| Hierarchically porous N-doped carbon derived from biomass as oxygen reduction electrocatalyst for high-performance Al–air battery |
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| 作者姓名： | Yanqiu Wang Jiayu Hao Jiawen Yu Hongjian Yu Keke Wang Xuetao Yang Jie Li Wenzhang Li |
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| 作者单位： | School of Chemistry and Chemical Engineering;Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources |
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| 基金项目： | supported in China by the National Natural Science Foundation of China(No.51474255);the Hunan Provincial Science and Technology Plan Project,China(No.2016TP1007);the Open Sharing Fund for the Large-scale Instruments and Equipments of Central South University(CSUZC201932)。 |
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| 摘 要： | Developing large-scale and highly efficient oxygen reduction reaction(ORR)catalysts acts a vital role in realizing wide application of metal–air batteries.Here,we propose a gas-foaming strategy to fabricate sustainable and 3D hierarchically porous N-doped carbon with high specific surface area and abundant defects sites derived from biomass.The obtained catalyst exhibits prominent ORR property with higher half-wave potential(0.861 V)and slightly lower kinetic current density(32.44 m A cm^-2),compared to Pt/C(0.856 V and 43.61 m A cm^-1).Furthermore,employing it as catalyst of air cathode,the Al–air battery delivers remarkable discharge performance with excellent power density of 401 m W cm^-2,distinguished energy density of 2453.4 Wh kg^-1 and extremely high open-circuit voltage of 1.85 V among the reported metal–air batteries in the literatures.This gas-foaming strategy for full utilization of biomass affords a chance to explore scalable advanced catalysts in metal–air battery.
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| 关 键 词： | Gas-foaming strategy BIOMASS Hierarchically POROUS structure Oxygen reduction reaction Al–air battery |
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