The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2014
Filed:
Jul. 24, 2009
Cewen Nan, Beijing, CN;
AO Mei, Beijing, CN;
Yuchuan Feng, Beijing, CN;
Lin Yuanhua, Beijing, CN;
Yoshitaka Minamida, Susono, JP;
Shoji Yokoishi, Mishima, JP;
Cewen Nan, Beijing, CN;
Ao Mei, Beijing, CN;
Yuchuan Feng, Beijing, CN;
Lin Yuanhua, Beijing, CN;
Yoshitaka Minamida, Susono, JP;
Shoji Yokoishi, Mishima, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Tsinghua University, Beijing, CN;
Abstract
The invention relates to a lithium lanthanum titanate composite solid electrolyte material containing silicon in which amorphous Si or an amorphous Si compound exist in a grain boundary between crystal grains, and a method of producing the same, and belongs to a field of a lithium ion battery. According to the invention, the amorphous Si or the amorphous Si compound exist in the grain boundary between the crystal grains of the lithium lanthanum titanate. The amorphous Si or the amorphous Si compound are introduced into the grain boundary by employing a wet chemical method. In the wet chemical method, the inexpensive organosilicon compound is used as an additive, and the organosilicon compound is added into the lithium lanthanum titanate solid electrolyte material. Thus, it is possible to synthesize the lithium lanthanum titanate composite solid electrolyte material containing silicon by performing sintering when the ratio of mass of the Si or mass of the Si calculated based on mass of the Si compound to mass of the lithium lanthanum titanate is 0.27% to 1.35%.