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- W2991769256 abstract "Environmentally friendly and inexpensive oxygen catalysts with high-efficient activity are paramount for powering zinc-air batteries. Here, cobalt oxide nanoparticles confined in nitrogen-doped graphene (CoO/NG) were produced as the oxygen reduction electrocatalyst for zinc-air batteries by hydrothermal and high-temperature calcination. During the hydrothermal process, the graphitic carbon nitride as the self-sacrificing template can be partially converted into a carbanion (CO32–) in the presence of cobalt-based ionic liquid ([N1444]Cl/CoCl2), which can generate cobalt carbonate (CoCO3) with Co2+. During the high-temperature calcination, CoCO3 is decomposed into CoO embedded into nitrogen-doped graphene and escaped CO2, which can increase specific surface areas of oxygen reduction electrocatalysts. The as-prepared CoO/NG shows not only abundant mesoporous structures but also large specific surface area. The CoO/NG exhibits outstanding oxygen reduction performance (E1/2 ≈ 0.830 V versus RHE). Additionally, the zinc-air battery manufactured by CoO/NG generates a specific capacity of 815.6 mA h g–1. It is verified that the CoO/NG catalyst as the air-cathode is promising in actual application of zinc-air batteries." @default.
- W2991769256 created "2019-12-13" @default.
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- W2991769256 date "2019-12-02" @default.
- W2991769256 modified "2023-10-17" @default.
- W2991769256 title "Cobalt Oxide Nanoparticles/Nitrogen-Doped Graphene as the Highly Efficient Oxygen Reduction Electrocatalyst for Rechargeable Zinc-Air Batteries" @default.
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- W2991769256 doi "https://doi.org/10.1021/acssuschemeng.9b05492" @default.
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