Kirkendall effect modulated hollow red phosphorus nanospheres for high performance sodium-ion battery anodes
Linqin Zhu1, Zixuan Zhu, Jianbin Zhou
1Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science & Technology of China, Hefei, Anhui 230026, P. R. China. zjianb@mail.ustc.edu.cn.
Chemical Communications (Cambridge, England)
|October 6, 2020
Abstract:
Hollow nanospheres are desirable to resolve the volume expansion of red phosphorus anodes for sodium-ion batteries. Here, we developed a mild molten salt method to prepare hollow red phosphorus in the NaCl-KCl-AlCl3 system by using the Kirkendall effect. As an anode for sodium-ion batteries, the prepared hollow nanospheres exhibit a highly reversible capacity of 624 mA h g-1 at 4.0C and 737 mA h g-1 at 1.0C even after 600 cycles with a low capacity fading rate of 0.06% per cycle.
