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:
May. 14, 2019
Filed:
Jun. 23, 2011
Kazuaki Matsumoto, Tokyo, JP;
Daisuke Kawasaki, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
Midori Shimura, Tokyo, JP;
Yoko Hashizume, Tokyo, JP;
Kazuaki Matsumoto, Tokyo, JP;
Daisuke Kawasaki, Tokyo, JP;
Masahiro Suguro, Tokyo, JP;
Midori Shimura, Tokyo, JP;
Yoko Hashizume, Tokyo, JP;
NEC CORPORATION, Minato-ku, Tokyo, JP;
Abstract
An exemplary embodiment of the present invention is a secondary battery which comprises a negative electrode and a battery electrolyte liquid comprising a supporting salt and a non-aqueous electrolyte solvent; wherein the negative electrode is obtained by pre-forming a SEI coating film on a negative electrode structure which is formed by binding a negative electrode active substance comprising a metal (a). that can be alloyed with lithium, a metal oxide (b) that can absorb and desorb lithium ion and a carbon material (c) that can absorb and desorb lithium ion, to a negative electrode current collector with a negative electrode binder, and wherein the non-aqueous electrolyte solvent contains at least an ionic liquid.