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We present the development of flexible secondary alkaline battery with
rechargeability similar to that of conventional secondary alkaline
batteries. Multiwalled carbon nanotubes (MWCNTs) were added to both
electrodes to reduce internal resistance, and a cathode containing carbon
black and purified MWCNTs was found to be most effective. A polyvinyl
alcohol-poly (acrylic acid) copolymer separator served the dual functions
of electrolyte storage and enhancing flexibility. Additives to the anode
and cathode were effective in reducing capacity fades and improving
rechargeability.
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