摘要
We displayed that the low-cost natural zeolite with molecular sieve structure can be used as the carrier of sulfur in lithium-sulfur batteries.Meanwhile,a simple salt-washing method was implemented on zeolite for dredging the internal microchannel to improve the ability of adsorption,ion exchange and sulfur loading.The experimental results show that the first specific discharge capacities of zeolite/S and salt-washed zeolite/S cathode under 0.2 C current density are 950.7 and1116.8 mAh/g,respectively,and corresponding discharge capacities remain at 350.6 and 604.2 mAh/g after 300 cycles.The first specific discharge capacity of salt-washed zeolite/S composite is 17.5%higher than that sample without salt-washing,and the corresponding ionic conductivity is improved.
作者
HE Yanjia
DU Zibo
SU Yong
YU Junxi
CHEN Feifan
XIE Shuhong
PAN Jun'an
何妍佳;杜子博;SU Yong;YU Junxi;CHEN Feifan;谢淑红;潘俊安(Hunan Provincial Key Laboratory of Thin Film Materials and Devices,Xiangtan University,Xiangtan 411105,China;Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education,School of Materials Science and Engineering,XiangtanUniversity,Xiangtan 411105,China)
基金
Funded by the National Natural Science Foundation of China(Nos.11627801,51772254,11502225,and 51375017)
the Natural Science Foundation of Hunan Province of China(No.2019JJ50578)。
