公开(公告)号：EP2113960B1

公开(公告)日：2011-07-13

申请号：EP07831757.5

申请日：2007-11-13

申请人： Panasonic Corporation

发明人： HOJO, Nobuhiko c/o Panasonic Corporation I.P. Rights Operations Company ,  OHTSUKA, Yu c/o Panasonic Corporation I.P. Rights Operations Company ,  WATANABE, Shoichiro c/o Panasonic Corporation I.P. Rights Operations Company ,  HONDA, Kazuyoshi c/o Panasonic Corporation I.P. Rights Operations Company

IPC分类号： H01M10/052 ,  H01G9/058 ,  H01M4/02 ,  H01M4/38 ,  H01M4/48 ,  H01M4/58 ,  H01M4/60 ,  H01M4/70

CPC分类号： H01M10/0525 ,  H01G11/26 ,  H01G11/28 ,  H01G11/32 ,  H01G11/50 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/382 ,  H01M4/386 ,  H01M4/387 ,  H01M4/483 ,  H01M4/587 ,  H01M4/64 ,  H01M4/70 ,  H01M12/005 ,  H01M2004/021 ,  H01M2010/4292 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

摘要： Disclosed is an electricity storage device which can be charged/discharged at high rate and have high output, high capacity and excellent repeating charge/discharge characteristics, although it uses a non-carbon material as a negative electrode active material. Specifically disclosed is an electricity storage device comprising: a positive electrode collector; a positive electrode disposed on the positive electrode collector and including a positive electrode active material which can reversibly absorb/desorb at least anions; a negative electrode collector; and a negative electrode disposed on the negative electrode collector and including a negative electrode active material which can substantially absorb/desorb lithium ions reversibly. The negative electrode active material is composed of at least one substance selected from the group consisting of silicon, a silicon-containing alloy, a silicon compound, tin, a tin-containing alloy, and a tin compound; and the negative electrode is formed as a thin film having a thickness of 10 µm or less.