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Facile Synthesis of WS 2 Nanosheets–Carbon Composites Anodes for Sodium and Lithium Ion Batteries
Author(s) -
Li Junming,
Shi Xiaodong,
Fang Jing,
Li Jie,
Zhang Zhian
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600188
Subject(s) - anode , sulfidation , materials science , electrochemistry , lithium (medication) , ball mill , sodium , carbon fibers , chemical engineering , ion , composite material , composite number , electrode , chemistry , metallurgy , organic chemistry , medicine , sulfur , engineering , endocrinology
Abstract WS 2 nanosheets–carbon composites (WS 2 /C) were synthesized through a simple two‐step process including ball‐milling and sulfidation. When applied as anode materials for sodium‐ion batteries and lithium‐ion batteries, WS 2 /C composites deliver a high reversible sodium storage capacity of 270 mA h g −1 at 100 mA g −1 and a high reversible lithium storage capacity of 322 mA h g −1 at 200 mA g −1 after 100 cycles. The improved electrochemical performance of WS 2 /C compared with the bare WS 2 can be attributed to the synergic effects between WS 2 and Super P carbon black matrix, which can offer a beneficial conductivity environment for electron transfer and accommodate stress from the volume change during cycling.