3D CoMoSe4 Nanosheet Arrays Converted Directly from Hydrothermally Processed CoMoO4 Nanosheet Arrays by Plasma-Assisted Selenization Process Toward Excellent Anode Material in Sodium-Ion Battery

Nanoscale Research Letters

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[1] 0000 0001 2264 7233, grid.12955.3a, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Pen-Tung Sah Institute of Micro-Nano Science and Technology/Department of Physics, Xiamen University, 361005, Xiamen, Fujian, China;0000 0001 2264 7233, grid.12955.3a, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Pen-Tung Sah Institute of Micro-Nano Science and Technology/Department of Physics, Xiamen University, 361005, Xiamen, Fujian, China;0000 0004 0532 0580, grid.38348.34, Department of Materials Science and Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan, Republic of China;0000 0001 2264 7233, grid.12955.3a, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, Fujian, China;0000 0004 0532 0580, grid.38348.34, Department of Materials Science and Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan, Republic of China;0000 0004 0532 0580, grid.38348.34, Department of Materials Science and Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan, Republic of China;0000 0004 0532 0580, grid.38348.34, Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, 30013, Hsinchu, Taiwan, Republic of China;0000 0004 0531 9758, grid.412036.2, Department of Physics, National Sun Yat-Sen University, 80424, Kaohsiung, Taiwan, Republic of China;

关键词: CoMoSe nanosheet arrays;    CoMoO nanosheet arrays;    Plasma-assisted selenization;    Sodium-ion battery;   

DOI  :  10.1186/s11671-019-3035-6

来源: publisher

【 摘 要 】

In this work, three-dimensional (3D) CoMoSe4 nanosheet arrays on network fibers of a carbon cloth denoted as CoMoSe4@C converted directly from CoMoO4 nanosheet arrays prepared by a hydrothermal process followed by the plasma-assisted selenization at a low temperature of 450 °C as an anode for sodium-ion battery (SIB) were demonstrated for the first time. With the plasma-assisted treatment on the selenization process, oxygen (O) atoms can be replaced by selenium (Se) atoms without the degradation on morphology at a low selenization temperature of 450 °C. Owing to the high specific surface area from the well-defined 3D structure, high electron conductivity, and bi-metal electrochemical activity, the superior performance with a large sodium-ion storage of 475 mA h g−1 under 0.5–3 V potential range at 0.1 A g−1 was accomplished by using this CoMoSe4@C as the electrode. Additionally, the capacity retention was well maintained over 80 % from the second cycle, exhibiting a satisfied capacity of 301 mA h g−1 even after 50 cycles. The work delivered a new approach to prepare a binary transition metallic selenide and definitely enriches the possibilities for promising anode materials in SIBs with high performances.

【 授权许可】

CC BY