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:
Aug. 07, 2018
Filed:
Oct. 10, 2016
Seeo, Inc., Hayward, CA (US);
Robert Bosch Gmbh, Stuttgart, DE;
Hany Basam Eitouni, Oakland, CA (US);
Xiao-Liang Wang, San Leandro, CA (US);
Russell Clayton Pratt, San Mateo, CA (US);
Scott Allen Mullin, San Leandro, CA (US);
Kulandaivelu Sivanandan, Fremont, CA (US);
Jean Fanous, Stuttgart, DE;
Seeo, Inc., Hayward, CA (US);
Abstract
In a solid-state lithium-metal/sulfur-based battery cell, barriers to sulfur and polysulfide diffusion are included in or used as an ionically conductive electrolyte in the cathode or separator layers. During operation of the battery, the barrier materials are positioned to either 1) rapidly react with any free sulfur or lithium polysulfide species that are generated, forming stable carbon-sulfur bond(s) and preventing further migration of the sulfur or polysulfide species or 2) prevent the formation and diffusion of elemental sulfur or free lithium polysulfide species. Regardless of the identity of the sulfur/polysulfide species, the sulfur-containing species is prevented from diffusing to the anode and causing capacity fade and higher internal resistance to ion flow.