Hierarchical porous Nickel Cobaltate Nanotube as Electrocatalyst for Lithium-Oxygen Batteries

被引：5

作者：

Chen, Xiang ^{[1
]}

Kuang, Peng ^{[3
]}

Chen, Chunguang ^{[2
]}

Zhang, Xiuhui ^{[2
]}

Huang, Tao ^{[1
]}

Zhang, Lijuan ^{[1
]}

Yu, Aishui ^{[1
,2
]}

机构：

[1] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Collaborat Innovat Ctr Chem Energy Mat, Lab Adv Mat,Inst New Energy, Shanghai 200433, Peoples R China

[2] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Collaborat Innovat Ctr Chem Energy Mat, Dept Chem,Inst New Energy, Shanghai 200433, Peoples R China

[3] BYD Co Limited, Div 2, 999 Xiang Jing Rd, Shanghai, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2018年 / 13卷 / 04期

关键词：

lithium-oxygen batteries; porous structure; nanotube; binary metal oxides; LI-O-2; BATTERY; CARBON; GRAPHENE; CATHODES; NICO2O4; OXIDE;

D O I：

10.20964/2018.04.32

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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 N-2 adsorption-desorption test shows a high specific surface area of 129.03 m(2) 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.

引用

页码：3309 / 3316

页数：8

共 28 条

[1] A polymer electrolyte-based rechargeable lithium/oxygen battery [J].