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. 22, 2012
Filed:
Mar. 23, 2011
Feng Feng, San Diego, CA (US);
Jeffrey Phillips, La Jolla, CA (US);
Samaresh Mohanta, San Diego, CA (US);
Jeff Barton, San Diego, CA (US);
Zeiad M. Muntasser, San Diego, CA (US);
Feng Feng, San Diego, CA (US);
Jeffrey Phillips, La Jolla, CA (US);
Samaresh Mohanta, San Diego, CA (US);
Jeff Barton, San Diego, CA (US);
Zeiad M. Muntasser, San Diego, CA (US);
Powergenix Systems, Inc., La Jolla, CA (US);
Abstract
An improved Ni—Zn cell with a negative electrode substrate plated with tin or tin and zinc during manufacturing has a reduced gassing rate. The copper or brass substrate is electrolytic cleaned, activated, electroplated with a matte surface to a defined thickness range, pasted with zinc oxide electrochemically active material, and baked. The defined plating thickness range of 40-80 μIn maximizes formation of an intermetallic compound CuSn that helps to suppress the copper diffusion from under plating layer to the surface and eliminates formation of an intermetallic compound CuSnduring baking to provide adequate corrosion resistance during battery operation.