教师拼音名称:chenyingjie
电子邮箱:
毕业院校:中国科学院海洋研究所
学科:材料学
2018-10-09 我最喜爱的老师
2019-09-13 校级优秀班主任
最后更新时间:..
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
是否译文:否