Patent · US Expired

Metal-alkaline battery cells with reduced corrosion rates

US6544686B1 · kind B1 · utility

2Cited by

5References

25Claims

0Family size

Assignee

Electric Fuel Limited · IL

Inventors

Yair Ein-Eli · Waltham, US
Chen Menachem · Holon, IL
Yuli Zingerman · Bet Shemesh, IL

Key dates

Filing date	Nov 22, 2000
Grant date	Apr 8, 2003
Priority date	—
Expiry date	Mar 4, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A metal-alkaline battery having a reduced corrosion rate and enhanced electrochemical properties comprises an anode that includes derivatives of polyethylene glycol (PEG). The PEG derivatives have one or more hydrophilic moieties attached to the ends of the PEG chain. The hydrophilic moieties may be a carboxyl group or a carboxymethyl group. A preferred PEG derivative is polyethylene glycol, bi-carboxy methyl ether (PEG BCME).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.