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:
Mar. 22, 2022
Filed:
Apr. 02, 2019
Mitsubishi Chemical Corporation, Tokyo, JP;
Mu Ionic Solutions Corporation, Tokyo, JP;
Takashi Fujii, Inashiki-gun, JP;
Noriko Shima, Inashiki-gun, JP;
Youichi Ohashi, Inashiki-gun, JP;
Shinichi Kinoshita, Inashiki-gun, JP;
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
MU IONIC SOLUTIONS CORPORATION, Tokyo, JP;
Abstract
A non-aqueous liquid electrolyte secondary battery using negative-electrode active material having Si, Sn and/or Pb, with high charge-capacity, superior characteristics including discharge-capacity retention rate over long is provided. Its non-aqueous liquid electrolyte contains carbonate having unsaturated bond and/or halogen and compounds like LiPFand/or LiBF(first lithium salt) and lithium salt different from said first one, represented by formula below (second lithium salt).Li(αX)(In the formula, l, m and n represent integers of 1 to 10, 1 to 100 and 1 to 200, respectively. α represents boron, carbon, nitrogen, oxygen or phosphorus. Xrepresents functional group having atom selected from 14th to 17th groups of periodic table at its binding-position to α. Two or more of Xmay be connected to each other to form a ring structure. However, such a case where a is boron and Xis compound represented by(CHO)(CHO)is omitted (i and j represent integers of 2 or larger.).