期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 580, 期 -, 页码 429-438出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.07.061
关键词
BiSb alloy; Porous carbon; Anode; Sodium-ion batteries; Potassium-ion batteries
资金
- National Natural Science Foundation of China [51871046, 51902046, 51874079, 51571054, 51771046, 51674068]
- Natural Science Foundation of Liaoning Province [201602257]
- Natural Science Foundation of Hebei Province [E2019501097, E2018501091, E2020501004]
- Science and Technology Project of Hebei Province [15271302D]
- Training Foundation for Scientific Research of Talents Project Hebei Province [A2016005004]
- Young Talents Program in University of Hebei Province [BJ2018014]
- Hebei Province higher education science and technology research project [QN2017103]
- Fundamental Research Funds for the Central Universities [N182304017, N182304015, N172302001, N172304044]
Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) are emerging next-generation energy storage technology, and exploiting applicative electrode materials to accommodate the large-sized Na+ and K+ are urgently needed. Herein, an innovative composite of BiSb@Bi2O3/SbOx nanoparticles encapsulated in porous carbon (BiSb@Bi2O3/SbOx@C) is fabricated through a template-assisted in-situ pyrogenic decomposition and evaluated as anodes for SIBs and PIBs. The BiSb@Bi2O3/SbOx@C delivers high specific capacity, superior rate capability (205 mA h g(-1) and 111 mA h g(-1) at 2 Ah g(-1)) and good cycling stability (248 mA h g(-1) and 214 mA h g(-1) after 500 cycles at 1 A g(-1)) in SIBs and PIBs. The excellent performance owes to the synergistic effect of Bi and Sb, the multilayer nanostructure design as well as the interconnected porous carbon network, which effectively promotes electron transport and ion diffusion, restricts volume change and enhances the electrode structure stability simultaneously. Furthermore, the capacitive behavior contributes much to the storage of sodium and potassium ions, which guarantees a superior rate capability. This research opens up new opportunities for exploring high-performance anodes for SIBs and PIBs. (C) 2020 Elsevier Inc. All rights reserved.
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