Article ID Journal Published Year Pages File Type
4766761 Electrochimica Acta 2017 14 Pages PDF
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 −0.04 V vs. Ag/AgCl and a limited current density of 6.5 mA cm−2. When employed as cathode material for zinc/air batteries, high electrochemical performance with a discharge voltage of 1.1 V at 50 mA cm−2 was achieved.
Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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