Co3O4@δ-MnO2/Pt Core-Shell Arrays as Efficient Catalytic Cathode for Lithium-Oxygen Cells

被引：3
|
作者：
Cheng Hao [1 ]
Xie Jian [1 ,2 ]
Chen Zhen [3 ]
Tu Jian [3 ]
Cao Gao-Shao [2 ]
Zhao Xin-Bing [1 ,2 ]
机构：
[1] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310027, Zhejiang, Peoples R China
[3] LI FUN Technol Corp Ltd, Zhuzhou 412000, Hunan, Peoples R China
来源：
CHINESE JOURNAL OF INORGANIC CHEMISTRY | 2018年 / 34卷 / 06期
关键词：
Li-O-2; cells; electrocatalysis; core-shell array; Co3O4@delta-MnO2/Pt; LI-O-2; BATTERIES; AIR BATTERIES; ALPHA-MNO2; NANORODS; IN-SITU; CARBON; ELECTRODE; GRAPHENE; PEROXIDE; ELECTROCATALYSTS; NANOPARTICLES;
D O I：
10.11862/CJIC.2018.137
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A unique core-shell Co3O4@delta-MnO2/Pt arrays-type cathode on Ni foam has been fabricated by a facile, controlled hydrothermal approach. The array-type structure facilitates the electrode wetting and oxygen gas transport and supplies free volume for Li2O2 loading. The Co3O4@delta-MnO2/Pt cathode exhibits high catalytic effect for ORR and OER, where thin-layered Li2O2 shows conformal growth along the surface of the Co3O4@delta-MnO2/Pt arrays with the array-type structure remained. This growth behavior of Li2O2 renders easy decomposition of Li2O2 upon charge. Li-O-2 cells with Co3O4@delta-MnO2/Pt delivers a high discharge capacity (2 480 mAh.g(-1) at 100 mA.g(-1)) and long cycle life (65 cycles at 200 mA.g(-1) with a limited capacity of 500 mAh.g(-1)), which are better than those with Co3O4 or Co3O4@delta-MnO2 cathodes.
引用
收藏
页码：1173 / 1182
页数：10
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