JPH01124969A - Lithium secondary battery - Google Patents
Lithium secondary batteryInfo
- Publication number
- JPH01124969A JPH01124969A JP62284056A JP28405687A JPH01124969A JP H01124969 A JPH01124969 A JP H01124969A JP 62284056 A JP62284056 A JP 62284056A JP 28405687 A JP28405687 A JP 28405687A JP H01124969 A JPH01124969 A JP H01124969A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- negative electrode
- electrolyte
- dimethoxyethane
- secondary battery
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims abstract description 24
- -1 transition metal chalcogen compound Chemical class 0.000 claims description 8
- 229910000733 Li alloy Inorganic materials 0.000 claims description 5
- 239000008151 electrolyte solution Substances 0.000 claims description 5
- 239000001989 lithium alloy Substances 0.000 claims description 5
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 239000007774 positive electrode material Substances 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 18
- 239000002904 solvent Substances 0.000 abstract description 6
- 230000006866 deterioration Effects 0.000 abstract description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 3
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 abstract description 3
- 238000002161 passivation Methods 0.000 abstract 1
- 229910013115 LiBFn Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- CFJRPNFOLVDFMJ-UHFFFAOYSA-N titanium disulfide Chemical compound S=[Ti]=S CFJRPNFOLVDFMJ-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000012300 argon atmosphere Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229910013075 LiBF Inorganic materials 0.000 description 2
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- VRSMQRZDMZDXAU-UHFFFAOYSA-N bis(sulfanylidene)niobium Chemical compound S=[Nb]=S VRSMQRZDMZDXAU-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- JWZCKIBZGMIRSW-UHFFFAOYSA-N lead lithium Chemical compound [Li].[Pb] JWZCKIBZGMIRSW-UHFFFAOYSA-N 0.000 description 2
- SPEUIVXLLWOEMJ-UHFFFAOYSA-N 1,1-dimethoxyethane Chemical compound COC(C)OC SPEUIVXLLWOEMJ-UHFFFAOYSA-N 0.000 description 1
- CGPYALSRRQEZLW-UHFFFAOYSA-N [Ni](=S)(=S)=S Chemical compound [Ni](=S)(=S)=S CGPYALSRRQEZLW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- WCQOLGZNMNEYDX-UHFFFAOYSA-N bis(selanylidene)vanadium Chemical compound [Se]=[V]=[Se] WCQOLGZNMNEYDX-UHFFFAOYSA-N 0.000 description 1
- NFMAZVUSKIJEIH-UHFFFAOYSA-N bis(sulfanylidene)iron Chemical compound S=[Fe]=S NFMAZVUSKIJEIH-UHFFFAOYSA-N 0.000 description 1
- WVMYSOZCZHQCSG-UHFFFAOYSA-N bis(sulfanylidene)zirconium Chemical compound S=[Zr]=S WVMYSOZCZHQCSG-UHFFFAOYSA-N 0.000 description 1
- JYPVGDJNZGAXBB-UHFFFAOYSA-N bismuth lithium Chemical compound [Li].[Bi] JYPVGDJNZGAXBB-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910000339 iron disulfide Inorganic materials 0.000 description 1
- GCICAPWZNUIIDV-UHFFFAOYSA-N lithium magnesium Chemical compound [Li].[Mg] GCICAPWZNUIIDV-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TVWWSIKTCILRBF-UHFFFAOYSA-N molybdenum trisulfide Chemical compound S=[Mo](=S)=S TVWWSIKTCILRBF-UHFFFAOYSA-N 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
-
- 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〕
本発明はリチウム二次電池に係わり、さらに詳しくはそ
の電解液の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a lithium secondary battery, and more particularly to improvement of its electrolyte.
従来、リチウム二次電池では、負極に金属リチウムを単
独で用いていたが、充放電サイクルの繰り返しにより、
負極が劣化するという間Ｎケあった。このような負極劣
化の大きな要因として、充電時に負極上に析出した電着
リチウムが非常に活性で電解液中の有機溶媒と反応して
その表面に不働態膜を形成して、次の放電時に負極活物
質として役立たなくなることがあげられる。Conventionally, lithium secondary batteries used metallic lithium alone as the negative electrode, but due to repeated charging and discharging cycles,
There were N cases where the negative electrode deteriorated. One of the major causes of such negative electrode deterioration is that the electrodeposited lithium deposited on the negative electrode during charging is extremely active and reacts with the organic solvent in the electrolyte to form a passive film on its surface, which is then deposited on the negative electrode during the next discharge. One example of this is that it becomes useless as a negative electrode active material.
そのため、リチウム−アルミニウムなどのリチウム合金
を負極に用い、充電時の負極上に析出する活性な電着リ
チウムをアルミニウムなどとの電気化学的合金化反応を
利用して合金化させることにより活性な電着リチウムの
状態でとどまる時間を短（して負極の劣化を防止したり
（例えば、米国特許第３．５０６．４９２号明細書）
、あるいは電解液中に添加剤を加えることによって負極
の劣化を防止することが行われているが（例えば、Ｊ、
ＰｏｗｅｒＳｏｕｒｃｅｓ、 １４．１９８（１９８５
））、それらのみによっては、充分に満足し得るほどの
改善効果が得られていない。Therefore, a lithium alloy such as lithium-aluminum is used as the negative electrode, and active electrodeposited lithium, which is deposited on the negative electrode during charging, is alloyed with aluminum etc. using an electrochemical alloying reaction. Shorten the time that lithium remains in the state of deposited lithium (to prevent deterioration of the negative electrode (for example, U.S. Pat. No. 3,506,492))
Alternatively, the deterioration of the negative electrode has been prevented by adding additives to the electrolyte (for example, J,
PowerSources, 14.198 (1985
)), these alone have not produced a sufficiently satisfactory improvement effect.
（発明が解決しようとする問題点〕
この発明は従来のリチウム二次電池が持っていた負極の
可逆性が低いという問題点を解決し、それによって充放
電サイクル特性の優れたリチウム二次電池を提供するこ
とを目的とする。(Problems to be Solved by the Invention) This invention solves the problem of low reversibility of the negative electrode of conventional lithium secondary batteries, thereby creating a lithium secondary battery with excellent charge-discharge cycle characteristics. The purpose is to provide.
本発明は電解液を改良して、充電時の活性な電着リチウ
ムと電解液溶媒との反応を抑制して、負極の可逆性を高
め、充放電サイクル特性を高めたものである。The present invention improves the electrolyte, suppresses the reaction between active electrodeposited lithium and the electrolyte solvent during charging, increases the reversibility of the negative electrode, and improves the charge-discharge cycle characteristics.
すなわち、本発明は、ＬｉＢＦ４（ホウフッ化リチウム
）を１．２−ジメトキシエタンに４モル／１以上飽和濃
度までの高濃度に溶解した電解液を用いたことを特徴と
するリチウム二次電池に関する。That is, the present invention relates to a lithium secondary battery characterized by using an electrolytic solution in which LiBF4 (lithium borofluoride) is dissolved in 1,2-dimethoxyethane at a high concentration of 4 mol/1 or more up to a saturation concentration.
上記のようなＬ ｉ Ｂ Ｆ ４濃度が４モル／Ｉ１．
以上の高濃度電解液は、電解液溶媒である１、２−ジメ
トキシエタンのほとんどがリチウムイオンに配位した状
態になっており、フリーの１．２−ジメトキシエタンが
ほとんどないため、活性な電着リチウムと電解液溶媒と
の反応が抑制され、電着リチウム上への不働態膜の形成
が生じなくなり、負極の劣化が防止され、可逆性が向上
する。When the L i B F 4 concentration as above is 4 mol/I1.
In the above highly concentrated electrolyte, most of the 1,2-dimethoxyethane, which is the electrolyte solvent, is coordinated with lithium ions, and there is almost no free 1,2-dimethoxyethane, so there is no active charge. The reaction between the deposited lithium and the electrolyte solvent is suppressed, the formation of a passive film on the electrodeposited lithium is prevented, the deterioration of the negative electrode is prevented, and the reversibility is improved.
本発明において、負極にはリチウムまたはリチウム合金
が用いられるが、その際のリチウム合金としては、例え
ばリチウム−アルミニウム、リチウム−鉛、リチウム−
インジウム、リチウム−ガリウム、リチウム−ビスマス
、リチウム−マグネシウム、リチウム−インジウム−ガ
リウムなどや、それらにさらに他の金属が少量添加され
たリチウム合金などがあげられる。In the present invention, lithium or a lithium alloy is used for the negative electrode, and examples of the lithium alloy include lithium-aluminum, lithium-lead, and lithium-lead.
Examples include indium, lithium-gallium, lithium-bismuth, lithium-magnesium, lithium-indium-gallium, and lithium alloys to which small amounts of other metals are added.
正極活物質としては、遷移金属のカルコゲン化合物が用
いられる。これは遷移金属のカルコゲン化合物は結晶構
造が層状で、その内部でのリチウムイオンの拡散定数が
大きく、正極側における充放電反応がスムーズに進行す
ることによるものである。そして、このような遷移金属
のカルコゲン化合物としては、例えば二硫化チタン（Ｔ
ｉＳｘ）、二硫化モリブデン（Ｍ ｏ Ｓ り、三硫化
モリブデン（Ｍ ｏ Ｓ ｓ）、二硫化鉄（ＦｅＳり、
硫化ジルコニウム（ＺｒＳｇ）、二硫化ニオブ（ＮｂＳ
ｔ）、三硫化ニッケル（Ｎ Ｉ Ｐ Ｓ、）、バナジウ
ムセレナイド（ＶＳｇ）などがあげられる。A transition metal chalcogen compound is used as the positive electrode active material. This is because the transition metal chalcogen compound has a layered crystal structure, and the diffusion constant of lithium ions inside it is large, so that the charge/discharge reaction on the positive electrode side proceeds smoothly. Examples of transition metal chalcogen compounds include titanium disulfide (T
iSx), molybdenum disulfide (MoS), molybdenum trisulfide (MoS), iron disulfide (FeS),
Zirconium sulfide (ZrSg), niobium disulfide (NbS)
t), nickel trisulfide (NIPS), vanadium selenide (VSg), and the like.
つぎに実施例をあげて本発明をさらに説明する。 Next, the present invention will be further explained with reference to Examples.
実施例１
電解液としては、５６．２５ｇのＬｉＢＦｎをアルゴン
雰囲気中で１．２−ジメトキシエタンに溶解し、全量を
１００ｍｊ！としたＬｉＢＦｎ濃度が６モル／ｌのもの
を用いた。Example 1 As an electrolytic solution, 56.25 g of LiBFn was dissolved in 1,2-dimethoxyethane in an argon atmosphere, and the total amount was 100 mj! A LiBFn concentration of 6 mol/l was used.
負極には厚さ２００μｍのリチウムホイルを直径１０ｍ
−の円形に打ち抜いたものを用い、正極には二硫化チタ
ンとその５重量％に相当するポリテトラフルオロエチレ
ン粉末との混合物を厚さ２２０μｍ。The negative electrode is a lithium foil with a thickness of 200 μm and a diameter of 10 m.
The positive electrode was made of a mixture of titanium disulfide and polytetrafluoroethylene powder corresponding to 5% by weight of titanium disulfide in a thickness of 220 μm.
直径１０．８ｇｇ−のペレット状に成形したものを用い
、第１図に示す構造のリチウム二次電池を作製した。A lithium secondary battery having the structure shown in FIG. 1 was fabricated using pellets having a diameter of 10.8 gg.
第１図において、■は前記リチウムホイルからなる負極
で、２は前記した二硫化チタンを正極活物質とするペレ
ット状成形体からなる正極である。In FIG. 1, ``■'' is a negative electrode made of the lithium foil described above, and 2 is a positive electrode made of a pellet-shaped molded body containing the above-mentioned titanium disulfide as a positive electrode active material.
３は微孔性ポリブロピレツからなるセパレータ、４はポ
リプロピレン不織布からなる電解液吸収体、５はステン
レス鋼製の負極毎、６はステンレス鋼製網からなる負極
集電体、７はステンレス鋼製の正極缶、８はステンレス
鋼製網よりなる正極集電体、９はポリプロピレン製のガ
スケットである。3 is a separator made of microporous polypropylene, 4 is an electrolyte absorber made of polypropylene nonwoven fabric, 5 is a negative electrode made of stainless steel, 6 is a negative electrode current collector made of a stainless steel mesh, and 7 is a positive electrode made of stainless steel. The can, 8 is a positive electrode current collector made of a stainless steel mesh, and 9 is a gasket made of polypropylene.
この電池における負極の理論電気量は約３２．６ｍＡｈ
で、正極の理論電気量は約８ｍＡｈであり、電解液の注
入量は４５μ！である。The theoretical amount of electricity of the negative electrode in this battery is approximately 32.6mAh
So, the theoretical amount of electricity of the positive electrode is about 8mAh, and the amount of electrolyte injected is 45μ! It is.
実施例２
３７．５ｇのＬｉＢＦａをアルゴン雰囲気中で１．２−
ジメトキシエタンに溶解し、全量を１００ｍｊ！とじた
ＬｉＢＦ４１度度が４モル／１のものを電解液として用
いたほかは実施例１と同様の電池を作製した。Example 2 37.5 g of LiBFa was added to 1.2-
Dissolve in dimethoxyethane and bring the total amount to 100mj! A battery was produced in the same manner as in Example 1, except that a closed LiBF with a ratio of 4 mol/1 was used as the electrolyte.
実施例３
９３．７５ ｇのＬｉＢＦｎをアルゴン雰囲気中で１．
２−ジメトキシエタンに熔解し、全量をＬｏｏｍ ｊ！
′とじて、ＬｉＢＦ４１度が１０モル／１．
の電解液を得ようとしたが、飽和量を超え、沈澱を生じ
たため、その上澄み液を採取し、このＬ ｉ Ｂ Ｆ
ａが飽和濃度の電解液を用いたほかは実施例１と同様の
電池を作製した。Example 3 93.75 g of LiBFn was dissolved in an argon atmosphere for 1.5 g.
Dissolve in 2-dimethoxyethane and transfer the entire amount to Loom j!
', LiBF41 degree is 10 mol/1.
An attempt was made to obtain an electrolytic solution of
A battery was produced in the same manner as in Example 1, except that an electrolytic solution having a saturation concentration was used.
比較例１
９．３７５ｇのＬｉＢＦ、をアルゴン雰囲気中で１．２
−ジメトキシエタンに溶解し、全量を１００ｍｊ！とし
たＬｉＢＦｎ：ａ度が１モル／ｌのものを電解液として
用いたほかは実施例１と同様の電池を作製した。Comparative Example 1 9.375g of LiBF was heated to 1.2g in an argon atmosphere.
-Dissolve in dimethoxyethane and make the total amount 100mj! A battery was produced in the same manner as in Example 1, except that LiBFn:A with a degree of 1 mol/l was used as the electrolyte.
上記実施例１〜３の電池および比較例１の電池を２５°
Ｃ，５００μＡで０．５ｍＡｈの電気量を充放電し、放
電電圧が１．８ｖに低下するまでに０．５ｍＡｈの放電
容量が得られたサイクル数を調べ、その結果を第１表に
示した。The batteries of Examples 1 to 3 and the battery of Comparative Example 1 were heated at 25°
C, 0.5 mAh of electricity was charged and discharged at 500 μA, and the number of cycles at which a discharge capacity of 0.5 mAh was obtained before the discharge voltage decreased to 1.8 V was investigated, and the results are shown in Table 1. .
第 １ 表
第１表に示すように、実施例１〜３の電池は、従来電池
に相当する比較例１の電池に比べて、サイクル数が多く
、充放電サイクル特性が優れていた。Table 1 As shown in Table 1, the batteries of Examples 1 to 3 had a greater number of cycles and had better charge-discharge cycle characteristics than the battery of Comparative Example 1, which corresponds to the conventional battery.
以上説明したように、本発明では、Ｌ ｉ Ｂ Ｆ ａ
を１．２−ジメトキシエタンに４モル／１以上飽和濃度
までの高濃度に溶解して、フリーの１．２−ジメトキシ
エタンを少なくすることにより、充電時の活性な電着リ
チウムと電解液溶媒との反応を抑制して、負極の可逆性
を高め、充放電サイクル特性の優れたリチウム二次電池
を提供することができた。As explained above, in the present invention, L i B Fa
By dissolving 1,2-dimethoxyethane at a high concentration of 4 mol/1 or more up to saturation concentration to reduce free 1,2-dimethoxyethane, active electrodeposited lithium and electrolyte solvent during charging can be reduced. We were able to suppress the reaction with the negative electrode, increase the reversibility of the negative electrode, and provide a lithium secondary battery with excellent charge-discharge cycle characteristics.
第１図は本発明のリチウム二次電池の一実施例を示す断
面図である。
１・・・負極、 ２・・・正極、 ３・・・セパレータ
、４・・・電解液吸収体
特許出願人 日立マクセル株式会社
ｉｇｌ”、ｓ−遺FIG. 1 is a sectional view showing an embodiment of the lithium secondary battery of the present invention. 1... Negative electrode, 2... Positive electrode, 3... Separator, 4... Electrolyte absorber patent applicant Hitachi Maxell Co., Ltd.
Claims (1)
用い、負極にリチウムまたはリチウム合金を用いるリチ
ウム二次電池において、ＬｉＢＦ＿４を１、２−ジメト
キシエタンに４モル／ｌ以上飽和濃度まで溶解した電解
液を用いたことを特徴とするリチウム二次電池。(1) In a lithium secondary battery that uses a transition metal chalcogen compound as the positive electrode active material and lithium or lithium alloy as the negative electrode, an electrolytic solution in which LiBF_4 is dissolved in 1,2-dimethoxyethane to a saturation concentration of 4 mol/l or more A lithium secondary battery characterized by using.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62284056A JPH01124969A (en) | 1987-11-10 | 1987-11-10 | Lithium secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62284056A JPH01124969A (en) | 1987-11-10 | 1987-11-10 | Lithium secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01124969A true JPH01124969A (en) | 1989-05-17 |
Family
ID=17673718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62284056A Pending JPH01124969A (en) | 1987-11-10 | 1987-11-10 | Lithium secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01124969A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008527662A (en) * | 2005-01-18 | 2008-07-24 | オクシス・エナジー・リミテッド | Improvements related to electrolyte compositions for batteries using sulfur or sulfur compounds |
| JP2010073489A (en) * | 2008-09-18 | 2010-04-02 | Nissan Motor Co Ltd | Electrolyte excellent in thermal stability and secondary battery prepared using the same |
| WO2016079919A1 (en) * | 2014-11-18 | 2016-05-26 | 国立大学法人東京大学 | Electrolyte solution |
| US9893387B2 (en) | 2013-03-25 | 2018-02-13 | Oxis Energy Limited | Method of charging a lithium-sulphur cell |
| US9899705B2 (en) | 2013-12-17 | 2018-02-20 | Oxis Energy Limited | Electrolyte for a lithium-sulphur cell |
| US9935343B2 (en) | 2013-03-25 | 2018-04-03 | Oxis Energy Limited | Method of cycling a lithium-sulphur cell |
| US10020533B2 (en) | 2013-08-15 | 2018-07-10 | Oxis Energy Limited | Laminated lithium-sulphur cell |
| US10038223B2 (en) | 2013-03-25 | 2018-07-31 | Oxis Energy Limited | Method of charging a lithium-sulphur cell |
| US10461316B2 (en) | 2012-02-17 | 2019-10-29 | Oxis Energy Limited | Reinforced metal foil electrode |
| US10811728B2 (en) | 2014-05-30 | 2020-10-20 | Oxis Energy Ltd. | Lithium-sulphur cell |
-
1987
- 1987-11-10 JP JP62284056A patent/JPH01124969A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008527662A (en) * | 2005-01-18 | 2008-07-24 | オクシス・エナジー・リミテッド | Improvements related to electrolyte compositions for batteries using sulfur or sulfur compounds |
| JP2010073489A (en) * | 2008-09-18 | 2010-04-02 | Nissan Motor Co Ltd | Electrolyte excellent in thermal stability and secondary battery prepared using the same |
| US10461316B2 (en) | 2012-02-17 | 2019-10-29 | Oxis Energy Limited | Reinforced metal foil electrode |
| US9893387B2 (en) | 2013-03-25 | 2018-02-13 | Oxis Energy Limited | Method of charging a lithium-sulphur cell |
| US9935343B2 (en) | 2013-03-25 | 2018-04-03 | Oxis Energy Limited | Method of cycling a lithium-sulphur cell |
| US10038223B2 (en) | 2013-03-25 | 2018-07-31 | Oxis Energy Limited | Method of charging a lithium-sulphur cell |
| US10020533B2 (en) | 2013-08-15 | 2018-07-10 | Oxis Energy Limited | Laminated lithium-sulphur cell |
| US9899705B2 (en) | 2013-12-17 | 2018-02-20 | Oxis Energy Limited | Electrolyte for a lithium-sulphur cell |
| US10811728B2 (en) | 2014-05-30 | 2020-10-20 | Oxis Energy Ltd. | Lithium-sulphur cell |
| WO2016079919A1 (en) * | 2014-11-18 | 2016-05-26 | 国立大学法人東京大学 | Electrolyte solution |
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