Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4766761 | Electrochimica Acta | 2017 | 14 Pages |
Abstract
The rate of oxygen reduction reaction becomes one of the most important restraining factors for the development of high-power density metal-air devices. The metal-free carbon catalyst which demonstrates lower cost and comparable electrocatalytic activity as with commercial Pt/C, which turns to be the most promising candidate for noble metal-based catalyst. Herein, a microporous and defective carbon material was synthesized by hydrothermal method and subsequently NH3 high-temperature treatment. The relatively high surface area and defect-rich features of the as-prepared carbon accelerate the oxygen reduction process, which fulfill highly efficient electrocatalytic activity with a high onset potential of â0.04Â V vs. Ag/AgCl and a limited current density of 6.5Â mAÂ cmâ2. When employed as cathode material for zinc/air batteries, high electrochemical performance with a discharge voltage of 1.1Â V at 50Â mAÂ cmâ2 was achieved.
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Authors
Mengran Wang, Xiaoke Lei, Langtao Hu, Peng Zhang, Hongxing Hu, Jing Fang,