In order to solve the problems of the shuttle effect and volume expansion of lithium-sulfur batteries,the CPM-200-InMn@S/ppy composite material was prepared as the cathode material,and it showed excellent electrochemical performance.The specific discharge capacity can reach 952.42mAh/g for the first time at 0.1C,and the capacity retention rate can reach 38.56% after 100 cycles.CPM-200-InMn@S/ppy combined the dual advantages of CPM-200-InMn and polypyrrole (ppy) at the same time,not only had the high conductivity of ppy,but also had the structural characteristics and large specific surface area of CPM-200-InMn,so that the shuttle effect and volume expansion can be suppressed by physical adsorption and chemical catalysis.Compared with CPM-200-InMn@S cathode material,CPM-200-InMn@S/ppy shown a higher reversible capacity and more excellent rate performance.
Zhang Mi, Yao Jia, Han Guodong, Wang Juan
. Study on the CPM-200-InMn@S/ppy composite material as new cathode material for high performance lithium sulfur battery[J]. New Chemical Materials, 2021
, 49(8)
: 116
-120
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.08.024
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