青岛科技大学  English 
陈英杰
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教师拼音名称:chenyingjie

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毕业院校:中国科学院海洋研究所

学科:

材料学

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2018-10-09 我最喜爱的老师

2019-09-13 校级优秀班主任

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N, S, P-Codoped Graphene-Supported Ag-MnFe2O4 Heterojunction Nanoparticles as Bifunctional Oxygen Electrocatalyst with High Efficiency

关键字:METAL-FREE ELECTROCATALYSTS; NITROGEN-DOPED GRAPHENE; SELECTIVE OXIDATION; FREE CATALYST; REDUCTION; CO; SULFUR; PHOSPHORUS; PERFORMANCE; CATHODES

摘要:Due to slow kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) during discharging and charging processes, it is essential to rationally design and synthesize non-precious metal bifunctional electrocatalysts with good performance for metal-air batteries. Herein, Ag-MnFe2O4 heterojunction nanoparticles supported on N, S, P-codoped graphene (NSPG) are developed with enhanced ORR and OER bifunctional electrocatalytic activities and stability. In contrast, S, P-doped graphene (SPG) and N, P-doped graphene (NPG) show less stabilization for the heterojunction particles. For example, under alkaline conditions, the ORR half-wave potential of Ag-MnFe2O4/NSPG can reach 0.831 V, and the over potential for OER is 0.56 V at the current density 10 mA center dot cm(-2). Furthermore, Ag-MnFe2O4/NSPG shows better methanol resistance and durability than Pt/C catalysts.

卷号:11

期号:12

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