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Mesoporous Manganese Sulfide Spheres Anchored on Graphene Sheets as High‐Capacity and Long‐Life Anode Materials for Lithium‐Ion Batteries
Author(s) -
Chen Dezhi,
Quan Hongying,
Huang Zhongning,
Guo Lin
Publication year - 2015
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201500171
Subject(s) - materials science , graphene , anode , mesoporous material , lithium (medication) , electrolyte , manganese , chemical engineering , microstructure , sulfide , electrode , composite number , nickel sulfide , nanotechnology , composite material , metallurgy , catalysis , chemistry , organic chemistry , engineering , medicine , endocrinology
A novel porous manganese sulfide/graphene composite was prepared by a simple in situ solvothermal approach. These mesoporous manganese sulfide sub‐microspheres with an average diameter of 700 nm were anchored homogeneously onto graphene nanosheets. Such a special microstructure not only effectively alleviates the mechanical strain of the electrode upon lithiation/delithiation, but it also improves contact between the electrode materials and the electrolyte. As a result, the composite exhibits a high Li‐ion storage capacity and excellent cycling stability as an anode material for lithium‐ion batteries. At a current of 50 mA h g −1 , the material delivers a reversible capacity up to 1231 mA h g −1 ; at a current density of 0.2 A g −1 , the material still retains a reversible capacity of 735 mA h g −1 after 300 cycles.