公开(公告)号：US10374229B2

公开(公告)日：2019-08-06

申请号：US15553359

申请日：2016-02-17

申请人： NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY ,  NIPPON ELECTRIC GLASS CO., LTD.

发明人： Tsuyoshi Honma ,  Takayuki Komatsu ,  Satoshi Nakata ,  Hideo Yamauchi ,  Fumio Sato

IPC分类号： H01M4/38 ,  H01M4/131 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02 ,  H01M10/0525 ,  H01M10/48

摘要： A positive electrode active material for alkali-ion secondary batteries is provided which contains 20-55% of Na2O+Li2O, 10-60% of CrO+FeO+MnO+CoO+NiO, and 20-55% of P2O5+SiO2+B2O3 in terms of oxide-equivalent mol % and includes 50 mass % or more of an amorphous phase. According to the present invention, it is possible to provide a positive electrode active material for alkali-ion secondary batteries that enables high energy density and is excellent in the charge and discharge characteristics.

公开(公告)号：US10135068B2

公开(公告)日：2018-11-20

申请号：US14383646

申请日：2013-03-07

申请人： Nippon Electric Glass Co., Ltd.

发明人： Tsuyoshi Honma ,  Takayuki Komatsu ,  Junichi Ikejiri ,  Hideo Yamauchi

IPC分类号： H01M4/58 ,  C01B25/45 ,  C01B25/42 ,  H01M10/054 ,  H01M4/36 ,  H01M4/62

摘要： Provided are a cathode active material for a sodium ion secondary battery that is excellent in alkali ion diffusivity, structural stability, and cycle performance, and a synthesis method therefor. The cathode active material for a sodium ion secondary battery includes a melt-solidified body or oxide glass represented by the general formula NaxMyP2O7 (where M represents at least one or more kinds of transition metal elements selected from Cr, Fe, Mn, Co, and Ni, x satisfies a relationship of 1.20≤x≤2.10, and y satisfies a relationship of 0.95≤y≤1.60).