JP2964732B2 - Rechargeable battery - Google Patents
Rechargeable batteryInfo
- Publication number
- JP2964732B2 JP2964732B2 JP3258374A JP25837491A JP2964732B2 JP 2964732 B2 JP2964732 B2 JP 2964732B2 JP 3258374 A JP3258374 A JP 3258374A JP 25837491 A JP25837491 A JP 25837491A JP 2964732 B2 JP2964732 B2 JP 2964732B2
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- lithium
- electrode
- battery
- test
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052744 lithium Inorganic materials 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 8
- 239000007773 negative electrode material Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011255 nonaqueous electrolyte Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 4
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 229910000978 Pb alloy Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910021446 cobalt carbonate Inorganic materials 0.000 description 1
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- JWZCKIBZGMIRSW-UHFFFAOYSA-N lead lithium Chemical compound [Li].[Pb] JWZCKIBZGMIRSW-UHFFFAOYSA-N 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate 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
- 239000000463 material Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000011863 silicon-based powder Substances 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
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はアルカリ金属又はアルカ
リ土類金属を負極活物質とする非水電解液二次電池の改
良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a non-aqueous electrolyte secondary battery using an alkali metal or an alkaline earth metal as a negative electrode active material.
【０００２】[0002]
【従来の技術】従来、負極活物質としてリチウムを使用
する非水電解液二次電池に用いる負極集電体としては、
特公昭６３−２２０１９号公報に記載されている如く、
鉛又は鉛合金を用いることが知られている。2. Description of the Related Art Conventionally, as a negative electrode current collector used for a non-aqueous electrolyte secondary battery using lithium as a negative electrode active material,
As described in JP-B-63-22019,
It is known to use lead or lead alloys.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記負極集電
体として鉛又は鉛合金を用いた非水電解液二次電池は、
負極集電体の重量当りの容量が小さいという問題があ
る。また、充放電に伴ってリチウム−鉛又は鉛合金が微
細化、脱落して容量を失うという問題もある。However, a non-aqueous electrolyte secondary battery using lead or a lead alloy as the negative electrode current collector,
There is a problem that the capacity per weight of the negative electrode current collector is small. In addition, there is a problem that lithium-lead or a lead alloy is miniaturized and dropped due to charge / discharge and loses capacity.
【０００４】[0004]
【課題を解決するための手段】本発明は上記の課題を解
決するために、アルカリ金属又はアルカリ土類金属を負
極活物質として用いる非水電解液二次電池において、負
極活物質の支持体を金属単結晶から形成した二次電池と
したものである。In order to solve the above-mentioned problems, the present invention provides a non-aqueous electrolyte secondary battery using an alkali metal or an alkaline earth metal as a negative electrode active material. This is a secondary battery formed from a metal single crystal.
【０００５】[0005]
【実施例】以下、本発明を実施例により説明する。 実施例１ （単極性能試験） 厚み０．５ｍｍの厚さに旋盤でスライスしたシリコン単
結晶を５ｍｍ×５ｍｍの大きさ切り出し、重量を測って
おく。つぎに、１０ｍｍ×１０ｍｍのニッケルメッシュ
２枚で挟み込み、ワイヤーを取り付け、試験電極とし
た。以下の操作はすべて乾燥空気中で行ない、材料はす
べてあらかじめ十分に乾燥を行なった後に用いた。適当
な大きさの金属リチウムをニッケル板上に圧着したもの
を２個作成し、対極および電位参照極とした。ビーカー
中に過塩素酸リチウムの１ｍｏｌ／ｌのプロピレンカー
ボネート溶液を入れ、上記のように作成した３個の電
極、即ち試験電極・対極・参照極を同溶液中に浸漬し、
三端子セルとした。直流定電流電源からプラスを対極
に、マイナスを試験極に接続し電流を流すと試験極にリ
チウムが取り込まれる（充電）。次に電流の方向を逆に
すると、試験極に取り込まれたリチウムが放出される
（放電）。このようにして試験極のリチウム電池用負極
としての容量を調べた。電流密度はいずれも１ｍＡ／cm
2 とした。充電および放電の終了は、参照極に対する試
験極の電位が０．００Ｖあるいは２．００Ｖに達した時
点とした。この試験により、シリコン単結晶のリチウム
受け入れ量を求めると、３．６５ｍＡｈ／ｍｇであっ
た。純粋な金属リチウムの容量は、理論的に３．８６ｍ
Ａｈ／ｍｇであるので、リチウム電池用負極としては全
く遜色のない性能を持っていることが分かる。The present invention will be described below with reference to examples. Example 1 (Single-pole performance test) A silicon single crystal sliced into a thickness of 0.5 mm with a lathe is cut out into a size of 5 mm x 5 mm, and the weight is measured. Next, it was sandwiched between two pieces of nickel mesh of 10 mm × 10 mm, a wire was attached, and a test electrode was obtained. The following operations were all performed in dry air, and all the materials were used after sufficient drying in advance. Two pieces of appropriately sized metallic lithium were pressed on a nickel plate to prepare a counter electrode and a potential reference electrode. A 1 mol / l propylene carbonate solution of lithium perchlorate was placed in a beaker, and the three electrodes prepared as described above, ie, a test electrode, a counter electrode, and a reference electrode, were immersed in the same solution.
A three-terminal cell was used. When a positive current is connected to the test electrode and a negative current is connected to the test electrode from the DC constant current power supply and a current flows, lithium is taken into the test electrode (charging). Next, when the direction of the current is reversed, lithium taken into the test electrode is released (discharge). Thus, the capacity of the test electrode as a negative electrode for a lithium battery was examined. Current density is 1 mA / cm
And 2 . The charge and discharge were terminated when the potential of the test electrode with respect to the reference electrode reached 0.00 V or 2.00 V. According to this test, the amount of lithium received by the silicon single crystal was 3.65 mAh / mg. The capacity of pure metallic lithium is 3.86 m theoretically
Since it is Ah / mg, it can be seen that the negative electrode for a lithium battery has performance comparable to that of a negative electrode.
【０００６】実施例２ （電池試験） 正極活物質の調製は、炭酸リチウムと炭酸コバルトとを
Ｌｉ／Ｃｏモル比が１の混合物を空気中６５０℃で５時
間仮焼成した後、９００℃で２０時間焼成した。焼成後
冷却し、粉砕したものを活物質とした。これによって得
られたＬｉＣｏＯ2 を用いて次のようにしてコイン型電
池を試作した。ＬｉＣｏＯ2 とアセチレンブラック及び
ポリテトラフルオロエチレン粉末とを重量比８５：１
０：５で混合し、イソプロピルアルコールを加えて十分
混練した。これをローラープレスにより厚み０．８ｍｍ
のシート状に形成した。次にこれを１６ｍｍの円形に打
ち抜き、減圧下２００℃で１５時間熱処理し正極を得
た。正極は集電体の付いた正極缶に圧接して用いた。負
極は厚み０．４ｍｍの厚さに旋盤でスライスした直径１
５ｍｍのシリコン単結晶を負極缶に配置して形成した。Example 2 (Battery test) A positive electrode active material was prepared by calcining a mixture of lithium carbonate and cobalt carbonate at a Li / Co molar ratio of 1 in air at 650 ° C for 5 hours, and then calcining the mixture at 900 ° C for 20 hours. Fired for hours. After firing, the mixture was cooled and pulverized to obtain an active material. Using the thus obtained LiCoO 2 , a coin-type battery was prototyped as follows. LiCoO 2 and acetylene black and polytetrafluoroethylene powder in a weight ratio of 85: 1
The mixture was mixed at 0: 5, and isopropyl alcohol was added and kneaded well. 0.8mm thick with a roller press
In the form of a sheet. Next, this was punched out into a 16 mm circle and heat-treated at 200 ° C. under reduced pressure for 15 hours to obtain a positive electrode. The positive electrode was used by pressing against a positive electrode can with a current collector. The negative electrode has a diameter of 1 mm sliced on a lathe to a thickness of 0.4 mm.
A 5 mm silicon single crystal was formed by placing it in a negative electrode can.
【０００７】電解液にはγ−ブチロラクトンに１ｍｏｌ
／ｌのＬｉＢＦ4 を溶解したものを用い、セパレータに
はポリプロピレン製微多孔膜を用いた。上記正極、負
極、電解質及びセパレータを用いて直径２０ｍｍ、厚さ
１．６ｍｍのコイン型のリチウム電池を作製した。以
下、この電池を電池Ａとする。The electrolyte contains 1 mol of γ-butyrolactone.
/ L of LiBF 4 was dissolved, and a polypropylene microporous membrane was used as a separator. A coin-type lithium battery having a diameter of 20 mm and a thickness of 1.6 mm was manufactured using the above-described positive electrode, negative electrode, electrolyte, and separator. Hereinafter, this battery is referred to as Battery A.
【０００８】比較例１ 負極に、シリコンの粉末をテフロンをバインダーとして
厚み０．４ｍｍのシート状に成形したものを用いたこと
の他は実施例２と同じに形成した電池をＢとする。Comparative Example 1 A battery B was formed in the same manner as in Example 2 except that a negative electrode was formed by molding silicon powder into a sheet having a thickness of 0.4 mm using Teflon as a binder.
【０００９】比較例２ 負極に、０．４ｍｍの金属リチウムを用いたことの他は
実施例２と同じに形成した電池をＣとする。Comparative Example 2 A battery formed in the same manner as in Example 2 except that 0.4 mm of metallic lithium was used for the negative electrode was designated as C.
【００１０】比較例３ 負極に、０．４ｍｍの金属鉛を用いたことの他は実施例
２と同じに形成した電池をＤとする。このようにして作
製した電池Ａ，Ｂ，Ｃ，Ｄを用いて充放電サイクル試験
を行なった。試験条件は、充電電流１ｍＡ、充電終止電
圧４．１Ｖ、放電電流１ｍＡ、放電終止電圧３．４Ｖと
した。サイクル試験の結果を図１に示す。図１から明ら
かな如く、シリコン単結晶をリチウム電池用負極支持体
として用いた電池Ａは、そのサイクル性能の面からも従
来の電池Ｂ，Ｃ，Ｄに比べてきわめて優れていることが
わかる。Comparative Example 3 A battery D was formed in the same manner as in Example 2 except that 0.4 mm of metallic lead was used for the negative electrode. A charge / discharge cycle test was performed using the batteries A, B, C, and D thus manufactured. The test conditions were a charge current of 1 mA, a charge end voltage of 4.1 V, a discharge current of 1 mA, and a discharge end voltage of 3.4 V. FIG. 1 shows the results of the cycle test. As is clear from FIG. 1, it can be seen that the battery A using the silicon single crystal as the negative electrode support for a lithium battery is much superior to the conventional batteries B, C and D in terms of cycle performance.
【００１１】[0011]
【発明の効果】本発明は上記の通り、アルカリ金属又は
アルカリ土類金属を負極活物質として用いる非水電解液
二次電池のサイクル寿命性能を向上させることができ、
その工業的価値は大である。As described above, the present invention can improve the cycle life performance of a nonaqueous electrolyte secondary battery using an alkali metal or an alkaline earth metal as a negative electrode active material,
Its industrial value is great.
【図１】サイクル数と容量との関係図である。FIG. 1 is a diagram showing the relationship between the number of cycles and capacity.
Claims (3)
極活物質として用いる非水電解液二次電池において、負
極活物質の支持体を金属単結晶から形成したことを特徴
とする二次電池。1. A non-aqueous electrolyte secondary battery using an alkali metal or an alkaline earth metal as a negative electrode active material, wherein a support for the negative electrode active material is formed from a metal single crystal.
ある請求項１記載の二次電池。2. The secondary battery according to claim 1, wherein the metal single crystal is a silicon single crystal.
１記載の二次電池。3. The secondary battery according to claim 1, wherein the negative electrode active material is lithium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3258374A JP2964732B2 (en) | 1991-09-09 | 1991-09-09 | Rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3258374A JP2964732B2 (en) | 1991-09-09 | 1991-09-09 | Rechargeable battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0574463A JPH0574463A (en) | 1993-03-26 |
| JP2964732B2 true JP2964732B2 (en) | 1999-10-18 |
Family
ID=17319363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3258374A Expired - Fee Related JP2964732B2 (en) | 1991-09-09 | 1991-09-09 | Rechargeable battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2964732B2 (en) |
Cited By (11)
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|---|---|---|---|---|
| EP2104175A2 (en) | 2008-03-17 | 2009-09-23 | Shin-Etsu Chemical Co., Ltd. | Non-aqueous electrolyte secondary battery, negative electrode material, and making method |
| EP2509139A1 (en) | 2011-04-08 | 2012-10-10 | Shin-Etsu Chemical Co., Ltd. | Method for manufacturing negative electrode active material for use in non-aqueous electrolyte secondary battery, negative electrode material for use in non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery |
| EP2590248A2 (en) | 2011-11-01 | 2013-05-08 | Shin-Etsu Chemical Co., Ltd. | Negative electrode active material for non-aqueous electrolyte secondary battery and method for manufacturing the same |
| WO2014073155A1 (en) | 2012-11-08 | 2014-05-15 | 信越化学工業株式会社 | Method for producing silicon-containing particles for anode active material for non-aqueous electrolyte secondary battery, anode member for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and silicon-containing particles for anode active material for non-aqueous electrolyte secondary battery |
| US8734991B2 (en) | 2007-11-12 | 2014-05-27 | Sanyo Electric Co., Ltd. | Negative electrode material for nonaqueous electrolyte secondary battery |
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| WO2015097990A1 (en) | 2013-12-25 | 2015-07-02 | 信越化学工業株式会社 | Negative electrode active material for nonaqueous electrolyte secondary batteries and method for producing same |
| US9099717B2 (en) | 2010-05-24 | 2015-08-04 | Shin-Etsu Chemical Co., Ltd. | Method for manufacturing negative electrode active material for non-aqueous electrolyte secondary battery, negative electrode active material for non-aqueous electrolyte secondary battery, negative electrode material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery |
| US9142858B2 (en) | 2008-08-26 | 2015-09-22 | Shin-Etsu Chemical Co., Ltd. | Non-aqueous electrolyte secondary battery, negative electrode, negative electrode material, and preparation of Si—O—Al composite |
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1991
- 1991-09-09 JP JP3258374A patent/JP2964732B2/en not_active Expired - Fee Related
Cited By (21)
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|---|---|---|---|---|
| US8734991B2 (en) | 2007-11-12 | 2014-05-27 | Sanyo Electric Co., Ltd. | Negative electrode material for nonaqueous electrolyte secondary battery |
| US8105718B2 (en) | 2008-03-17 | 2012-01-31 | Shin-Etsu Chemical Co., Ltd. | Non-aqueous electrolyte secondary battery, negative electrode material, and making method |
| EP2104175A2 (en) | 2008-03-17 | 2009-09-23 | Shin-Etsu Chemical Co., Ltd. | Non-aqueous electrolyte secondary battery, negative electrode material, and making method |
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| US9537142B2 (en) | 2010-05-24 | 2017-01-03 | Shin-Etsu Chemical Co., Ltd. | Method for manufacturing negative electrode active material for non-aqueous electrolyte secondary battery |
| US9099717B2 (en) | 2010-05-24 | 2015-08-04 | Shin-Etsu Chemical Co., Ltd. | Method for manufacturing negative electrode active material for non-aqueous electrolyte secondary battery, negative electrode active material for non-aqueous electrolyte secondary battery, negative electrode material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery |
| KR20120115116A (en) | 2011-04-08 | 2012-10-17 | 신에쓰 가가꾸 고교 가부시끼가이샤 | Method for producing cathode active material for nonaqueous electrolyte secondary battery, cathode material for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery |
| EP2509139A1 (en) | 2011-04-08 | 2012-10-10 | Shin-Etsu Chemical Co., Ltd. | Method for manufacturing negative electrode active material for use in non-aqueous electrolyte secondary battery, negative electrode material for use in non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery |
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| WO2014073155A1 (en) | 2012-11-08 | 2014-05-15 | 信越化学工業株式会社 | Method for producing silicon-containing particles for anode active material for non-aqueous electrolyte secondary battery, anode member for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and silicon-containing particles for anode active material for non-aqueous electrolyte secondary battery |
| KR20150125658A (en) | 2013-03-05 | 2015-11-09 | 신에쓰 가가꾸 고교 가부시끼가이샤 | Silicon-containing particles, negative electrode material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery |
| WO2014136368A1 (en) | 2013-03-05 | 2014-09-12 | 信越化学工業株式会社 | Silicon-containing particles, negative electrode material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery |
| US9837658B2 (en) | 2013-03-05 | 2017-12-05 | Shin-Etsu Chemical Co., Ltd. | Silicon-containing particle, negative-electrode material for use in non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery |
| US9972832B2 (en) | 2013-06-20 | 2018-05-15 | Shin-Etsu Chemical Co., Ltd. | Active material for nonaqueous electrolyte secondary battery, negative electrode form, and nonaqueous electrolyte secondary battery |
| KR20160101932A (en) | 2013-12-25 | 2016-08-26 | 신에쓰 가가꾸 고교 가부시끼가이샤 | Negative electrode active material for nonaqueous electrolyte secondary batteries and method for producing same |
| WO2015097990A1 (en) | 2013-12-25 | 2015-07-02 | 信越化学工業株式会社 | Negative electrode active material for nonaqueous electrolyte secondary batteries and method for producing same |
| US10050272B2 (en) | 2013-12-25 | 2018-08-14 | Shin-Etsu Chemical Co., Ltd. | Negative electrode active material for non-aqueous electolyte secondary battery and method of producing the same |
| EP3480875A1 (en) | 2013-12-25 | 2019-05-08 | Shin-Etsu Chemical Co., Ltd. | Negative electrode active material for nonaqueous electrolyte secondary batteries and method for producing same |
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| Publication number | Publication date |
|---|---|
| JPH0574463A (en) | 1993-03-26 |
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