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Interwoven MXene Nanosheet/Carbon‐Nanotube Composites as Li–S Cathode Hosts
Author(s) -
Liang Xiao,
Rangom Yverick,
Kwok Chun Yuen,
Pang Quan,
Nazar Linda F.
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201603040
Subject(s) - polysulfide , materials science , nanosheet , carbon nanotube , nanotechnology , carbon fibers , sulfur , cathode , electrochemistry , composite material , electrode , chemistry , metallurgy , composite number , electrolyte
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 ).