Journal
SMALL
Volume 14, Issue 20, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201800737
Keywords
carbon nanofibers; electrocatalysis; oxygen evolution reaction; oxygen reduction reaction; zinc-air battery
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Funding
- National Natural Science Foundation of China [51302079]
- National Natural Science Foundation of Hunan Province [2017JJ1008]
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Zinc-air batteries with high-density energy are promising energy storage devices for the next generation of energy storage technologies. However, the battery performance is highly dependent on the efficiency of oxygen electrocatalyst in the air electrode. Herein, the N, F, and B ternary doped carbon fibers (TD-CFs) are prepared and exhibited higher catalytic properties via the efficient 4e(-) transfer mechanism for oxygen reduction in comparison with the single nitrogen doped CFs. More importantly, the primary and rechargeable Zn-air batteries using TD-CFs as air-cathode catalysts are constructed. When compared to batteries with Pt/C + RuO2 and Vulcan XC-72 carbon black catalysts, the TD-CFs catalyzed batteries exhibit remarkable battery reversibility and stability over long charging/discharging cycles.
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