Manganese dioxide for alkaline cells
US6863876B2 · kind B2 · utility
3Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2002 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Mar 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Particulate MnO2, having simultaneously a micropore surface area greater than 8.0 m2/g, desirably between about 8.0 and 13 m2/g and BET surface area of between about 20 and 31 m2/g within the context of an MnO2 having a total intraparticle porosity of between about 0.035 cm3/g and 0.06 cm3/g produces enhanced performance when employed as cathode active material in an electrochemical cell, particularly an alkaline cell. The average pore radius of the meso and macro pores within the MnO2 (meso-macro pore radius) is desirably greater than 32 Angstrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.