Patent number: 9350018
Abstract: A secondary battery includes: a fiber negative electrode having a surface on which a negative electrode active material coating is formed, the coating containing a compound of AaMbXcZd; a fiber positive electrode including a positive electrode active material coating containing nickel hydroxide; an aqueous electrolyte solution; and a separator. The negative electrode coating has an uncoated surface. A is selected from the group consisting of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, and Ba; M is selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Ru, Pd, Ag, Ta, W, Pr, Sm, Eu, and Pb; X is selected from the group consisting of B, Al, Si, P, S, Ga, and Ge; Z is selected from the group consisting of O, S, N, F, Cl, Br, and I; and 0?a?6, 1?b?5, 0?c?4, 0<d?12, and 0?a/b?4.
Type:
Grant
Filed:
March 11, 2011
Date of Patent:
May 24, 2016
Assignees:
KAWASAKI JUKOGYO KABUSHIKI KAISHA, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventors:
Kazuo Tsutsumi, Kazuya Nishimura, Tomoaki Takasaki, Tetsuo Sakai, Jinhan Yao, Takashi Mukai
Patent number: 9070941
Abstract: [Object] The object is to provide a negative electrode material for a lithium secondary battery, wherein a sulfide-based negative electrode with water-resistant properties can exert excellent cycle characteristics and high output performance while maintaining a high discharge capacity and there is no precipitation of lithium dendrites during charge at low temperature. [Means for Solving Problems] A negative electrode material for a lithium secondary battery comprising sulfur and sulfide glass including the following components (i) and (ii): (i) at least one or more elements selected from a group consisting of Sb, As, Bi, Ge, Si, Cu, Zn, Pd, In and Zr; and (ii) at least one or more elements selected from a group consisting of Se, Te, Ga, Sn, Pb, Cd, Al, Fe, Mg, Ca, Co, Ag, Sr, P and Ba, wherein the ratio of the above components is sulfur: 40-80 mol %, (i): 1-50 mol % and (ii): 1-50 mol %, respectively.
Type:
Grant
Filed:
December 9, 2011
Date of Patent:
June 30, 2015
Assignees:
National Institute of Advanced Industrial Science and Technology, Isuzu Glass Company, Ltd.
Inventors:
Takashi Mukai, Taichi Sakamoto, Tetsuo Sakai, Kunihiko Tani, Naoto Yamashita, Koichiro Ikeda