Manganese dioxide for lithium primary battery and method of producing the same
US5523073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1995 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Mar 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a method of producing manganese dioxide for a lithium primary battery, heat treatment for dehydrating water-containing manganese dioxide is carried out by continuously calcining the water-containing manganese dioxide at 440.degree. C. to 480.degree. C., preferably by controlling the flow rate of air introduced into the furnace to the value of from 20 to 2000 Nl per 1 kg water-containing manganese dioxide which is supplied into the furnace. According to this method, the residual bound water in the calcined manganese dioxide is reduced as compared those treated with a conventional method, and thus preservation property of a battery can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.