公开(公告)号：US10756342B2

公开(公告)日：2020-08-25

申请号：US14966386

申请日：2015-12-11

申请人： Envision AESC Japan Ltd.

发明人： Sohei Suga ,  Koichi Shinohara ,  Kenji Ohara ,  Toshihiro Horiuchi ,  Masanori Aoyagi ,  Junko Nishiyama

IPC分类号： H01M4/505 ,  H01M4/36 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525

摘要： A lithium ion secondary battery includes: a negative electrode having a carbon-based negative electrode material containing graphite particles and amorphous carbon particles; and a positive electrode including a lithium composite oxide. The lithium composite oxide is represented by a general formula: LixNiyMnzCo(1-y-z)O2, where x is a numeral of 1 or more and 1.2 or less, and y and z are positive numerals satisfying the relation of y+z

公开(公告)号：US10714787B2

公开(公告)日：2020-07-14

申请号：US15045316

申请日：2016-02-17

申请人： Envision AESC Japan Ltd.

发明人： Sohei Suga ,  Koichi Shinohara ,  Kenji Ohara ,  Toshihiro Horiuchi ,  Masanori Aoyagi ,  Junko Nishiyama

IPC分类号： H01M10/0525 ,  H01M2/30 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0585 ,  H01M4/02

摘要： Provided is a lithium ion secondary battery including a power generating element that includes at least one positive electrode plate, at least one negative electrode plate, and at least one separator. A ratio B/A (mΩcm) of volume resistivity B (mΩcm3) of the power generating element to an area A (cm2) per one positive electrode plate is 0.4 or more and less than 0.9.