Gopukumar, S. and Natarajan, S. and Thirunakaran, R. and Sakthivel, M. (2000) Performance of 2,4-dinitrophenol as a positive electrode in magnesium reserve batteries. Journal of Power Sources, 89. pp. 106-111. ISSN 0378-7753

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Abstract

Magnesium is an interesting anode battery material with many advantages such as its high standard potential of �y2.37 V., low cost and good low-temperature performance due to an exothermic corrosion reaction during discharge. Organic aromatic nitro compounds undergo multi-electron transfers of up to 18 during discharge, and hence, give high specific energies �up to 2 A hrg. in comparison with conventional inorganic battery depolarizers such as MnO2, HgO, CuO and AgO. Thus, it is worthwhile fabricating and studying the performance of a battery system combining magnesium and 2,4-dinitrophenol �DNP. using aqueous halide electrolytes like MgCl2, MgBr2 and Mg�ClO4.2.This paper describes the preparation of DNP cathodes after standardization of the cathode mixture. MgrDNP cells �1 V, 1 A h. have been assembled using the above cathode in conjunction with magnesium alloy �AZ 31. anodes and discharged at different current densities �1.7, 3.3, 5, 6.6 mArcm2. in 2 M MgCl2, MgBr2 and Mg�Cl04.2. Cyclic voltammograms of DNP have been recorded in 2 M Mg�ClO4.2 at various sweep rates and concentrations in order to understand the reduction behavior. The study suggests that DNP is a suitable organic compound for use as a positive electrode material in magnesium reserve batteries.

Item Type:	Article
Uncontrolled Keywords:	Magnesium; Organic cathodes; 2,4-Dinitrophenol; Reserve batteries
Subjects:	Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	28 Feb 2012 12:03
Last Modified:	28 Feb 2012 12:03
URI:	http://cecri.csircentral.net/id/eprint/1034

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