Article

Journal of Chemical Sciences

, Volume 118, Issue 1, pp 93-98

A low-cost lead-acid battery with high specific-energy

  • S. K. MarthaAffiliated withSolid State and Structural Chemistry Unit, Indian Institute of Science
  • , B. HariprakashAffiliated withSolid State and Structural Chemistry Unit, Indian Institute of Science
  • , S. A. GaffoorAffiliated withNED Energy Ltd
  • , D. C. TrivediAffiliated withCentral Electrochemical Research Institute
  • , A. K. ShuklaAffiliated withSolid State and Structural Chemistry Unit, Indian Institute of ScienceCentral Electrochemical Research Institute Email author 

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Abstract

Lightweight grids for lead-acid battery grids have been prepared from acrylonitrile butadiene styrene (ABS) copolymer followed by coating with lead. Subsequently, the grids have been electrochemically coated with a conductive and corrosion-resistant layer of polyaniline. These grids are about 75% lighter than those employed in conventional lead-acid batteries. Commercial-grade 6V/3.5Ah (C20-rate) lead-acid batteries have been assembled and characterized employing positive and negative plates constituting these grids. The specific energy of such a lead-acid battery is about 50 Wh/kg. The batteries can withstand fast charge-discharge duty cycles.

Keywords

Lead-acid battery specific energy polyaniline corrosion