Cobalt-copper layered double hydroxide nanosheets as high performance bifunctional catalysts for rechargeable lithium-air batteries

Liu, Ying1,2; Liu, Yan3; Shi, Haohong1; Wang, Man2; Cheng, Samson Ho-Sum2; Bian, Haidong2; Kamruzzaman, Md4; Cao, Lujie1; Chung, C. Y.2; Lu, Zhouguang1

2016-12-15

10.1016/j.jallcom.2016.07.224

JOURNAL OF ALLOYS AND COMPOUNDS   影响因子和分区

0925-8388

1873-4669

Designing novel cost-effective catalysts is one of the greatest challenges in the development of highperformance rechargeable Li-air battery. Here, we report the synthesis of novel cobalt-copper layered double hydroxide (LDH) nanosheets via a simple co-precipitation method under Ar gas. The resulting CoCu LDH nanosheets, possessing an average thickness of 4.3 nm and a high surface area of 163 m(2) g(-1), have been applied as bifunctional catalysts for Li-air battery. In the simulated air environment, Li-air batteries with Co-Cu LDH nanosheets demonstrate higher discharge capacity of 4870 mAh g(-1) at 200 mA g(-1), lower charge overpotential and better cycling stability with controlling capacity of 1000 mAh g(-1), which is much better than that with CuCo2O4 electrode. The enhanced electrochemical performance is ascribed to the large interface between electrolytes and catalysts resulting from high surface area of Co-Cu LDH, providing plenty of actives sites to promote the formation/decomposition of Li2O2. The unique ultrathin nanosheet structure of Co-Cu LDH can also facilitate the mass transportation of O-2 and ions in Li-air battery. (C) 2016 Elsevier B.V. All rights reserved.

Lithium-air batteries Cobalt-copper layered double hydroxide Nanosheets Catalysts Oxygen evolution reaction

SCI ; EI

英语

第一 ; 通讯

Science and Technology Innovation Foundation for the Undergraduates of SUSTC[2015x19] ; Science and Technology Innovation Foundation for the Undergraduates of SUSTC[2015x12]

Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering

Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000384439000050

ELSEVIER SCIENCE SA

20163102670763

Binary alloys ; Catalysts ; Cobalt alloys ; Cobalt compounds ; Copper alloys ; Copper compounds ; Cost effectiveness ; Lithium alloys ; Mass transportation ; Nanocatalysts ; Nanosheets ; Precipitation (chemical)

Copper Alloys:544.2 ; Alkali Metals:549.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Nanotechnology:761 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Industrial Economics:911.2 ; Solid State Physics:933

MATERIALS SCIENCE

Web of Science

1.South Univ Sci & Technol China, Dept Mat Sci & Engn, Shenzhen, Peoples R China
2.City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China
3.Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China
4.City Univ Hong Kong, Dept Phys & Mat Sci, Ctr Super Diamond & Adv Films COSDAF, Hong Kong, Hong Kong, Peoples R China

Liu, Ying,Liu, Yan,Shi, Haohong,et al. Cobalt-copper layered double hydroxide nanosheets as high performance bifunctional catalysts for rechargeable lithium-air batteries[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,688:380-387.

Liu, Ying.,Liu, Yan.,Shi, Haohong.,Wang, Man.,Cheng, Samson Ho-Sum.,...&Lu, Zhouguang.(2016).Cobalt-copper layered double hydroxide nanosheets as high performance bifunctional catalysts for rechargeable lithium-air batteries.JOURNAL OF ALLOYS AND COMPOUNDS,688,380-387.

Liu, Ying,et al."Cobalt-copper layered double hydroxide nanosheets as high performance bifunctional catalysts for rechargeable lithium-air batteries".JOURNAL OF ALLOYS AND COMPOUNDS 688(2016):380-387.