JP2009259695A - リチウムイオン二次電池の充電制御方法 - Google Patents
リチウムイオン二次電池の充電制御方法 Download PDFInfo
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- JP2009259695A JP2009259695A JP2008109197A JP2008109197A JP2009259695A JP 2009259695 A JP2009259695 A JP 2009259695A JP 2008109197 A JP2008109197 A JP 2008109197A JP 2008109197 A JP2008109197 A JP 2008109197A JP 2009259695 A JP2009259695 A JP 2009259695A
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- 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
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Abstract
【解決手段】リチウムと合金化可能なシリコンを活物質とし、特定の構造を有するアルコキシシリル基含有樹脂をバインダー樹脂とする負極を有するリチウムイオン二次電池の充電制御方法であって、負極の充電容量を前記リチウムの合金化による前記シリコンの体積変化が該シリコン単体の体積の2.5倍以下である範囲で使用する、もしくは充電容量がシリコンの理論容量比0.3以下となるように制御することを特徴とする。
【選択図】なし
Description
リチウムイオン二次電池には、正極の活物質として主にリチウムコバルト複合酸化物等のリチウム含有金属複合酸化物が用いられ、負極の活物質としてはリチウムイオンの層間への挿入(リチウム層間化合物の形成)及び層間からのリチウムイオンの放出が可能な多層構造を有する炭素材料が主に用いられている。正、負極の極板は、これらの活物質とバインダー樹脂とを溶剤に分散させてスラリーとしたものを集電体である金属箔上に両面塗布し、溶剤を乾燥除去して合剤層を形成後、これをロールプレス機で圧縮成形して作製されている。
ここで示した反応が更に促進されると最終的にM(OH)xとなり、ここで生成した2分子の水酸化物間で縮重合反応がおこると下記式(B)のように反応する。
この時全てのOH基は重縮合することが可能であり、また末端にOH基を持つ有機高分子とも脱水縮重合反応することが可能である。
Li12Si7の理論容量は1636mAh/g、シリコンに対する体積膨張は2.9倍、Li14Si6の理論容量は2227mAh/g、シリコンに対する体積膨張は2.6倍、Li13Si4の理論容量は3102mAh/g、シリコンに対する体積膨張は3.4倍、Li22Si5の理論容量は4199mAh/g、シリコンに対する体積膨張は4.1倍である。つまりシリコンの理論容量まで充電を行うと体積は元のシリコンに対して4.1倍まで膨張する。
活物質としてSiの粉末を用いた。Si粉末として粒子径4μm以下のSi粒子(高純度化学製)をそのまま使用した。
上記した電極を評価極とし、金属リチウムを対極として、1モルのLiPF6/エチレンカ−ボネ−ト(EC)+ジエチルカ−ボネ−ト(DEC)(EC:DEC=1:1(体積比))溶液を電解液として、ドライルーム内でコイン型モデル電池(CR2032タイプ)を作製した。コイン型モデル電池は、スペーサー、対極となる厚み500μmのLi箔、セパレーター(セルガード社製 商標名Celgard #2400)、及び評価極を順に重ね、かしめ加工して作製した。
このモデル電池における評価極の評価を次の方法で行った。
Claims (4)
- 前記シリコンの単位重量あたりの充電容量を1200mAh/g以下に制御する請求項1に記載のリチウムイオン二次電池の充電制御方法。
- 前記シリコンの単位重量あたりの充電容量を1200mAh/g以下に制御する請求項3に記載のリチウムイオン二次電池の充電制御方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008109197A JP5136180B2 (ja) | 2008-04-18 | 2008-04-18 | リチウムイオン二次電池の充電制御方法 |
PCT/JP2009/055183 WO2009128319A1 (ja) | 2008-04-18 | 2009-03-17 | リチウムイオン二次電池用負極とその製造方法 |
KR1020107022555A KR101227834B1 (ko) | 2008-04-18 | 2009-03-17 | 리튬 이온 2차 전지용 부극, 그의 제조 방법 및 충전 제어 방법, 및 2차 전지용 전극, 및 비수계 2차 전지 |
KR1020127022361A KR101193525B1 (ko) | 2008-04-18 | 2009-03-17 | 2차 전지용 전극 및 비수계 2차 전지 |
EP09733655.6A EP2267824B1 (en) | 2008-04-18 | 2009-03-17 | Negative electrode for lithium-ion secondary battery and manufacturing process for the same |
CN200980113595.9A CN102007627B (zh) | 2008-04-18 | 2009-03-17 | 锂离子二次电池用负极及其制造方法 |
US12/988,491 US20110031935A1 (en) | 2008-04-18 | 2009-03-17 | Negative electrode for lithium-ion secondary battery and manufacturing process for the same |
US13/873,881 US20130244110A1 (en) | 2008-04-18 | 2013-04-30 | Negative electrode for lithium-ion secondary battery and manufacturing process for the same |
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JP2008109197A JP5136180B2 (ja) | 2008-04-18 | 2008-04-18 | リチウムイオン二次電池の充電制御方法 |
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JP2009259695A true JP2009259695A (ja) | 2009-11-05 |
JP5136180B2 JP5136180B2 (ja) | 2013-02-06 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2449428C1 (ru) * | 2010-10-18 | 2012-04-27 | Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" | СПОСОБ ЗАРЯДА КОМПЛЕКТА ИЗ "n" ЛИТИЙ-ИОННЫХ АККУМУЛЯТОРНЫХ БАТАРЕЙ В СОСТАВЕ ГЕОСТАЦИОНАРНОГО ИСКУССТВЕННОГО СПУТНИКА ЗЕМЛИ |
WO2014038205A1 (ja) * | 2012-09-10 | 2014-03-13 | 株式会社豊田自動織機 | リチウムイオン二次電池用負極及びリチウムイオン二次電池 |
JP2014086218A (ja) * | 2012-10-22 | 2014-05-12 | Toyota Motor Corp | 全固体電池システム |
JP2015216001A (ja) * | 2014-05-09 | 2015-12-03 | 国立大学法人岩手大学 | 蓄電素子 |
JP2017022141A (ja) * | 2016-10-31 | 2017-01-26 | 株式会社半導体エネルギー研究所 | 活物質の作製方法 |
US10658661B2 (en) | 2011-08-30 | 2020-05-19 | Semiconductor Energy Laboratory Co., Ltd. | Power storage device and method for manufacturing electrode |
KR102424725B1 (ko) * | 2021-11-11 | 2022-07-22 | 한국세라믹기술원 | 수명 특성 및 용량을 향상시킨 리튬이차전지용 실리콘계 음극 및 이를 포함하는 리튬이차전지 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5128873B2 (ja) * | 2007-08-10 | 2013-01-23 | 株式会社豊田自動織機 | 二次電池用電極及びその製造方法 |
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JP2003171180A (ja) * | 2001-12-03 | 2003-06-17 | Shin Etsu Chem Co Ltd | C/Si/O複合材料の製造方法 |
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Patent Citations (4)
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JP2003171180A (ja) * | 2001-12-03 | 2003-06-17 | Shin Etsu Chem Co Ltd | C/Si/O複合材料の製造方法 |
JP2005235734A (ja) * | 2004-01-20 | 2005-09-02 | Sony Corp | 電池およびその充放電方法、並びにその充放電制御素子 |
JP2005310759A (ja) * | 2004-03-26 | 2005-11-04 | Shin Etsu Chem Co Ltd | 珪素複合体粒子及びその製造方法並びに非水電解質二次電池用負極材 |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2449428C1 (ru) * | 2010-10-18 | 2012-04-27 | Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнёва" | СПОСОБ ЗАРЯДА КОМПЛЕКТА ИЗ "n" ЛИТИЙ-ИОННЫХ АККУМУЛЯТОРНЫХ БАТАРЕЙ В СОСТАВЕ ГЕОСТАЦИОНАРНОГО ИСКУССТВЕННОГО СПУТНИКА ЗЕМЛИ |
US10658661B2 (en) | 2011-08-30 | 2020-05-19 | Semiconductor Energy Laboratory Co., Ltd. | Power storage device and method for manufacturing electrode |
WO2014038205A1 (ja) * | 2012-09-10 | 2014-03-13 | 株式会社豊田自動織機 | リチウムイオン二次電池用負極及びリチウムイオン二次電池 |
JP2014053226A (ja) * | 2012-09-10 | 2014-03-20 | Toyota Industries Corp | リチウムイオン二次電池用負極及びリチウムイオン二次電池 |
JP2014086218A (ja) * | 2012-10-22 | 2014-05-12 | Toyota Motor Corp | 全固体電池システム |
JP2015216001A (ja) * | 2014-05-09 | 2015-12-03 | 国立大学法人岩手大学 | 蓄電素子 |
JP2017022141A (ja) * | 2016-10-31 | 2017-01-26 | 株式会社半導体エネルギー研究所 | 活物質の作製方法 |
KR102424725B1 (ko) * | 2021-11-11 | 2022-07-22 | 한국세라믹기술원 | 수명 특성 및 용량을 향상시킨 리튬이차전지용 실리콘계 음극 및 이를 포함하는 리튬이차전지 |
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