首页> 外文期刊>International Journal of Electrochemical Science >Hierarchical porous Nickel Cobaltate Nanotube as Electrocatalyst for Lithium-Oxygen Batteries
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Hierarchical porous Nickel Cobaltate Nanotube as Electrocatalyst for Lithium-Oxygen Batteries

机译:等级多孔镍钴酸盐作为锂氧电池的电催化剂

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Binary metal oxides are considered as effective catalysts owing to their excellent oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) activity. In this report, NiCo2O4 nanotube with hierarchical porous structure is synthesized through a hydrothermal method and following annealing. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show its morphology of nanotube and subunit of nanoflake. BET N2 adsorption-desorption test shows a high specific surface area of 129.03 m2 g-1 and hierarchical pores ranging 2-5 nm. When used as lithium- oxygen batteries electrocatalyst, it evidently reduces overpotential (2.64/3.92 V) and improves the specific capacity (1979 mAh g-1) and cycle life (42 cycles) of the cell.
机译:由于其优异的氧气进化反应(Oer)和氧还原反应(ORR)活性,二元金属氧化物被认为是有效的催化剂。在本报告中,通过水热法和退火合成具有分层多孔结构的NicO2O4纳米管。扫描电子显微镜(SEM)和透射电子显微镜(TEM)显示其纳米管和纳米叶片亚单位的形貌。 BET N2吸附 - 解吸试验显示出129.03m 2 G-1的高比表面积和等级孔径为2-5nm。当用作锂氧气电池电池电气催化剂时,它显然减少了过势(2.64 / 3.92V),并改善了细胞的特定容量(1979mAhg-1)和循环寿命(42次循环)。

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