Premium
SnO 2 @MoO 2 /Carbon Ternary Hollow Nanocomposites with Robust Shell as High‐Performance Lithium‐Ion‐Battery Anodes
Author(s) -
Wang Yong,
Mao Peiyuan,
Rao Shun,
Guo Wenbin,
Zhang Fanchao,
Xiao Pandeng,
Zhang Wen
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901665
Subject(s) - materials science , nanocomposite , anode , faraday efficiency , nanomaterials , nanoparticle , coating , ternary operation , chemical engineering , nanotechnology , lithium (medication) , oxide , lithium ion battery , battery (electricity) , electrode , metallurgy , chemistry , medicine , power (physics) , physics , engineering , quantum mechanics , endocrinology , computer science , programming language
Abstract SnO 2 @MoO 2 /carbon hollow nanospheres are successfully fabricated by coating a Mo‐polydopamine chelate precursor on SiO 2 @SnO 2 nanospheres, with subsequent annealing and HF corrosion. In the unique nanocomposites, the external carbon layer with MoO 2 nanoparticles and a SnO 2 hollow inner layer as the skeleton can not only enhance electronic conductivity, but also reinforce the shell of the hollow nanocomposites while preventing the aggregation of SnO 2 and MoO 2 nanoparticles during intensive cycles, thus enhancing the structural integrity, rate capability and cyclic stability. In virtue of the respective roles and synergistic effects of the three nanocomponents, the unique ternary nanocomposites possess an initial discharge capacity of 1097 mAhg −1 , high initial coulombic efficiency of 85 %, and good cyclic performance (725 mAhg −1 after 300 cycles) as anode nanomaterials. The structural design of the MoO 2 /C layer coating metal‐oxide hollow nanospheres can provide a novel synthetic approach for other hybrid energy nanomaterials with excellent properties.