Accession Number:

ADA199885

Title:

An Investigation of the Rechargeability of Certain Modified Forms of MnO2

Descriptive Note:

Final rept.

Corporate Author:

EMENTECK INC COLLEGE STATION TX

Personal Author(s):

Report Date:

1988-09-01

Pagination or Media Count:

29.0

Abstract:

The modified form of MnO2 prepared through doping with bismuth or lead possesses rechargeable properties. The work performed under this project was to investigate these properties. The bismuth modified MnO2 designated as MnO2 was prepared by coprecipitation of hydroxides from the aqueous solutions of nitrates of Mn and Bi and subsequent oxidation of the hydroxides to the MnO2. Preliminary investigations of the Zn-MnO2 system in the presence of selected membranes were aimed at determining ways to prevent migration of the soluble zincate anion to the MnO2 electrode. Selected membranes and additives were tested. An improvement in the cyclability of the MnO2 electrode was achieved under certain circumstances. Extensive testings of the Zn-MnO2 systems are needed. Manganese dioxide Zinc Bismuth Lead.

Subject Categories:

  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE