JP2016511521A - 半固体正極及び高エネルギー密度負極を有する非対称型電池 - Google Patents
半固体正極及び高エネルギー密度負極を有する非対称型電池 Download PDFInfo
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Abstract
Description
[0001] 本出願は、「Asymmetric Battery Having a Semi−solid Cathode and High Energy Density Anode」という名称で2013年3月15日に出願された米国仮出願第61/787372号の優先権及び利益を請求するものであり、同出願の開示内容全体は参照によりその全体が本明細書に組み込まれる。
[0066] いくつかの実施形態の正極140並びにいくつかの実施形態の負極150の半固体は、作用電極として動作する単一媒体内でイオン蓄積/イオン源、電子伝導体、及びイオン伝導体としてひとまとめに機能する物質を生成するための手段を提供する。
Claims (29)
- 正電極集電体と、
負電極集電体と、
前記正電極集電体と前記負電極集電体との間に配置されたイオン透過膜であって、
前記正電極集電体から第1の距離の間隔をおいて配置され、少なくとも部分的に正の電気活性ゾーンを規定し、
前記負電極集電体から第2の距離の間隔をおいて配置され、少なくとも部分的に負の電気活性ゾーンを規定し、前記第2の距離が前記第1の距離より小さい、イオン透過膜と、
前記正の電気活性ゾーン内に配置され、非水液体電解質内に活物質と導電物質の懸濁を含む、半固体正極と、
前記負の電気活性ゾーン内に配置された負極と、
を含む電気化学セル。 - 前記負極が、スズ、シリコン、アンチモン、アルミニウム、及び酸化チタンから選択された少なくとも1つの大容量負極物質を含む、
請求項1記載の電気化学セル。 - 前記第1の距離が少なくとも約250μmである、
請求項1記載の電気化学セル。 - 前記第1の距離が少なくとも約300μmである、
請求項3記載の電気化学セル。 - 前記第1の距離が少なくとも約350μmである、
請求項4記載の電気化学セル。 - 前記第1の距離が少なくとも約400μmである、
請求項5記載の電気化学セル。 - 前記第1の距離が約250μm〜約2000μmの範囲内である、
請求項1記載の電気化学セル。 - 前記第1の距離が約350μm〜約1000μmの範囲内である、
請求項7記載の電気化学セル。 - 前記第1の距離が約450μm〜約550μmの範囲内である、
請求項8記載の電気化学セル。 - 前記第1の距離が少なくとも約250μmであり、前記第2の距離が約70μm〜約120μmの範囲内である、
請求項1記載の電気化学セル。 - 前記第1の距離が少なくとも約400μmである、
請求項10記載の電気化学セル。 - 前記負極が非水液体電解質内に負極活物質の懸濁を含む、
請求項1記載の電気化学セル。 - 非水液体電解質内に活物質と導電物質の懸濁を含む半固体正極であって、約150mAh/g〜約200mAh/gの容量と約250μm〜約2000μmの範囲内の厚さを有する半固体正極と、
約700mAh/g〜約1200mAh/gの範囲内の容量と約30μm〜約600μmの範囲内の厚さを有する負極と、
前記負極と前記半固体正極との間に配置されたセパレータと、
を含む電気化学セル。 - 前記負極が、スズ、シリコン、アンチモン、アルミニウム、及び酸化チタンから選択されたリチウム合金形成化合物を含む、
請求項13記載の電気化学セル。 - 前記リチウム合金形成化合物がシリコンである、
請求項14記載の電気化学セル。 - 前記リチウム合金形成化合物がスズである、
請求項14記載の電気化学セル。 - 前記正極の前記厚さが前記負極の前記厚さの約3倍〜約6倍の範囲内である、
請求項13記載の電気化学セル。 - 前記負極が非水液体電解質内に負極活物質の懸濁を含む半固体負極である、
請求項13記載の電気化学セル。 - 負極と、
重量で約60%〜約80%の活物質と、重量で約1%〜約6%の導電物質と、重量で約20%〜約40%の非水液体電解質とを含む半固体正極物質と、
前記負極と前記半固体正極との間に配置されたセパレータと、
を含み、
前記正極の厚さが前記負極の厚さの少なくとも約2倍である、
電気化学セル。 - 前記正極の前記厚さが前記負極の前記厚さの少なくとも約3倍である、
請求項19記載の電気化学セル。 - 前記正極の前記厚さが前記負極の前記厚さの少なくとも約4倍である、
請求項20記載の電気化学セル。 - 前記正極の前記厚さが前記負極の前記厚さの少なくとも約5倍である、
請求項21記載の電気化学セル。 - 前記負極が負電極集電体上に形成された固体負極である、
請求項19記載の電気化学セル。 - 前記負極が、体積で約50%〜約75%の炭素質活物質と、体積で約1%〜約10%の高エネルギー容量負極物質と、体積で約0.5%〜約2%の導電物質と、体積で約20%〜約40%の非水液体電解質とを含む半固体負極である、
請求項19記載の電気化学セル。 - 前記大容量負極物質が、スズ、シリコン、アンチモン、アルミニウム、及び酸化チタンから選択された少なくとも1つの大容量負極物質を含む、
請求項24記載の電気化学セル。 - 重量で約60%〜約80%の活物質と、重量で約1%〜約6%の導電物質と、重量で約20%〜約40%の非水液体電解質とを含む半固体正極であって、約250μm〜約2000μmの範囲内の厚さを有する半固体正極と、
高電荷容量物質を含み、約700mAh/g〜約1200mAh/gの範囲内の全体的な容量を有する負極であって、前記正極の前記厚さの約20%〜約25%の範囲内の厚さを有する負極と、
前記負極と前記半固体正極との間に配置されたセパレータと、
を含む電気化学セル。 - 前記正極が約300μm〜約600μmの範囲内の厚さを有する、
請求項26記載の電気化学セル。 - 前記負極が約60μm〜約150μmの範囲内の厚さを有する、
請求項26記載の電気化学セル。 - 前記大容量物質が、スズ、シリコン、アンチモン、アルミニウム、及び酸化チタンから選択された少なくとも1つの物質を含む、
請求項26記載の電気化学セル。
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