JPH0426075A - Organicelectrolyte battery - Google Patents
Organicelectrolyte batteryInfo
- Publication number
- JPH0426075A JPH0426075A JP2131685A JP13168590A JPH0426075A JP H0426075 A JPH0426075 A JP H0426075A JP 2131685 A JP2131685 A JP 2131685A JP 13168590 A JP13168590 A JP 13168590A JP H0426075 A JPH0426075 A JP H0426075A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- potential
- electrolyte
- acetonitrile
- negative electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000005486 organic electrolyte Substances 0.000 title claims description 18
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003792 electrolyte Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 8
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052744 lithium Inorganic materials 0.000 abstract description 9
- 238000000354 decomposition reaction Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000002542 deteriorative effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000007774 positive electrode material Substances 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910032387 LiCoO2 Inorganic materials 0.000 description 2
- 229910003005 LiNiO2 Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- DZKDPOPGYFUOGI-UHFFFAOYSA-N tungsten(iv) oxide Chemical compound O=[W]=O DZKDPOPGYFUOGI-UHFFFAOYSA-N 0.000 description 2
- 229910017048 AsF6 Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910010584 LiFeO2 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910003092 TiS2 Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910001540 lithium hexafluoroarsenate(V) Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、有機電解液電池に関する。[Detailed description of the invention] Industrial applications The present invention relates to an organic electrolyte battery.
従来の技術
有機電解ン夜電池は、水溶液系電池に比較して高電圧、
高エネルギー密度か得られる点て優れている。しかし、
有機電解ｉ夜は、導電率か著しく低いのて、有機電解液
電池の高率放電特性は水溶液系電池に比較してきわめて
劣りでいる。Conventional technology Organic electrolyte batteries have higher voltage and lower voltage than aqueous batteries.
It is excellent in that it can provide high energy density. but,
Since the conductivity of organic electrolyte batteries is extremely low, the high rate discharge characteristics of organic electrolyte batteries are extremely inferior to those of aqueous batteries.
有機電解液電池の電解液としては、プロピレンカーボネ
ートもしくはエチレンカーホネーｌ−または両者を混合
したものに、電解質としてＬ＋Ｃｌ０ｎ。The electrolyte for the organic electrolyte battery is propylene carbonate or ethylene carbonate L- or a mixture of both, and L+Cl0n as the electrolyte.
ＬｉＡｓＦ６．Ｌｉ ＢＦ４．ＬｉＰＦ６もしくはＬｉ
ＣＦ３ＣＯ３またはそれらの混合物を加えたものが代表
的である。LiAsF6. Li BF4. LiPF6 or Li
Typical examples include the addition of CF3CO3 or mixtures thereof.
プロピレンカーボネートおよびエチレンカーボネートは
、比較的誘電率が高いので、これらを用いた電解液の導
電率は比較的高い。しかし、有機電解液電池は、高率放
電性能の改善がつねに求められているので、この電解液
も導電率をさらに向上することが強く望まれている。Since propylene carbonate and ethylene carbonate have relatively high dielectric constants, electrolytes using them have relatively high conductivity. However, since organic electrolyte batteries are constantly required to improve their high rate discharge performance, it is strongly desired that this electrolyte also have further improved conductivity.
発明が解決しようとする課題
従来、有機電解液の導電率を向上させるために、ジメＩ
・キシエタン（以下ではＤＭＥと表記する）を添加する
方法か一般に用いられできた。しかし、開Ｅには次のよ
うな問題があった。すなわち、近年３．５Ｖ ｖｓ、
Ｌｉ／い゛以上のきわめて責な電位を示すＬｉＣｏＯ２
，ＬｉＮｉＯ２，ＬｉＦｅＯ２またはカーボン電極なと
の正極が用いられるようになってきたが、このような高
電位の正極を用いた場合には、ＤＭＥが電池内で酸化分
解されてしまい電池特性が急激に劣化するという問題が
あった。Problems to be Solved by the Invention Conventionally, in order to improve the conductivity of an organic electrolyte,
- A method of adding xyethane (hereinafter referred to as DME) was commonly used. However, KaiE had the following problems. That is, in recent years 3.5V vs.
LiCoO2 exhibits an extremely negative potential higher than Li/゛
, LiNiO2, LiFeO2, or carbon electrodes have come to be used, but when such high-potential positive electrodes are used, DME is oxidized and decomposed within the battery, causing a rapid deterioration of battery characteristics. There was a problem with deterioration.
したがって、高電位な正極活物質を備えた有機電解液電
池は、高率放電性能の改善が非常に難しいという課題が
あ′つた。Therefore, organic electrolyte batteries equipped with high-potential positive electrode active materials have a problem in that it is extremely difficult to improve high-rate discharge performance.
ｙ、Ｍを解決するための手段
本発明は、電位が０．２Ｖ ｖｓ、い／い゛よりも貴で
あるような負極板を備え、プロピレンカーボネートもし
くはエチレンカーボネートの単体または両者の混合物に
アセトニトリルを混合してなる有機溶媒を電解液として
備えたことを特徴とする有機電解液電池を用いて前記課
題を解決するものである。Means for Solving y, M The present invention is equipped with a negative electrode plate whose potential is nobler than 0.2 V vs. The above-mentioned problem is solved by using an organic electrolyte battery characterized by having a mixed organic solvent as an electrolyte.
作用
発明者は、ＤＭＥと同様の低粘度溶媒であって、しかも
ＤＭＥよりも酸化電位が責な有機溶媒について検討した
結果、後述のようにアセトニトリル（以下ではＡＮと表
記する）が有用であることを見いだした。As a result of studying organic solvents that are low viscosity solvents similar to DME, but with a higher oxidation potential than DME, the inventor found that acetonitrile (hereinafter referred to as AN) is useful as described below. I found it.
ＡＮあるいはＤＭＥを添加した場合の酸化電位の変化を
表１に示す。表中ＰＣはプロピレンカーボネート、ＥＣ
はエチレンカーボネートを示す。ＤＭＥを添加した場合
には酸化電位が著しく卑に移行したが、ＡＮを添加した
場合には酸化電位の低下がほとんと無かった。すなわち
、靜の添加は、電解液の耐酸化性能の劣化を招かないこ
とがわかった。Table 1 shows the change in oxidation potential when AN or DME is added. PC in the table is propylene carbonate, EC
indicates ethylene carbonate. When DME was added, the oxidation potential became significantly less noble, but when AN was added, there was almost no decrease in the oxidation potential. In other words, it was found that the addition of hydroxide did not cause deterioration of the oxidation resistance of the electrolyte.
表１ 酸化電位（ｖｓ、Ｌ ／Ｌ ゛） つぎに、これらの電解液の導電率を表２に示す。Table 1 Oxidation potential (vs, L /L ゛) Next, Table 2 shows the electrical conductivity of these electrolytes.
ＡＮまたはＤＭＥを添加した場合には導電率が向上した
。The conductivity was improved when AN or DME was added.
しかし、ＤＭＥを添加した場合には前記のように耐酸化
性能が低下するので望ましくない。However, when DME is added, the oxidation resistance decreases as described above, which is not desirable.
以上のようにＡＮの添加は、電解液の耐酸化性能を劣化
させずに導電率を向上できる点て優れている。As described above, the addition of AN is excellent in that it can improve the electrical conductivity without deteriorating the oxidation resistance of the electrolytic solution.
表２
導電率（２０℃）
しかし、ＡＮには次のような欠点がある。すなわち、従
来の有機電解液電池は、通常金属リチウム負極を用いて
いる。ＡＮは、この金属リチウム負極と容易に反応（還
元分解）する。このため、従来の有機電解液電池では、
ＡＮは、はとんど用いられていなかった。Table 2 Electrical conductivity (20°C) However, AN has the following drawbacks. That is, conventional organic electrolyte batteries typically use a metallic lithium negative electrode. AN easily reacts (reductively decomposes) with this metallic lithium negative electrode. Therefore, in conventional organic electrolyte batteries,
AN was rarely used.
発明者は、ＡＮの還元電位について詳しく検討した結果
、０．２Ｖ ｖｓ、Ｌｉ／Ｌｉ”以上の電位領域では、
ＡＮの還元分解が起こりにくいことを見いたした。As a result of a detailed study on the reduction potential of AN, the inventor found that in a potential region of 0.2V vs. Li/Li'' or higher,
It was found that reductive decomposition of AN is difficult to occur.
よって、本発明では、平衡電位および作動電位が金属リ
チウムよりも０．２Ｖ以上貴であるような負極板を備え
ることによって、ＡＮの還元分解が起こらないようにし
た。そして、電解液にＡＮを添加して、高電位の正極活
物質を備えた有機電解液電池の高率放電性能の改良を可
能にした。Therefore, in the present invention, reductive decomposition of AN is prevented by providing a negative electrode plate whose equilibrium potential and operating potential are 0.2 V or more nobler than metal lithium. By adding AN to the electrolyte, it was possible to improve the high-rate discharge performance of an organic electrolyte battery equipped with a high-potential positive electrode active material.
実施例 以下、本発明を好適な実施例を用いて説明する。Example The present invention will be explained below using preferred embodiments.
正極活物質にｌ ｉ ＣｏＯ２を用い、負極活物質にア
ルミニウム合金を用いて、第一図に示した内部構造を有
するボタン型有機電解湾電池をつきのように試作した。A button-type organic electrolytic bay battery having the internal structure shown in FIG. 1 was experimentally produced using l i CoO2 as the positive electrode active material and an aluminum alloy as the negative electrode active material.
９０ｗｔχの［月ＣｏＯ２，８ｗｔ４のアセチレンフ゛
ラックおよび２ｗｔ％のポリテトラフルオロエチレン（
ＰＴＦＥ）を混合して正極合剤とした。そして、この正
極合剤を０．６５ｇ採集して、３２５ｍｅｓｈのステン
レス（ＳＬＩＳ３１６）製金網に包み込んで、径が１２
闘で厚さが２．１ｍｍの正極板ベレット（１）を試作し
た。この正極板ペレッＩ・の放電容量は、０．５モルの
リチウムが吸蔵放出されるとした場合に８０ｍＡｈであ
る。90 wt% of CoO2, 8 wt4 of acetylene flake and 2 wt% of polytetrafluoroethylene (
PTFE) to form a positive electrode mixture. Then, 0.65g of this positive electrode mixture was collected and wrapped in a 325mesh stainless steel (SLIS316) wire gauze with a diameter of 12.
In this effort, we produced a prototype positive electrode plate pellet (1) with a thickness of 2.1 mm. The discharge capacity of this positive electrode plate pellet I is 80 mAh when 0.5 mole of lithium is intercalated and released.
ＡＩ（９ｉｗｔ＄）−Ｌｉ（２ｗｔＸ）−５ｉ（５ｗ、
ｔ％）−Ｍｎ（１ｗｔ％）−Ｇａ（１ｗｔ２：）合金を
カスアトマイス法によって平均粒径が２０ミクロンの粉
末に加工した。そして、このアルミニウム合金粉末を０
．３ｇ採集して、＋８０ｍｅｓｈのニッケル金網に包み
込んで径が１０ｍｍで厚さカ月、 ９ｍｍの負極板ベレ
ッ１−（２）を試作した。なお、このアルミニウム合金
の電位は、リチウムよりも約０．３Ｖ責である。したが
フて、ＡＮは負極において還元分解されない。AI(9iwt$)-Li(2wtX)-5i(5w,
t%)-Mn(1wt%)-Ga(1wt2:) alloy was processed into powder with an average particle size of 20 microns by the Kastomys method. Then, this aluminum alloy powder was
．． 3g was collected and wrapped in a +80mesh nickel wire mesh to make a prototype negative electrode plate Veret 1-(2) with a diameter of 10mm and a thickness of 9mm. Note that the potential of this aluminum alloy is about 0.3 V lower than that of lithium. Therefore, AN is not reductively decomposed at the negative electrode.
葉脈状の無孔部と、孔が３次元的に配列した有孔部とを
有する平均厚さが２３ミクロンのポリエチレン製微孔膜
（三菱化成株式会社エクセボールＥ）を直径１４ｍｍに
打ち抜いて微孔性セパレーター（３）を試作した。また
、ポリプロピレンの不織布を１２ｍｍに打ち抜いて平均
厚さが０．２闘の不織布セパレーター（４）を試作した
。A polyethylene microporous membrane with an average thickness of 23 microns (Exeball E, Mitsubishi Kasei Corporation), which has a leaf-like non-porous part and a perforated part with three-dimensionally arranged pores, was punched out to a diameter of 14 mm. A porous separator (3) was prototyped. In addition, a nonwoven fabric separator (4) having an average thickness of 0.2mm was prototyped by punching out a polypropylene nonwoven fabric to a size of 12 mm.
これらの電池構成部品に後述の電解液を真空含浸したの
ち、第１図のように積層して、耐蝕性ステンレス鋼板製
の正極缶（５）、負極缶（６）およびポリプロピレン類
の絶縁力スケット（７）からなる電池ケースに収納して
径が１５．４ｍｍで厚さが５闘のボタン型有機電解液電
池を試作した。After vacuum impregnating these battery components with the electrolytic solution described below, they are laminated as shown in Figure 1 to form a positive electrode can (5), a negative electrode can (6) made of corrosion-resistant stainless steel plates, and an insulating capacity socket made of polypropylene. (7) A button-type organic electrolyte battery with a diameter of 15.4 mm and a thickness of 5mm was housed in a battery case made of (7).
電解液として、１．５Ｍ ＬｉＣｌ０．／ＰＣ＋ＥＣ＋
ＡＮ（’１：１：２）を用いた有機電解液電池を本発明
の実施例による電池１とする。As electrolyte, 1.5M LiCl0. /PC+EC+
An organic electrolyte battery using AN ('1:1:2) is referred to as a battery 1 according to an embodiment of the present invention.
本例では電解質にＬｉＣｌ０．を用いているが、表２に
示したようにいＡｓＦ６を用いた方が、導電率がより高
い。しかし、ヒ素系の電解液は、毒性が強いので実用は
難しいとされている。In this example, the electrolyte is LiCl0. However, as shown in Table 2, the conductivity is higher when AsF6 is used. However, arsenic-based electrolytes are considered difficult to put into practical use because of their strong toxicity.
また、電解液に１．５Ｍ ＬｉＣｌ０ａ／ＰＣ＋ＥＣ（
］：１）を用いた電池を比較のための電池Ａとする。そ
して、電解液に１．５Ｍ ＬｉＣｌＯ４／ＰＣ＋ＥＣ＋
ＤＭＥ（１：１：２）を用いた電池を比較のための電池
Ｂとする。さらに、負極板に径が１０ｍｍで厚さが２ｍ
ｍの金属リチウムを用いた以外は、本発明による電池１
と同じ電池を比較のための電池Ｃとする。これらの電池
の放電容量の放電電流依存性を検討した。In addition, 1.5M LiCl0a/PC+EC (
]: A battery using 1) is designated as battery A for comparison. Then, 1.5M LiClO4/PC+EC+ was added to the electrolyte.
A battery using DME (1:1:2) is designated as Battery B for comparison. Furthermore, the diameter of the negative electrode plate is 10 mm and the thickness is 2 m.
Battery 1 according to the invention, except that m metallic lithium was used.
The same battery is designated as battery C for comparison. We investigated the discharge current dependence of the discharge capacity of these batteries.
その結果を第２図に示す。図から明かなように、本発明
による電池１および比較のための電池Ｂおよび電池Ｃは
、電池Ａに比較して高率放電時の容量が多い。すなわち
、ＡＮまたはＤＭＥの添加によって電池の高率放電性能
が改善された。The results are shown in FIG. As is clear from the figure, battery 1 according to the present invention and batteries B and C for comparison have a higher capacity at high rate discharge than battery A. That is, the addition of AN or DME improved the high rate discharge performance of the battery.
つぎに、上記の電池を０．０．０．１００％の充放電サ
イクル試験にかけた。放電容量のサイクルの進行にとも
なう変化を第３図に示す。図から明らかなように、電池
Ｂおよび電池Ｃは、サイクル寿命が実施例のｆ；（！ｉ
１または比較のための電池Ａに比較して著しく短い。高
電位の正極板を用いてＤＭＥを添加した場合には、ＤＭ
Ｅが酸化分解されることに起因して容量の低下が起こり
、ＡＩＪを添加して金属リチウム負極板を用いた場合に
は、Ａ Ｎ ｂ’ｌ還元分解されることに起因して容量
低下が起きたものと考えられる。Next, the above battery was subjected to a 0.0.0.100% charge/discharge cycle test. FIG. 3 shows the change in discharge capacity as the cycle progresses. As is clear from the figure, battery B and battery C have a cycle life of f;(!i
1 or significantly shorter than battery A for comparison. When DME is added using a high potential positive electrode plate, DM
A decrease in capacity occurs due to the oxidative decomposition of E, and when using a metal lithium negative electrode plate with the addition of AIJ, a decrease in capacity occurs due to the reductive decomposition of A Nb'l. This is considered to have happened.
以上の結果から、電１１２が０．２Ｖ ｖｓ−Ｌｉ／Ｌ
ｉ＋よりも貴であるような負極板を用いて、ブロビレン
カーホネートもしくはエチレンカーボネートの単体また
は両者の混合物に、アセトニトリルを混合してなる有機
溶媒を用いたことを特徴とする本発明の有機電解液電池
は、高率放電性能およびサイクル寿命性能か著しく優れ
ていることがわかる。From the above results, the voltage 112 is 0.2V vs-Li/L
The organic solvent of the present invention is characterized in that it uses a negative electrode plate that is more noble than i+, and uses an organic solvent prepared by mixing acetonitrile with brobylene carbonate or ethylene carbonate alone or a mixture of both. It can be seen that the electrolyte battery has significantly superior high rate discharge performance and cycle life performance.
なお、本発明では、負極としてリチウムよりも０．２Ｖ
以上責な電位を有する電極を用いるか、この負極として
は、実施例のようにアルミニウム合金負極を用いても良
いし、たとえは、カーボン負極、鉛負極、二酸化タング
ステン負極などを用いても良い。また、本発明の実施例
では、正極活物質にＬｉＣｏＯ２を用いているが、Ｌ
ｉ ＣｏＯ２と同様に３．５Ｖ ｖｓ。In addition, in the present invention, the negative electrode is 0.2V lower than lithium.
An electrode having the above-mentioned negative potential may be used, or an aluminum alloy negative electrode may be used as in the embodiment, or a carbon negative electrode, a lead negative electrode, a tungsten dioxide negative electrode, etc. may be used as the negative electrode. In addition, in the examples of the present invention, LiCoO2 is used as the positive electrode active material, but L
i Similar to CoO2, 3.5V vs.
Ｌｉ／Ｌｉ”以上の高電位を示すＬｉＮｉＯ２，ＬｉＮ
ｉ、、Ｃｏ、０２゜Ｌ ｉ ＦｅＯ２またはカーボン正
極板を用いても良い。もちろん、ＭｎＯ２、Ｖ２Ｏ５、
ＴｉＳ２なとの比較的低電位の正極活物質を用いても良
い。しかし、本発明が最も効果的なのは、ＤＭＥを用い
ることができないような高電位の正極活物質を備えた有
機電解液電池の場合である。LiNiO2, LiN which exhibits a high potential higher than “Li/Li”
i,, Co, 02°L i FeO2 or a carbon positive electrode plate may be used. Of course, MnO2, V2O5,
A relatively low potential positive electrode active material such as TiS2 may also be used. However, the present invention is most effective in the case of organic electrolyte batteries with positive electrode active materials of such high potential that DME cannot be used.
発明の効果
本発明は、有機電解液電池の高率放電性能を著しく向上
できるものであり、その工業的価値はきわめて大である
。Effects of the Invention The present invention can significantly improve the high rate discharge performance of organic electrolyte batteries, and its industrial value is extremely large.
第１図は、本発明の実施例の電池の内部構造の概略図で
ある。第２図は、本発明の電池と従来の電池との高率放
電性能を比較した図である。第３図は、
本発明の電池と従来の電池とのサイクツＬ／寿命性能を
比較した図である。
察
図
兎
方丈
忙
像
ン膚ｔ
（側Ａ）
賽
Σ
ヅイフル数
（〜）FIG. 1 is a schematic diagram of the internal structure of a battery according to an embodiment of the present invention. FIG. 2 is a diagram comparing the high rate discharge performance of the battery of the present invention and a conventional battery. FIG. 3 is a diagram comparing the cycle length/life performance of the battery of the present invention and a conventional battery. The number of zuiful (～)
Claims (1)
ような負極板を備え、プロピレンカーボネートもしくは
エチレンカーボネートの単体または両者の混合物にアセ
トニトリルを混合してなる有機溶媒を電解液として備え
たことを特徴とする有機電解液電池。The potential is 0.2V vs. An organic electrolyte comprising a negative electrode plate which is more noble than Li/Li^+, and an organic solvent made by mixing acetonitrile with propylene carbonate or ethylene carbonate alone or a mixture of both as an electrolyte. liquid battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13168590A JP3239267B2 (en) | 1990-05-21 | 1990-05-21 | Organic electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13168590A JP3239267B2 (en) | 1990-05-21 | 1990-05-21 | Organic electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0426075A true JPH0426075A (en) | 1992-01-29 |
| JP3239267B2 JP3239267B2 (en) | 2001-12-17 |
Family
ID=15063826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13168590A Expired - Lifetime JP3239267B2 (en) | 1990-05-21 | 1990-05-21 | Organic electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3239267B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1488435A1 (en) * | 2002-03-19 | 2004-12-22 | Energy Storage Systems Pty, Ltd. | An electrolyte for an energy storage device |
| CN1311585C (en) * | 2003-08-20 | 2007-04-18 | 三星Sdi株式会社 | Electrolyte for rechargeable lithium battery and rechargeable lithium battery comprising same |
| US8067120B2 (en) | 2006-03-24 | 2011-11-29 | Panasonic Corporation | Non-aqueous electrolyte secondary battery |
| US8576541B2 (en) | 2010-10-04 | 2013-11-05 | Corning Incorporated | Electrolyte system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101438450A (en) * | 2006-05-18 | 2009-05-20 | 中信国安盟固利新能源科技有限公司 | High output power type lithium ion battery with middle and small capacity |
| WO2012057311A1 (en) | 2010-10-29 | 2012-05-03 | 旭化成イーマテリアルズ株式会社 | Nonaqueous electrolyte and nonaqueous secondary battery |
| WO2013062056A1 (en) | 2011-10-28 | 2013-05-02 | 旭化成株式会社 | Non-aqueous secondary battery |
-
1990
- 1990-05-21 JP JP13168590A patent/JP3239267B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1488435A1 (en) * | 2002-03-19 | 2004-12-22 | Energy Storage Systems Pty, Ltd. | An electrolyte for an energy storage device |
| US7314514B2 (en) * | 2002-03-19 | 2008-01-01 | Cap-Xx Limited | Electrolyte for an energy storage device |
| EP1488435A4 (en) * | 2002-03-19 | 2008-03-26 | Cap Xx Ltd | An electrolyte for an energy storage device |
| CN1311585C (en) * | 2003-08-20 | 2007-04-18 | 三星Sdi株式会社 | Electrolyte for rechargeable lithium battery and rechargeable lithium battery comprising same |
| US8067120B2 (en) | 2006-03-24 | 2011-11-29 | Panasonic Corporation | Non-aqueous electrolyte secondary battery |
| US8576541B2 (en) | 2010-10-04 | 2013-11-05 | Corning Incorporated | Electrolyte system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3239267B2 (en) | 2001-12-17 |
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