SPECIFICATION TITLE .OF THE INVENTION: NONAQUEOUS ELECTROLYTE AND ELECTROCHEMICAL ELEMENT USING THE SAME TECHNICAL FIELD [0001] The present invention relates to a nonaqueous electrolytic solution capable of improving electrochemical characteristics, and to an electrochemical element using it. BACKGROUND ART [0002] " In recent years, electrochemical elements, especially lithium secondary batteries have been widely used as power supplies for electronic devices such as mobile telephones, notebook-size personal computers and the like, power supplies for electric vehicles, as well as for electric power storage, etc. These electronic devices and vehicles may be used in a broad temperature range, for example, at midsummer high temperatures or at frigid low temperatures, and are therefore required to be improved and well balanced in point of the cycle properties in a broad temperature range. The lithium secondary battery is mainly constituted of a positive electrode and a negative electrode containing a material capable of absorbing and releasing lithium, and a nonaqueous electrolytic solution containing a lithium salt and a nonaqueous solvent. For the nonaqueous solvent, used are carbonates such as ethylene carbonate (EC), propylene carbonate (PC), etc. As the negative electrode, known are metal lithium, and metal compounds (metal elemental substances, oxides, alloys with lithium, etc.) and carbon materials capable of absorbing and releasing lithium. In particular, a lithium secondary battery using a carbon material capable of absorbing and releasing lithium, such as coke, artificial graphite, natural graphite or the like, has been widely put into practical use. [0003] For example, it is known that, in a lithium secondary battery using a highly-crystalline carbon material such as natural graphite, artificial graphite or the like as the negative electrode material therein, the decomposed product or gas generated through reductive decomposition of the solvent in the nonaqueous electrolytic solution on the surface of the negative electrode during charging detracts from the electrochemical reaction favorable for the battery, therefore worsening the cycle properties of the battery. Deposition of the decomposed product of the nonaqueous solvent interferes with smooth absorption and release of lithium by the negative electrode, and therefore, in particular, the cycle properties at low temperatures may be thereby often worsened. In addition, it is known that a lithium secondary battery using a lithium metal or its alloy, or a metal elemental substance such as tin, silicon or the like or its metal oxide as the negative electrode material therein may have a high initial battery capacity but its battery performance such as battery capacity and cycle properties greatly worsens, since the micronized powdering of the material is promoted during cycles thereby bringing about accelerated reductive decomposition of the nonaqueous solvent, as compared with the negative electrode of a carbon material. In addition, the micronized powdering of the negative electrode material and the deposition of the decomposed product of the nonaqueous solvent may interfere with smooth absorption and release of lithium by the negative electrode, and therefore, in particular, the cycle properties at low temperatures may be thereby often worsened. On the other hand, it is known that, in a lithium secondary battery using, for example, LiCo02, LiMn204, LiNi02, LiFeP04 or the like as the positive electrode, when the nonaqueous solvent in the nonaqueous electrolytic solution is in the charged state, the decomposed product or the gas locally generated through partial oxidative decomposition in the interface between the positive electrode material and the nonaqueous electrolytic solution interferes with the electrochemical reaction favorable for the battery, and therefore the battery performance such as cycle properties at low temperatures and others are thereby also worsened. [0004] As in the above, the decomposed product and the gas generated through decomposition of the nonaqueous electrolytic solution on the positive electrode or the negative electrode may interfere with the movement of lithium ions or. may swell the battery, and the battery performance is thereby worsened. Despite the situation, electronic appliances equipped with lithium secondary batteries therein are offering more and more an increasing range of functions and are being in a stream of further increase in the power consumption. With that, the capacity of lithium secondary batteries is being much increased, and the space volume for the nonaqueous electrolytic solution in the battery is decreased by increasing the density of the electrode and by reducing the useless space volume in the battery. Accordingly, the situation is that even decomposition of only a small amount of the nonaqueous electrolytic solution may worsen the battery performance at low temperatures. Patent Reference 1 discloses a lithium ion secondary battery comprising a nonaqueous electrolytic solution that contains trimethylene glycol sulfite, saying that the battery is excellent in storage properties and cycle properties even at high temperatures. [0005] As a lithium primary battery, for example, known is one in which the positive electrode is formed of manganese dioxide or fluorographite and the negative electrode is formed of lithium metal, and the lithium primary battery of the type is widely used as having a high energy density, which, however, is desired to be improved in point of the low-temperature cycle properties. Recently, further, as a novel power source for electric vehicles or hybrid electric vehicles, electric storage devices have been developed, for example, an electric double layer capacitor using activated carbon or the like as the electrode from the viewpoint of the output density thereof, and a hybrid capacitor including a combination of the electric storage principle of a lithium ion secondary battery and that of an electric double layer capacitor (where both the capacity by lithium absorption and release and the electric double layer capacity are utilized) ; and it is desired to improve the low-temperature cycle properties of these capacitors. CITATION LIST PATENT REFERENCE [0006] Patent Reference 1: JP-A 2005-228721 SUMMARY OF THE INVENTION PROBLEMS THAT THE INVENTION IS TO SOLVE [0007] An object of the present invention is to provide a nonaqueous electrolytic solution capable of improving low-temperature cycle properties, and to provide an electrochemical element using the nonaqueous electrolytic solution. MEANS FOR SOLVING THE PROBLEMS [0008] The present inventors have investigated in detail the performance of the nonaqueous electrolytic solution in the above-mentioned Patent Reference 1. As a result, the nonaqueous electrolytic solution in Patent Reference 1 could not obtain a remarkable effect in point of low-temperature cycle properties. Given the situation, the present inventors have assiduously studied for the purpose of solving the above-mentioned problems, and have found that, when a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent contains at least two cyclic carbonates selected from ethylene carbonate, 1,2-butylene carbonate, a cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate, and a cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate, in which the content of the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate and/or the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate is from 1 to 40% by volume of the total volume of the nonaqueous solvent, and when the nonaqueous electrolytic solution contains trimethylene glycol sulfite in an amount of from 0.1 to 5% by mass, then the low-temperature cycle properties can be greatly improved, and have completed the present invention. Specifically, the present invention provides the following (1) and (2) : [0009] (1) A nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, in which the nonaqueous solvent contains at least two cyclic carbonates selected from ethylene carbonate, 1,2-butylene carbonate, a cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate, and a cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate, and the content of the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate and/or the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate is from 1 to 40% by volume of the total volume of the nonaqueous solvent, and which contains trimethylene glycol sulfite in an amount of from 0.1 to 5% by mass. [0010] (2) An electrochemical element comprising a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous solvent in the nonaqueous electrolytic solution contains at least two cyclic carbonates selected from ethylene carbonate, 1,2-butylene carbonate, a cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate, and a cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate, the content of the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate and/or the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate in the nonaqueous solvent is from 1 to 40% by volume of the total volume of the nonaqueous solvent, and the nonaqueous electrolytic solution contains trimethylene glycol sulfite in an amount of from 0.1 to 5% by mass. ADVANTAGE OF THE INVENTION [0011] According to the present invention, there are provided a nonaqueous electrolytic solution capable of improving low-temperature cycle properties, and an electrochemical element using the nonaqueous electrolytic solution. MODE FOR CARRYING OUT THE INVENTION [0012] . [Nonaqueous Electrolytic Solution] The nonaqueous electrolytic solution of the present invention comprises an electrolyte salt dissolved in a nonaqueous solvent, and nonaqueous solvent in the nonaqueous electrolytic solution contains at least two cyclic carbonates selected from ethylene carbonate, 1,2-butylene carbonate, a cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate, and a cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate, in which the content of the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate and/or the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate is from 1 to 40% by volume of the total volume . of the nonaqueous solvent, and the nonaqueous electrolytic solution contains trimethylene glycol sulfite in an amount of from 0.1 to 5% by mass. [0013] Though not always clear, the reason why the nonaqueous electrolytic solution of the present invention can greatly improve, low-temperate cycle properties may be considered as follows: In case where trimethylene glycol sulfite is added to a nonaqueous electrolytic solution where the nonaqueous solvent contains only one type of a cyclic carbonate, a surface film derived from trimethylene glycol sulfite and having low lithium ion conductivity is formed on the surface of the negative electrode. Consequently, there occurs a problem in that, when low-temperature cycles are repeated, then Li deposits on the surface of the negative electrode to lower the cycle properties. In the present invention, when trimethylene glycol sulfite' is added to an electrolytic solution in which the nonaqueous solvent contains the above-mentioned, at least two specific cyclic carbonates, then the decomposed products of at least two different cyclic carbonates could be taken in the surface film as the constituent elements therein, and therefore a surface film having high lithium ion conductivity could be formed. Of the above-mentioned cyclic carbonates, in case where cyclic carbonates having a specific structure with a .substituent of a methyl group or a fluorine atom as branched in the structure, such as the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate and/or the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate are contained in the electrolytic solution in an amount of from 1 to 40% by volume of the total volume of the nonaqueous solvent therein, then a surface film having especially high lithium ion conductivity could be formed, and it may be considered that a specific phenomenon of significantly improving low-temperature properties would occur. [0014] [Trimethylene Glycol Sulfite] Trimethylene glycol sulfite to be used in the nonaqueous electrolytic solution of the present invention is represented by the following formula (I): [0015] [Chemical Formula 1] [0016] The content of trimethylene glycol sulfite is from 0.1 to 5% by mass of the nonaqueous electrolytic solution. When the content is at most 5% by mass, then there would be little risk of forming any excessive surface film on the electrode to worsen low-temperature properties; and when at least 0.1% by mass', then the surface film formation would be sufficient to enhance the effect of bettering low-temperature cycle properties. The content is preferably at least 0.1% by mass of the nonaqueous electrolytic solution, more preferably at least 0.3% by mass; and the upper limit thereof is preferably at most 5% by mass, more preferably at most 3% by mass, even more preferably at most 1% by mass. Combining the nonaqueous solvent, the electrolyte salt and further other additives mentioned below exhibits a specific effect of synergistically improving low-temperature cycle properties. Though not always clear, it may be considered that a mixture surface film having a high ionic conductivity and comprising the constitutive elements derived from those nonaqueous solvent, electrolyte salt and further other additives could be formed. [0017] [Nonaqueous Solvent] The nonaqueous solvent for use in the nonaqueous electrolytic solution of the present invention contains at least the following cyclic carbonates. (Cyclic Carbonates) The nonaqueous solvent contains at least two cyclic carbonates selected from ethylene carbonate (EC), 1,2-butylene carbonate, a cyclic carbonate having a methyl group at least at 4 -position of ethylene carbonate, and a cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate. The cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate includes propylene carbonate PC), trans or cis-2,3-butylene carbonate, etc.; and from the viewpoint of improving low-temperature cycle properties, preferred are propylene carbonate and/or trans or cis-2,3-butylene carbonate. The cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate includes 4-fluoro-l,3-dioxolan-2-one, trans or cis-4,5-difluoro-l,3-dioxolan-2-one, etc.; and from the viewpoint of improving low-temperature cycle properties, preferred are 4-fluoro-1,3-dioxolan-2-one (FEC) and/or trans or cis-4, 5-difluoro-l,3-dioxolan-2-one (hereinafter the two are collectively called "DFEC"). [0018] The content of the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate and/or the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate is, from the viewpoint of improving low-temperature cycle properties, from 1 to 40% by volume of the total volume of the nonaqueous solvent, but is preferably from 5 to 36% by volume, more preferably from 10 to 33% by volume, even more preferably from 15 to 30% by volume. In case where the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate and the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate are combined here, the ratio by volume of the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate to the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate, (the cyclic carbonate having a methyl group at least at 4-position of ethylene carbonate)/(the cyclic carbonate having a fluorine atom at least at 4-position of ethylene carbonate) is preferably from 1/99 to 49/51, more preferably from 5/95 to 45/55, even more preferably from 10/90 to 40/60. [0019] From the viewpoint of improving low-temperature cycle properties, at least two of the above-mentioned cyclic carbonates are used as combined, and more preferably at least three are used. Preferred combinations of the cyclic carbonates include EC and PC; FEC and EC; FEC and PC; EC and PC and FEC; DFEC and EC; DFEC and PC; DFEC and FEC; FEC and PC and DFEC; FEC and EC and PC and DFEC, etc. Of those combinations, more preferred combinations are EC and PC; FEC and PC;. DFEC and PC; EC and FEC and PC, etc.; and even more preferred combinations are FEC and PC; EC and FEC and PC; FEC and PC and DFEC, etc. Not specifically defined, the content of the cyclic carbonates is preferably within a range of from 10 to 40% by volume of the total volume of the nonaqueous solvent. When the content is less than 10% by volume, then the electric conductivity of the nonaqueous electrolytic solution may lower, and low-temperature cycle properties may worsen; but when more than 40% by volume, then low-temperature cycle properties may worsen since the viscosity of the nonaqueous electrolytic solution may increase. Consequently, the content preferably falls within the above-mentioned range. [0020] [Other Nonaqueous Solvents] Other nonaqueous solvents than the above-mentioned cyclic carbonates and trimethylene glycol sulfite for use in the nonaqueous electrolytic solution of the present invention include linear esters, carbon-carbon double bond-containing cyclic carbonates, ethers, amides, phosphates, sulfones, lactones, nitriles, carboxylic acid anhydrides, aromatic compounds, other S=0 bond-containing compounds than trimethylene glycol, etc. [0021] (Linear Esters) The linear esters include asymmetric linear carbonates such as methyl ethyl carbonate (MEC), methyl propyl carbonate (MPC) , methyl isopropyl carbonate (MIPC) , methyl butyl carbonate, ethyl propyl carbonate, etc.; symmetric carbonates such as dimethyl carbonate (DMC), diethyl carbonate (DEC), dipropyl carbonate, dibutyl carbonate, etc.; linear carboxylates such as methyl propionate, ethyl propionate, methyl acetate, ethyl acetate, etc.; tertiary carboxylates such as methyl pivalate, butyl pivalate, hexyl pivalate, octyl pivalate, etc. Of those, preferably, the nonaqueous solvent contains a linear carbonate having a methyl group from the viewpoint of improving low-temperature cycle properties, more preferably at least one of DMC, MEC, MPC and MIPC, even more preferably at least one of DMC and MEC. Also preferably, the nonaqueous solvent contains an asymmetric linear carbonate, more preferably an asymmetric linear carbonate and a symmetric linear carbonate as combined. Preferably, the proportion of the asymmetric linear carbonate in the linear carbonate is at least 50% by volume. One type alone of these linear carbonates may be used here, but preferably two or more different types thereof are used as combined. Not specifically defined, the total content of the linear esters is preferably from 60 to 90% by volume of the total volume of the nonaqueous solvent. When the content is less than 60% by volume, then the viscosity of the electrolytic solution may increase; but when more than 90% by volume, then the electric conductivity of the electrolytic solution lay lower, and battery characteristics such as load characteristics may worsen. Consequently, the content preferably falls within the above-mentioned range. The ratio of the cyclic carbonate to the linear ester, cyclic carbonate/linear ester (ratio by volume) is preferably from 10/90 to 40/60, more preferably from 15/85 to 35/65, even more preferably from 20/80 to 30/70, from the viewpoint of improving low-temperature cycle properties. [0022] The carbon-carbon double bond-containing cyclic carbonates include vinylene carbonate (VC), vinylethylene carbonate (VEC), etc. The ethers include cyclic ethers such as tetrahydrofuran, 2-methyltetrahydrofuran, 1,3-dioxolan, 1,3-dioxane, 1,4-dioxane, etc.; linear ethers such as 1,2-dime thoxye thane, 1,2-diethoxyethane, 1,2-dibutoxyethane, etc.; the amides include dimethylformamide, etc.; the phosphates include trimethyl phosphate, tributyl phosphate, trioctyl phosphate, etc.; the sulfones include sulfolane, etc.; the lactones include y-butyrolactone, y-valerolactone, cc-angelicalactone, etc.; the nitriles include acetonitrile, propionitrile, succinonitrile, glutaronitrile, adiponitrile, pimelonitrile, etc.; the carboxylic anhydrides include linear carboxylic anhydrides such as acetic anhydride, propionic anhydride, etc.; cyclic carboxylic anhydrides such as succinic anhydride, maleic anhydride, glutaric anhydride, itaconic anhydride, etc. [0023] The aromatic compounds include aromatic compounds having a branched alkyl group, such as cyclohexylbenzene, fluorocyclohexylbenzene compounds (including 1 - f luoro-2 - cyclohexylbenzene, 1- f luoro- 3 -cyclohexylbenzene, and l-fluoro-4-cyclohexylbenzene) , tert-butylbenzene, tert-amylbenzene, an l-fluoro-4-tert-butylbenzene, etc.; and aromatic compounds such as biphenyl, terphenyls (o-, m-, and p-form), diphenyl ether, fluorobenzene, difluorobenzene (o-, m-, and p-form) , anisole, 2,4-difluoroanisole, and partially hydrogenated terphenyls (including 1,2-dicyclohexylbenzene, 2-phenylbicyclohexyl, 1,2-diphenylcyclohexane, and o-cyclohexylbiphenyl), etc. The other S=0 bond-containing compounds than trimethylene glycol sulfite include sultone compounds such as 1,3 -propanesultone, 1,3 -butanesultone, 1,4 -butanesultone, etc.; cyclic sulfite compounds such as ethylene sulfite, hexahydrobenzo [1,3,2] dioxathiolan-2-oxide (also referred to as 1,2-cyclohexanediol cyclic sulfite), 5-vinyl-hexahydro-l, 3,2-benzodioxathiol-2-oxide, etc.; sulfonic acid ester compounds such as 1,2-ethanediol dimethanesulfonate, 1,2-propanediol dimethanesulfonate, 1,3-propanediol dimethanesulfonate, 1,4-butanediol dimethanesulfonate, 1,5-pentanediol dimethanesulfonate, 2-propynyl methanesulfonate, etc.; and vinyl sulfone compounds such as di vinyl sulfone, 1,2-bis(vinylsulfonyl)ethane, bis(2-vinylsulfonylethyl) ether, etc. [0024] Of the above-mentioned other nonaqueous solvents, in particular, combined use of at least one selected from carbon-carbon double bond-containing cyclic carbonates and other S=0 bond-containing compounds than trimethylene glycol sulfite is preferred as enhancing the effect of improving low-temperature cycle properties. As the carbon-carbon double bond-containing cyclic carbonate, preferred is vinylene carbonate (VC); and as the other S=0 bond-containing compound than trimethylene glycol sulfite-, preferred are sulfonic acid ester compounds, and more preferred are sulfonic acid ester compounds having an unsaturated group such as a carbon-carbon triple bond or having an alkylene chain with at least 5 carbon atoms. Of those, especially preferred is at least one selected from vinylene carbonate, 2-propynyl methanesulfonate and 1,5-pentanediol dimethanesulfonate. When the amount of these compounds added is more than 5% by mass in the nonaqueous electrolytic solution, then it may worsen low-temperature cycle properties; and when less than 0.05% by mass, then it could not sufficiently attain the effect of improving low-temperature cycle characteristics. Accordingly, the content is preferably at least 0.05% by mass in the nonaqueous electrolytic solution, more preferably at least 0.5% by mass; and the upper limit thereof is preferably at most 5% by mass, more preferably at most 3% by mass. [0025] . [Electrolyte Salt] As the electrolyte salt for use in the present invention, preferably mentioned are the following lithium salts and onium salts. (Lithium Salt) As the lithium salt, there are mentioned inorganic lithium salts such as LiPF6, LiBF4, LiC104, etc.; linear fluoroalkyl group-having lithium salts such as LiN(S02CF3)2, LiN(S02C2F5)2, LiCF3S03, LiC (S02CF3) 3, LiPF4(CF3)2, LiPF3 (C2F5)3, LiPF3(CF3)3, LiPF3(iso-C3F7)3/ LiPFs (iso-C3F7) , etc.; cyclic fluoroalkylene chain-having lithium salts such as (CF2)2(S02)2NLi, (CF2)3 (S02)2NLi, etc.; and lithium salts with an oxalate complex as the anion therein, such as lithium bis[oxalate-0,01]borate, lithium difluoro[oxalate-0,0']borate, etc. One alone or two or more different types of these electrolyte salts may be used here either singly or as combined. Of those, especially preferred electrolyte salts are LiPF6, LiBF4, LiN(S02CF3)2 and LiN(S02C2F5)2; and more preferred is combined use of LiPF6 and at least one selected from LiBF4, LiN(S02CF3)2 and LiN(S02C2F5)2. Preferably, the ratio (by mol) of LiPF6/[LiBF4 or LiN(S02CF3)2 or LiN(S02C2Fs) 2] falls within a range of from 70/30 to 99/1, more preferably within a range of from 80/20 to 98/2. [0026] (Onium Salt) As the onium salt, preferably mentioned are various salts of a combination of an onium cation and an anion mentioned below. Preferred examples of the onium cation include a tetramethylammonium cation, an ethylt rime thy lammonium cation, a diethyldimethylammonium cation, a triethylmethylammonium cation, a tetraethylammonium cation, an N,N-dimethylpyrrolidinium cation, an N-ethyl-N-methylpyrrolidinium cation, an N,N-dietbylpyrrolidinium cation, a spiro-(N,N')-bipyrrolidinium cation,an N,N'-dimethylimidazolinium cation, an N-ethyl-N1-methylimidazolinium cation, an N,N' -diethylimidazolinium cation, an N,N'-dimethylimidazoli um cation, an N-ethyl-N'-methylimidazolium cation, an N,N'-diethylimidazolium cation, etc. Preferred examples of the anion include a PF6 anion, a BF4 anion, a C104 anion, an AsF6 anion, a CF3SO3 anion, an N(CF3S02)2 anion, an N(C2F5S02)2 anion, etc. [0027] The concentration of all these electrolyte salts as dissolved in the solution is generally preferably at least 0.3 M relative to the above-mentioned nonaqueous solvent, more preferably at least 0.5 M, even more preferably at least 0.7 M. The upper limit of the concentration is preferably at most 2.5 M, more preferably at most 2.0 M, even more preferably at most 1.5 M. [0028] [Production of Nonaqueous Electrolytic Solution] The nonaqueous electrolytic solution of the present invention can be prepared, for example, by: mixing the nonaqueous solvents; adding the electrolyte salt to the mixture; and further dissolving therein trimethylene glycol sulfite in an amount of from 0.1 to 5% by mass. In this case, the nonaqueous solvent to be used, and the compound to be added to the electrolytic solution are preferably previously purified within a range not significantly detracting from the producibility, in which, therefore, the impurity content is preferably as low as possible. [0029] [Electrochemical Element] The electrochemical element of the present invention comprises a positive electrode, a negative electrode and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, and is characterized in that the nonaqueous electrolytic solution is the above-mentioned nonaqueous electrolytic solution of the present invention. The electrochemical element includes the following first to fourth electrochemical elements. As the nonaqueous electrolyte, usable here is not only a liquid one but also a gelled one. Further, the nonaqueous electrolytic solution of the present invention can also be used for solid polymer electrolytes. Above all, the solution is preferably used for the first electrochemical element (that is, for lithium batteries) or the fourth electrochemical element, (that is, for lithium ion capacitors), using a lithium salt as the electrolyte salt, more preferably for lithium batteries, and most preferably for lithium secondary batteries. [0030] [The First Electrochemical Element (lithium battery)] The lithium battery of the present invention collectively means a lithium primary battery and a lithium secondary battery. The lithium battery of the present invention comprises a positive electrode, a negative electrode and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent. The other constitutive components such as the positive electrode and the negative electrode except for the nonaqueous electrolytic solution can be used with no particular limitation. (Lithium Secondary Battery) As the positive electrode active material for the lithium secondary battery, usable is a complex metal oxide with lithium that contains at least one of cobalt, manganese and nickel. One kind of these positive electrode active materials can be used alone, or two or more kinds of them can be used in combination. The lithium complex metal oxide includes, for example, LiCo02, LiMn204, LiNi02, LiCOi-xNix02 (0.01