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Title: CoSe2-decorated NbSe2 nanosheets fabricated via cation exchange for Li storage
Authors: Zhang, Jianli
Du, Chengfeng
Zhao, Jin
Ren, Hao
Liang, Qinghua
Zheng, Yun
Madhavi, Srinivasan
Wang, Xin
Zhu, Junwu
Yan, Qingyu
Keywords: Engineering::Materials
Issue Date: 2018
Source: Zhang, J., Du, C., Zhao, J., Ren, H., Liang, Q., Zheng, Y., . . . Yan, Q. (2018). CoSe2-decorated NbSe2 nanosheets fabricated via cation exchange for Li storage. ACS Applied Materials & Interfaces, 10(44), 37773-37778. doi:10.1021/acsami.8b15457
Journal: ACS Applied Materials & Interfaces 
Abstract: Though 2D transition metal dichalcogenides have attracted a lot of attention in energy-storage applications, the applications of NbSe2 for Li storage are still limited by the unsatisfactory theoretical capacity and uncontrollable synthetic approaches. Herein, a controllable oil-phase synthetic route for preparation of NbSe2 nanoflowers consisted of nanosheets with a thickness of ∼10 nm is presented. Significantly, a part of NbSe2 can be further replaced by orthorhombic CoSe2 nanoparticles via a post cation exchange process, and the predominantly 2D nanosheet-like morphology can be well-maintained, resulting in the formation of CoSe2-decorated NbSe2 (denoted as CDN) nanosheets. More interestingly, the CDN nanosheets exhibit excellent lithium-ion battery performance. For example, it achieves a highly reversible capacity of 280 mAh g-1 at 10 A g-1 and long cyclic stability with specific capacity of 364.7 mAh g-1 at 5 A g-1 after 1500 cycles, which are significantly higher than those of reported pure NbSe2.
ISSN: 1944-8252
DOI: 10.1021/acsami.8b15457
Schools: School of Materials Science & Engineering 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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