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Advanced N-doped mesoporous molybdenum disulfide nanosheets and the enhanced lithium-ion storage performance

journal contribution
posted on 01.01.2016, 00:00 authored by Alex QinAlex Qin, Weiwei LeiWeiwei Lei, Dan LiuDan Liu, Ying (Ian) ChenYing (Ian) Chen
With the increasing interest in two-dimensional van der Waals materials, molybdenum disulfide (MoS2) has emerged as a promising material for electronic and energy storage devices. It suffers from poor cycling stability and low rate capability when used as an anode in lithium ion batteries. Here, N-doped MoS2 nanosheets with 2-8 atomic layers, increased interlayer distance, mesoporous structure and high surface area synthesised by a simple sol-gel method show an enhanced lithium storage performance, delivering a high reversible capacity (998.0 mA h g-1, 50 mA g-1), high rate performance (610 mA h g-1, 2 A g-1), and excellent cycling stability. The excellent lithium storage performance of the MoS2 nanosheets might be due to the better electrical and ionic conductivity and improved lithium ion diffusion which are related to their structural characteristics and high concentration N doping. The possible mechanism of the improved performance is proposed and discussed.

History

Journal

Journal of materials chemistry a

Volume

4

Issue

4

Pagination

1440 - 1445

Publisher

Royal Society of Chemistry

Location

Cambridge, Eng.

ISSN

2050-7488

eISSN

2050-7496

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2016, Royal Society of Chemistry