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.:

US 7713661 B1

PDF
Full Text
Expired
Date of Patent:
May. 11, 2010

Filed:

Jan. 20, 2006
Applicant:

Zhijian Zhu, Shenzhen, CN;

Inventor:

Zhijian Zhu, Shenzhen, CN;

Assignee:

BYD Company Limited, Shenzhen, CN;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 (2006.01); H01M 4/62 (2006.01); H01M 4/48 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention relates to negative electrode for zinc nickel secondary batteries and the fabrication methods. These negative electrodes contain hydrophobic porous conductive granules such as carbon black granules with a hydrophobic material adsorbed. The fabrication methods for these negative electrodes include the following steps: adding a hydrophobic material to conductive porous granules such as granules in an aqueous solution; stirring the aqueous solution with the conductive porous granules and the hydrophobic material; fabricating the active material with the aqueous solution with the conductive porous granules and the hydrophobic material; and forming the negative electrode with the active material. Batteries with negative electrodes that are embodiments of this invention or are fabricated by the method of this invention are efficient in the recombination of oxygen at the electrodes during charging have low internal pressure, and are not subjected to electrolyte leakage.


Find Patent Forward Citations

Zhu, Zhijian. (2010). Negative electrodes for zinc nickel secondary batteries and their fabrication methods (U.S. Patent No. 7713661). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7713661

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