JP3311611B2 - Lithium secondary battery - Google Patents
Lithium secondary batteryInfo
- Publication number
- JP3311611B2 JP3311611B2 JP28926696A JP28926696A JP3311611B2 JP 3311611 B2 JP3311611 B2 JP 3311611B2 JP 28926696 A JP28926696 A JP 28926696A JP 28926696 A JP28926696 A JP 28926696A JP 3311611 B2 JP3311611 B2 JP 3311611B2
- Authority
- JP
- Japan
- Prior art keywords
- carbonate
- lithium
- secondary battery
- solvent
- acid ester
- 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.)
- Expired - Fee Related
Links
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
Landscapes
- Secondary Cells (AREA)
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、リチウム二次電池
に係わり、詳しくは充放電効率が極めて高いリチウム二
次電池を得ることを目的とした、電解液の溶媒の改良に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lithium secondary battery, and more particularly to an improvement in a solvent for an electrolytic solution for obtaining a lithium secondary battery having extremely high charge / discharge efficiency.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】近年、
電解液の溶媒として有機溶媒を使用するリチウム二次電
池が、従前のアルカリ二次電池に比べて、高電圧化乃至
高容量化が可能であることから注目されている。アルカ
リ電解液を使用しないリチウム二次電池の場合は、電池
設計をする際に水の分解電圧を考慮する必要が無いから
である。2. Description of the Related Art In recent years,
BACKGROUND ART A lithium secondary battery using an organic solvent as a solvent for an electrolytic solution has attracted attention because it can achieve higher voltage and higher capacity than conventional alkaline secondary batteries. This is because in the case of a lithium secondary battery that does not use an alkaline electrolyte, it is not necessary to consider the decomposition voltage of water when designing the battery.
【０００３】リチウム二次電池の負極材料には、金属リ
チウム、リチウム合金、黒鉛、コークスなどが使用され
るが、リチウムと有機溶媒とが反応して、リチウムイオ
ン導電性の良くない被膜が負極の表面に形成されるた
め、充放電効率（充電電気量に対する放電電気量の比
率）が良くないという問題がある。As a negative electrode material of a lithium secondary battery, metallic lithium, lithium alloy, graphite, coke, and the like are used, and a film having poor lithium ion conductivity is formed by a reaction between lithium and an organic solvent. Since it is formed on the surface, there is a problem that the charge / discharge efficiency (the ratio of the amount of discharged electricity to the amount of charged electricity) is not good.
【０００４】リチウム二次電池の充放電効率を改善する
ために、電解液の溶媒として、γ−ブチロラクトン（γ
−ＢＬ）の３位又は４位の水素を塩素又はフッ素で置換
した塩素化又はフッ素化γ−ブチロラクトンを使用する
ことが提案されている（特開昭６２−２９００７３号公
報参照）。同公報によれば、塩素化又はフッ素化により
ラクトン環のＣ−Ｏ結合が切れにくくなるため溶媒が安
定化し、その結果充放電効率が改善されるとのことであ
る。In order to improve the charging and discharging efficiency of a lithium secondary battery, γ-butyrolactone (γ
It has been proposed to use chlorinated or fluorinated γ-butyrolactone in which the hydrogen at the 3- or 4-position of —BL) has been replaced with chlorine or fluorine (see Japanese Patent Application Laid-Open No. 62-290073). According to the gazette, chlorination or fluorination makes it difficult to break the C—O bond of the lactone ring, so that the solvent is stabilized, and as a result, the charge / discharge efficiency is improved.
【０００５】しかしながら、リチウム二次電池の充放電
効率は、リチウムと有機溶媒との反応により負極の表面
に形成される被膜のリチウムイオン導電性の良否による
ところが大きいため、上記従来の技術では、充放電効率
が極めて高いリチウム二次電池を得ることは困難であ
る。However, the charge / discharge efficiency of a lithium secondary battery largely depends on the quality of lithium ion conductivity of a film formed on the surface of a negative electrode due to the reaction between lithium and an organic solvent. It is difficult to obtain a lithium secondary battery having extremely high discharge efficiency.
【０００６】本発明は、以上の事情に鑑みてなされたも
のであって、リチウムイオン導電性の良い被膜を形成す
る有機溶媒を使用した、充放電効率が極めて高いリチウ
ム二次電池を提供することを目的とする。The present invention has been made in view of the above circumstances, and provides a lithium secondary battery having an extremely high charge / discharge efficiency using an organic solvent which forms a film having good lithium ion conductivity. With the goal.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
の本発明に係るリチウム二次電池（本発明電池）は、Ｃ
Ｈ3 ＣＯＯＣＦ3 、ＣＦ3 ＣＯＯＣＦ3 、ＣＦ3 ＣＯＯ
ＣＨ2 ＣＦ3 、ＣＦ3ＣＨ2 ＣＯＯＣＦ3 及びＣＦ3 Ｃ
ＯＯＣＨ2 ＣＦ3 よりなる群から選ばれた少なくとも１
種のフッ化カルボン酸エステルのみからなる溶媒、又
は、前記少なくとも１種のフッ化カルボン酸エステル
と、エチレンカーボネート、プロピレンカーボネート、
ブチレンカーボネート、ジメチルカーボネート、エチル
メチルカーボネート及びジエチルカーボネートよりなる
群から選ばれた少なくとも１種の炭酸エステルとからな
り、前記少なくとも１種のフッ化カルボン酸エステルを
５０体積％以上含有する混合溶媒を、電解液の溶媒とし
て使用したものである。The lithium secondary battery (battery of the present invention) according to the present invention for achieving the above object has the following features.
H 3 COOCF 3 , CF 3 COOCF 3 , CF 3 COO
CH 2 CF 3 , CF 3 CH 2 COOCF 3 and CF 3 C
At least one selected from the group consisting of OOCH 2 CF 3
A solvent consisting of only one kind of fluorinated carboxylic acid ester, or the at least one kind of fluorinated carboxylic acid ester, ethylene carbonate, propylene carbonate,
A mixed solvent comprising at least one carbonate ester selected from the group consisting of butylene carbonate, dimethyl carbonate, ethyl methyl carbonate and diethyl carbonate, and containing at least one fluorocarboxylic acid ester in an amount of 50% by volume or more; It was used as a solvent for the electrolytic solution.
【０００８】上記フッ化カルボン酸エステルを上記炭酸
エステルとの混合溶媒の形態で使用する場合は、上記フ
ッ化カルボン酸エステルの一種又は二種以上を５０体積
％以上含む混合溶媒を使用する必要がある。上記フッ化
カルボン酸エステルの含有比率が５０体積％未満の場合
は、負極の表面に形成される被膜のリチウムイオン導電
性が充分でないため、充放電効率が極めて高いリチウム
二次電池を得ることが困難になるからである。When the above-mentioned fluorocarboxylic acid ester is used in the form of a mixed solvent with the above-mentioned carbonic acid ester, it is necessary to use a mixed solvent containing one or more of the above-mentioned fluorocarboxylic acid esters in an amount of 50% by volume or more. is there. When the content ratio of the fluorocarboxylic acid ester is less than 50% by volume, the lithium ion conductivity of the film formed on the surface of the negative electrode is not sufficient, so that a lithium secondary battery having extremely high charge / discharge efficiency can be obtained. Because it becomes difficult.
【０００９】本発明は、リチウム二次電池の電解液の溶
媒の改良に関する。それゆえ、電解液の溶媒を除く部材
には、次に示す如き従来公知のものを特に制限無く用い
ることができる。The present invention relates to an improvement in a solvent for an electrolytic solution of a lithium secondary battery. Therefore, as the member for removing the solvent of the electrolytic solution, a conventionally known member as shown below can be used without particular limitation.
【００１０】正極活物質の具体例としては、ＬｉＣｏＯ
2 、ＬｉＮｉＯ2 、ＬｉＭｎ2 Ｏ4、ＬｉＶＯ2 及びＬ
ｉＮｂＯ2 が挙げられる。As a specific example of the positive electrode active material, LiCoO
2 , LiNiO 2 , LiMn 2 O 4 , LiVO 2 and L
iNbO 2 .
【００１１】負極材料としては、リチウムイオンを電気
化学的に吸蔵及び放出することが可能な物質及び金属リ
チウムが例示される。リチウムイオンを電気化学的に吸
蔵及び放出することが可能な物質の具体例としては、黒
鉛、コークス等の炭素材料；リチウム−アルミニウム合
金、リチウム−鉛合金、リチウム−錫合金等のリチウム
合金；ＳｎＯ2 、ＳｎＯ、ＴｉＯ2 、Ｎｂ2 Ｏ3 等の電
位が正極活物質に比べて卑な金属酸化物が挙げられる。Examples of the negative electrode material include a substance capable of electrochemically absorbing and releasing lithium ions and lithium metal. Specific examples of substances capable of electrochemically storing and releasing lithium ions include carbon materials such as graphite and coke; lithium alloys such as lithium-aluminum alloy, lithium-lead alloy, and lithium-tin alloy; SnO. 2 , metal oxides such as SnO, TiO 2 , and Nb 2 O 3 which have a lower potential than the positive electrode active material.
【００１２】非水電解液の溶質の具体例としては、Ｌｉ
ＰＦ6 、ＬｉＡｓＦ6 、ＬｉＳｂＦ6 、ＬｉＣｌＯ4 、
ＬｉＢＦ4 、ＬｉＣＦ3 ＳＯ3 、ＬｉＮ（ＣＦ3 Ｓ
Ｏ2 ）2が挙げられる。A specific example of the solute of the non-aqueous electrolyte is Li
PF 6, LiAsF 6, LiSbF 6 , LiClO 4,
LiBF 4 , LiCF 3 SO 3 , LiN (CF 3 S
O 2 ) 2 .
【００１３】本発明電池においては、特定のフッ化カル
ボン酸エステルと負極のリチウムとの反応によりリチウ
ムイオン導電性の良い被膜が負極の表面に形成される。
このため、本発明電池は充放電効率が極めて高い。In the battery of the present invention, a film having good lithium ion conductivity is formed on the surface of the negative electrode by a reaction between a specific fluorocarboxylic acid ester and lithium of the negative electrode.
For this reason, the battery of the present invention has extremely high charge / discharge efficiency.
【００１４】[0014]
【実施例】本発明を実施例に基づいてさらに詳細に説明
するが、本発明は下記実施例に何ら限定されるものでは
なく、その要旨を変更しない範囲で適宜変更して実施す
ることが可能なものである。EXAMPLES The present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples and can be carried out by appropriately changing the scope of the invention without changing its gist. It is something.
【００１５】表１及び表２に示す電解液（溶質濃度は全
て１モル／リットル）を調製し、それぞれの電解液を使
用して、３極式の試験セルＡ１〜Ａ３６，Ｂ１〜Ｂ７を
組み立てた。表２中の溶媒欄において、ＥＣはエチレン
カーボネートを、ＰＣはプロピレンカーボネートを、Ｂ
Ｃはブチレンカーボネートを、ＤＭＣはジメチルカーボ
ネートを、ＥＭＣはエチルメチルカーボネートを、ＤＥ
Ｃはジエチルカーボネートを、ＤＭＥは１，２−ジメト
キシエタンを、ＥＭＥはエトキシメトキシエタンを、Ｄ
ＥＥは１，２−ジエトキシエタンを、ＴＨＦはテトラヒ
ドロフランを、２ＭｅＴＨＦは２−メチルテトラヒドロ
フランを、ＤＯＸＬは１，３−ジオキソランを、２Ｍｅ
ＤＯＸＬは２−メチル−１，３−ジオキソランを、４Ｍ
ｅＤＯＸＬは４−メチル−１，３−ジオキソランを、そ
れぞれ表す。試験セルＡ６〜Ａ８、Ａ１０、Ａ１２、Ａ
２３〜Ａ２８は本発明電池の試験セルであり、他は比較
電池の試験セルである。特に、試験セルＢ２は、特開昭
６２−２９００７３号公報で提案されている溶媒を使用
した従来電池の試験セルである。図１は組み立てた試験
セルの断面模式図であり、図示の試験セルＣは、作用極
（ニッケル電極；電極面積１ｃｍ2 ）１、作用極１に比
べて充分に大きな電気化学的容量を有する対極（リチウ
ム電極；電極面積１０ｃｍ2 ）２、参照極（リチウム電
極；電極面積０．３ｃｍ2 ）３、ルギン管４、絶縁性の
密閉容器５及び電解液６からなる。Electrolyte solutions shown in Tables 1 and 2 (all solute concentrations were 1 mol / liter) were prepared, and triode test cells A1 to A36 and B1 to B7 were assembled using the respective electrolytes. Was. In the solvent column in Table 2, EC represents ethylene carbonate, PC represents propylene carbonate, and B represents
C is butylene carbonate, DMC is dimethyl carbonate, EMC is ethyl methyl carbonate, DE
C is diethyl carbonate, DME is 1,2-dimethoxyethane, EME is ethoxymethoxyethane, D
EE is 1,2-diethoxyethane, THF is tetrahydrofuran, 2MeTHF is 2-methyltetrahydrofuran, DOXL is 1,3-dioxolane, 2Me
DOXL converts 2-methyl-1,3-dioxolan to 4M
eDOXL represents 4-methyl-1,3-dioxolane, respectively. Test cells A6 to A8, A10, A12, A
23 to A28 are test cells of the battery of the present invention, and the others are test cells of comparative batteries. In particular, the test cell B2 is a test cell of a conventional battery using a solvent proposed in JP-A-62-290073. FIG. 1 is a schematic sectional view of an assembled test cell. The illustrated test cell C has a working electrode (nickel electrode; electrode area 1 cm 2 ) 1 and a counter electrode having a sufficiently large electrochemical capacity as compared with the working electrode 1. (Lithium electrode; electrode area 10 cm 2 ) 2, reference electrode (lithium electrode; electrode area 0.3 cm 2 ) 3, Luggin tube 4, insulating closed container 5 and electrolyte 6.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【表２】 [Table 2]
【００１８】次いで、上記の各試験セルを、２５°Ｃに
て、電流密度１ｍＡ／ｃｍ2 で５分間充電した後、１ｍ
Ａ／ｃｍ2 で参照極を基準とする作用極の電位が０．５
Ｖに達するまで放電して、各試験セルの充放電効率を下
式より求めた。これらの充放電効率を先の表１及び表２
に示す。Next, each of the test cells was charged at 25 ° C. at a current density of 1 mA / cm 2 for 5 minutes.
A / cm 2 , the potential of the working electrode with respect to the reference electrode is 0.5
The battery was discharged until the voltage reached V, and the charge / discharge efficiency of each test cell was determined by the following equation. These charge and discharge efficiencies are shown in Tables 1 and 2 above.
Shown in
【００１９】 充放電効率（％）＝放電時間（分）÷充電時間（５分）×１００Charge / discharge efficiency (%) = discharge time (minutes) / charge time (5 minutes) × 100
【００２０】表１及び表２に示すように、本発明電池の
試験セルである試験セルＡ６〜Ａ８、Ａ１０、Ａ１２、
Ａ２３〜Ａ２８は、他の試験セル（比較電池の試験セ
ル）に比べて、充放電効率が高い。この事実から、本発
明で規定するフッ化カルボン酸エステルを単一溶媒又は
特定の炭酸エステルとの混合溶媒の形態で電解液に使用
することにより、充放電効率が向上することが分かる。As shown in Tables 1 and 2, test cells A6 to A8, A10, A12,
A23 to A28 have higher charge / discharge efficiency than other test cells (test cells of comparative batteries). From this fact, it is understood that the use of the fluorinated carboxylic acid ester defined in the present invention in the form of a single solvent or a mixed solvent with a specific carbonic acid ester for the electrolytic solution improves the charge / discharge efficiency.
【００２１】〈フッ化カルボン酸エステルを炭酸エステ
ルとの混合溶媒の形態で使用する場合のフッ化カルボン
酸エステルの好適な比率〉 表３に示す電解液（溶質濃度は全て１モル／リットル）
を調製し、それぞれの電解液を使用して試験セルＡ３７
〜Ａ３９，Ｂ８を組み立て、各試験セルの充放電効率を
先と同様にして求めた。これらの充放電効率を表３に示
す。表３には、試験セルＡ６の充放電効率も表１より転
記して示してある。<Suitable ratio of fluorinated carboxylic acid ester when fluorinated carboxylic acid ester is used in the form of a mixed solvent with carbonate ester> Electrolyte shown in Table 3 (all solute concentrations are 1 mol / l)
Was prepared, and a test cell A37 was prepared using the respective electrolytes.
３９A39 and B8 were assembled, and the charge / discharge efficiency of each test cell was determined in the same manner as above. Table 3 shows the charge / discharge efficiency. In Table 3, the charge / discharge efficiency of the test cell A6 is also transcribed from Table 1.
【００２２】[0022]
【表３】 [Table 3]
【００２３】表３より、ＣＨ3 ＣＯＯＣＦ3 をエチレン
カーボネートとの混合溶媒の形態で使用する場合は、充
放電効率の極めて高いリチウム二次電池を得る上で、混
合溶媒中のＣＨ3 ＣＯＯＣＦ3 の比率を５０体積％以上
とする必要があることが分かる。[0023] From Table 3, when used in the form of a mixed solvent of ethylene carbonate CH 3 COOCF 3 is in obtaining a very high lithium secondary battery charge and discharge efficiency, the mixed solvent of CH 3 COOCF 3 It is understood that the ratio needs to be 50% by volume or more.
【００２４】上記の実施例では、本発明で規定するフッ
化カルボン酸エステルを１種類使用する場合について説
明したが、２種類以上を併用した場合にも、同様に、充
放電効率の極めて高いリチウム二次電池が得られること
を確認した。In the above embodiment, the case where one kind of the fluorocarboxylic acid ester defined in the present invention is used has been described. However, when two or more kinds are used in combination, lithium having extremely high charge / discharge efficiency is also similarly used. It was confirmed that a secondary battery was obtained.
【００２５】[0025]
【発明の効果】負極のリチウムと反応してリチウムイオ
ン導電性の良い被膜を負極の表面に形成する特定のフッ
化カルボン酸エステルが電解液の溶媒として使用されて
いるので、本発明電池は充放電効率が極めて高い。As the specific fluorinated carboxylate which reacts with the lithium of the negative electrode to form a film having good lithium ion conductivity on the surface of the negative electrode is used as a solvent for the electrolytic solution, the battery of the present invention is not charged. Extremely high discharge efficiency.
【図１】実施例で組み立てた試験セルの断面模式図であ
る。FIG. 1 is a schematic cross-sectional view of a test cell assembled in an example.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 能間 俊之 大阪府守口市京阪本通２丁目５番５号 三洋電機株式会社内 (72)発明者 西尾 晃治 大阪府守口市京阪本通２丁目５番５号 三洋電機株式会社内 (56)参考文献 特開 平６−20719（ＪＰ，Ａ) 特開 平７−37613（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 10/40 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiyuki Noma 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture Inside Sanyo Electric Co., Ltd. (72) Koji Nishio 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture No. 5 Inside Sanyo Electric Co., Ltd. (56) References JP-A-6-20719 (JP, A) JP-A-7-37613 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) ) H01M 10/40
Claims (1)
Ｆ3 、ＣＦ3 ＣＯＯＣＨ2 ＣＦ3 、ＣＦ3 ＣＨ2 ＣＯＯ
ＣＦ3 及びＣＦ3 ＣＯＯＣＨ2 ＣＦ3 よりなる群から選
ばれた少なくとも１種のフッ化カルボン酸エステルのみ
からなる溶媒、又は、前記少なくとも１種のフッ化カル
ボン酸エステルと、エチレンカーボネート、プロピレン
カーボネート、ブチレンカーボネート、ジメチルカーボ
ネート、エチルメチルカーボネート及びジエチルカーボ
ネートよりなる群から選ばれた少なくとも１種の炭酸エ
ステルとからなり、前記少なくとも１種のフッ化カルボ
ン酸エステルを５０体積％以上含有する混合溶媒が、電
解液の溶媒として使用されているリチウム二次電池。1. CH 3 COOCF 3 , CF 3 COOC
F 3 , CF 3 COOCH 2 CF 3 , CF 3 CH 2 COO
A solvent consisting of at least one kind of fluorinated carboxylic acid ester selected from the group consisting of CF 3 and CF 3 COOCH 2 CF 3 , or the at least one kind of fluorinated carboxylic acid ester, ethylene carbonate, propylene carbonate, Butylene carbonate, dimethyl carbonate, ethyl methyl carbonate and at least one carbonate ester selected from the group consisting of diethyl carbonate, a mixed solvent containing at least 50% by volume or more of the at least one fluorocarboxylic acid ester, A lithium secondary battery used as a solvent for an electrolytic solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28926696A JP3311611B2 (en) | 1996-10-11 | 1996-10-11 | Lithium secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28926696A JP3311611B2 (en) | 1996-10-11 | 1996-10-11 | Lithium secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10116627A JPH10116627A (en) | 1998-05-06 |
| JP3311611B2 true JP3311611B2 (en) | 2002-08-05 |
Family
ID=17740942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28926696A Expired - Fee Related JP3311611B2 (en) | 1996-10-11 | 1996-10-11 | Lithium secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3311611B2 (en) |
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| US9673450B2 (en) | 2011-09-02 | 2017-06-06 | Solvay Sa | Lithium ion battery |
| US9979050B2 (en) | 2011-09-02 | 2018-05-22 | Solvay Sa | Fluorinated electrolyte compositions |
| US10044066B2 (en) | 2012-06-01 | 2018-08-07 | Solvary SA | Fluorinated electrolyte compositions |
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| US10686220B2 (en) | 2013-04-04 | 2020-06-16 | Solvay Sa | Nonaqueous electrolyte compositions |
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| JP5062459B2 (en) * | 2001-05-15 | 2012-10-31 | 株式会社Ｇｓユアサ | Nonaqueous electrolyte secondary battery |
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| WO2018061301A1 (en) * | 2016-09-30 | 2018-04-05 | パナソニック株式会社 | Nonaqueous electrolyte and nonaqueous-electrolyte secondary cell |
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| JP2018195560A (en) * | 2017-05-16 | 2018-12-06 | パナソニックＩｐマネジメント株式会社 | Negative electrode active material for nonaqueous secondary battery, and nonaqueous secondary battery |
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-
1996
- 1996-10-11 JP JP28926696A patent/JP3311611B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9673450B2 (en) | 2011-09-02 | 2017-06-06 | Solvay Sa | Lithium ion battery |
| US9979050B2 (en) | 2011-09-02 | 2018-05-22 | Solvay Sa | Fluorinated electrolyte compositions |
| US10044066B2 (en) | 2012-06-01 | 2018-08-07 | Solvary SA | Fluorinated electrolyte compositions |
| US10074874B2 (en) | 2012-06-01 | 2018-09-11 | Solvay Sa | Additives to improve electrolyte performance in lithium ion batteries |
| US10686220B2 (en) | 2013-04-04 | 2020-06-16 | Solvay Sa | Nonaqueous electrolyte compositions |
| US10916805B2 (en) | 2013-04-04 | 2021-02-09 | Solvay Sa | Nonaqueous electrolyte compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10116627A (en) | 1998-05-06 |
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