Accession Number : AD0851893

Title :   Electrode-Electrolyte Interactions Magnesium Anodes : : Meta-Dinitrobenzene Cathodes.

Descriptive Note : Semi-annual rept. no. 1, 1 Dec 67-30 Jun 68,

Corporate Author : NEW YORK UNIV BRONX DEPT OF CHEMICAL ENGINEERING

Personal Author(s) : Wikstrom, Leonard Lee

Report Date : OCT 1968

Pagination or Media Count : 44

Abstract : The electrochemical dissolution of magnesium (99.97% Mg and AZ-21 Magnesium alloy); h.e.r. on magnesium; electrochemical reduction of nitrobenzene, nitrosobenzene, phenylhydroxylamine, and meta-dinitrobenzene; and the electrochemical oxidation of nitrobenzene and phenylhydroxylamine in Mg(ClO4)2, NH4ClO4, (NH4)2HPO4, and NH4ClO4--(NH4)2 HPO4 have been investigated. The data indicate that the open circuit potential of magnesium in these electrolytes is determined by the mixed process of hydrogen evolution and magnesium dissolution. A-size Mg/2M(Mg(ClO4)2 sat. with Mg(OH)2/-Chloro-2,4-dinitrobenzene, Mg/Sat. NH4ClO4--(NH4)2HPO4/meta-dinitrobenzene and Mg/O.1OM NH4ClO4-O.45M (NH4)2HPO4/meta-dinitrobenzene cells were fabricated. The magnesium perchlorate electrolyte-1-chloro-2,4-dinitrobenzene cell yielded very promising results. An open circuit voltage of 1.4 -1.6 volts and an energy density of 30 w-h/lb were obtained. The other cells were unsatisfactory. From the electrochemical data and the results of the fabricated cells it appeared that the meta-dinitrobenzene cathode material must be electrochemically reduced from the solvated state. (Author)

Descriptors :   *ANODES(ELECTROLYTIC CELL)), (*PRIMARY BATTERIES, ELECTRODES), (*MAGNESIUM, (*NITROBENZENES, CATHODES(ELECTROLYTIC CELL)), ELECTROCHEMISTRY, ELECTROLYTES, PERCHLORATES, MAGNESIUM COMPOUNDS, AMMONIUM PERCHLORATE, PHOSPHORIC ACIDS.

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE