Journal
IONICS
Volume 21, Issue 3, Pages 791-799Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-014-1234-9
Keywords
EG sample; CG sample; Electrochemical deposition; Storage capacity
Funding
- Department of Science and Technology (DST), New Delhi [IF110749]
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In this study, chemically and electrochemically derived graphenes (CG and EG) were synthesized to form manganese dioxide (alpha-MnO2)/graphene nanocomposite cathode material for zinc primary cell. The discharge capacity of prepared nanocomposites was studied using Swagelok-type cell setup, where alpha-MnO2/graphene was used as a cathode and zinc as an anode along with an electrolyte (ZnCl2). Electrical conductivity and discharge behaviors of the CG and EG samples were studied in detail. The EG sample showed a high discharge capacity of 337 mAh g(-1), whereas the CG sample showed a discharge capacity of 205 mAh g (-1). More importantly, the discharge capacity of the EG sample-based cathode was 64 % higher than that of the CG sample-based cathode. The above observation suggests that EG sample serves as an effective cathode material for zinc-based primary battery applications.
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