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Carbon Cloth Decorated with MoS 2 Microflowers as Flexible Binder‐Free Anodes for Lithium and Sodium Storage
Author(s) -
Kang Jinwei,
Feng Huagui,
Huang Ping,
Su Qingmei,
Dong Shijia,
Jiao Weicheng,
Chen Xiaojuan,
Du Gaohui,
Yu Yuan,
Xu Bingshe
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201801086
Subject(s) - anode , materials science , lithium (medication) , electrochemistry , calcination , composite number , carbon fibers , chemical engineering , electrode , sodium ion battery , nanotechnology , composite material , chemistry , catalysis , faraday efficiency , organic chemistry , medicine , engineering , endocrinology
Herein, a hierarchical architecture for high‐performance flexible lithium/sodium‐ion batteries (LIBs/SIBs) is reported, which comprises the interconnected carbon fiber cloth network (CC) decorated with MoS 2 microflowers assembled by ultrathin MoS 2 nanosheets (MoS 2 /CC) through an in situ hydrothermal method and a subsequent calcination treatment. When used as a flexible binder‐free anode, the MoS 2 /CC electrode shows an amazing cyclicality and a high reversible capacity for both lithium and sodium storages. As for LIBs, the MoS 2 /CC composite delivers a high specific capacity of 1263 mAh g −1 after cycled for 100 cycles at 0.1 A g −1 . A rate capacity of 838 mAh g −1 can be obtained at 2 A g −1 after 100 cycles. As for SIBs, a reversible capacity of 515 mAh g −1 can be retained after 100 cycles at 0.1 A g −1 . The enhanced electrochemical properties of MoS 2 /CC can be attributed to the following three synergic effects: 1) the carbon network offers an amazing conductivity environment without any binder or additive; 2) the sheet‐like structure of MoS 2 provides the short Li ions diffusion path and can accommodate stress during cyclings; and 3) the 3D architecture ensures the well‐preserved structural integrity. The above results show that the MoS 2 /CC composite holds great promise as a flexible anode for practical applications in next‐generation LIBs and SIBs.