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Hierarchical Molybdenum Dioxide Microflowers Encapsulating Nickel Nanoparticles for High‐Performance Lithium‐Ion Battery Electrodes
Author(s) -
Wang Chunli,
Sun Lianshan,
Wang Xuxu,
Cheng Yong,
Yin Dongming,
Yuan Dongxia,
Li Qian,
Wang Limin
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201700714
Subject(s) - anode , materials science , lithium (medication) , electrochemistry , nickel , molybdenum disulfide , electrode , nanoparticle , molybdenum , chemical engineering , ion , battery (electricity) , lithium ion battery , nanotechnology , metallurgy , chemistry , organic chemistry , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
Herein, we propose a strategy to prepare Ni/MoO 2 microflowers (Ni/MoO 2 /C) for lithium‐ion batteries through a facile aqueous phase reaction at room temperature. NiMoO 4 nanowires, as the Ni and Mo source, can chelate with dopamine to form a hierarchical microflower structure. The nickel content and the structure have significant influence on the performance for the final product. In the electrochemical measurements, the Ni/MoO 2 /C electrode reveals a high initial discharge capacity of 1117.3 mA h g −1 and a high capacity retention of 693.3 mA h g −1 after 100 cycles after an activated process at 1 A g −1 . Meanwhile, an excellent rate capability from 0.1 A to 5 A g −1 , where the discharge capacity is 1374 to 406 mA h g −1 , is obtained. The high capability suggests that Ni/MoO 2 /C may be a promising candidate as an anode material for lithium‐ion batteries.