Mercury-free zinc anode for electromechanical cell and method for making same
US6221530A · kind A · utility
5Cited by
35References
55Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 23, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Nov 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12792
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An anode for use in an electrochemical cell comprises a plate of non-particulate, mercury-free zinc metal and a coating of indium metal on at least a portion of the zinc plate surface. The anode is particularly useful in a rechargeable metal-air cell. The elimination of mercury enhances the safety of the cell and the indium coating reduces gassing at the anode and corrosion of the anode. Desirably, the electrolyte in the metal air cell also includes indium hydroxide. Also, a method for making the anode using a hot-plate joining process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.