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Uniform Yolk–Shell MoS 2 @Carbon Microsphere Anodes for High‐Performance Lithium‐Ion Batteries
Author(s) -
Pan Yunmei,
Zhang Jiajia,
Lu Hongbin
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201701691
Subject(s) - anode , materials science , electrode , lithium (medication) , electrochemistry , chemical engineering , carbon fibers , porosity , nanotechnology , microsphere , etching (microfabrication) , dispersity , void (composites) , composite material , chemistry , polymer chemistry , composite number , medicine , layer (electronics) , engineering , endocrinology
As an electrode material for lithium‐ion batteries (LIBs), MoS 2 has attracted much attention because of its high capacity and low cost. However, the rational design of a novel electrode structure with a high capacity, fast charge/discharge rate, and long cycling lifetime remains a great challenge. Herein, a environmentally friendly etching strategy is reported for the construction of monodisperse, inner void‐controlled yolk–shell MoS 2 @carbon microspheres. The resulting anode reveals an initial discharge capacity up to 1813 mAh g −1 , a high reversible capacity (1016 mAh g −1 ), excellent cycling stability (200 cycles), and superior rate performance. Such microspheres consist of nanosized MoS 2 yolks (≈280 nm), porous carbon shells (≈25 nm) and well‐controlled internal voids in between, opening a new pathway for the optimization of the electrochemical properties of MoS 2 ‐based anodes without sacrificing their capacity. In addition, this etching strategy offers a new method for the development of functional, hollow MoS 2 ‐based composites.