Abstract
A composite of bismuth and carboxymethyl cellulose (Bi@CMC) was successfully prepared and used as an additive in rechargeable Zn–Ni battery. The Bi@CMC composite combines the characters of electric conduction, hydrogen evolution reaction (HER) suppression and hydrophilicity, since hydrophilic carboxymethyl cellulose (CMC) fibers are coated by high-HER overpotential Bi particles. A Zn–Ni battery using an anode containing Bi@CMC demonstrated a higher coulombic efficiency and discharge capacity than pristine CMC. In addition, the rationality of the method which utilized the KOH/Zn(OH)42− electrolyte to alkaline rechargeable zinc-based batteries is discussed.
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