In situ formation of carbon encapsulated nanosheet-assembled MoSe2 hollow nanospheres with boosting lithium storage

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:491

Article

Wu, Laidi¹  Tan, Pengfei¹  Liu, Yi¹  Shang, Yanyang¹  Liu, Wenwen¹  Xiong, Xiang¹  Pan, Jun¹ 

[1] Cent S Univ, State Key Lab Power Met, Changsha 410083, Hunan, Peoples R China

关键词: MoSe2;    Nanocomposites;    Hollow spheres;    Anode;    Lithium-ion batteries;   

DOI  :  10.1016/j.jcis.2016.12.020

来源: Elsevier

【 摘 要 】

Carbon encapsulated nanosheet-assembled MoSe2 hollow nanospheres were in situ fabricated via a facile hydrothermal treatment and subsequent annealing treatment. When evaluated as anode material for lithium-ion batteries, the MoSe2/C hybrid hollow spheres manifest prodigious cycling stability (a high reversible capacity of 795 mA h g(-1) after 250 cycles at 0.2 A g(-1) and 744 mA h g(-1) after 300 cycles at 1 A g(-1)) and compelling rate capability (370 mA hg(-1), even at a high current density of 10 A g(-1)) compared to the bare MoSe2 hollow nanospheres. The impressive lithium storage properties of the as prepared MoSe2/C nanocomposites can be attributed to the introduction of glucose-derived conductive carbon and the design of hollow structure, which facilitates fast electron and ion transfer, relieves the stress caused by volume variation upon cycling and improves the electric conductivity. Such remarkable electrochemical performances together with universal approach endow this material with potential application for next generation lithium-ion batteries. (C) 2016 Published by Elsevier Inc.

【 授权许可】

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