Interwoven MXene Nanosheet/Carbon-Nanotube Composites as Li-S Cathode Hosts

被引:722
作者
Liang, Xiao [1 ]
Rangom, Yverick [1 ]
Kwok, Chun Yuen [1 ]
Pang, Quan [1 ]
Nazar, Linda F. [1 ]
机构
[1] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
TOTAL-ENERGY CALCULATIONS; HIGH-PERFORMANCE; SULFUR CATHODES; CARBON NANOTUBES; BATTERIES; INTERCALATION; DEPOSITION; NITROGEN; POROSITY; OXIDE;
D O I
10.1002/adma.201603040
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The complex surface chemistry that dictates the interaction between MXene and polysulfides - the formation of thiosulfate via consumption of -OH surface groups, followed by Lewis acid-base interaction between the exposed Ti atoms and polysulfides - is unravelled. Interweaving carbon nanotubes between the MXene layers creates a porous, conductive network with high polysulfide adsorptivity, enabling sulfur hosts with excellent performance even at high loading ( 5.5 mg cm(-2)).
引用
收藏
页数:7
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