期刊
CATALYSTS
卷 10, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/catal10010064
关键词
manganese oxide; sucrose; sugar; Zn-air battery; electrocatalyst
资金
- Research, Community Service and Innovation Program (P3MI) Institut Teknologi Bandung
Despite its commercial success as a primary battery, Zn-air battery is struggling to sustain a reasonable cycling performance mainly because of the lack of robust bifunctional electrocatalysts which smoothen the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) taking place on its air-cathode. Composites of carbon/manganese oxide have emerged as a potential solution with high catalytic performance; however, the use of non-renewable carbon sources with tedious and non-scalable synthetic methods notably compromised the merit of being low cost. In this work, high quantity of carbon is produced from renewable source of readily available table sugar by a facile room temperature dehydration process, on which manganese oxide nanorods are grown to yield an electrocatalyst of MnOx@AC-S with high oxygen bifunctional catalytic activities. A Zn-air battery with the MnOx@AC-S composite catalyst in its air-cathode delivers a peak power density of 116 mW cm(-2) and relatively stable cycling performance over 215 discharge and charge cycles. With decent performance and high synthetic yield achieved for the MnOx@AC-S catalyst form a renewable source, this research sheds light on the advancement of low-cost yet efficient electrocatalyst for the industrialization of rechargeable Zn-air battery.
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