Petal-like MoS2 Nanosheets Space-Confined in Hollow Mesoporous Carbon Spheres for Enhanced Lithium Storage Performance

Xiue Zhang; Rongfang Zhao; Qianhui Wu; Wenlong Li; Chao Shen; Lubin Ni; Hui Yan; Guowang Diao; Ming Chen

doi:10.1021/acsnano.7b04078

Petal-like MoS₂ Nanosheets Space-Confined in Hollow Mesoporous Carbon Spheres for Enhanced Lithium Storage Performance

ACS Nano. 2017 Aug 22;11(8):8429-8436. doi: 10.1021/acsnano.7b04078. Epub 2017 Aug 1.

Authors

Xiue Zhang¹, Rongfang Zhao¹, Qianhui Wu¹, Wenlong Li¹, Chao Shen¹, Lubin Ni¹, Hui Yan², Guowang Diao¹, Ming Chen¹

Affiliations

¹ School of Chemistry and Chemical Engineering, Yangzhou University , Yangzhou, Jiangsu 225002, China.
² Department of Chemistry, University of Louisiana at Lafayette , Lafayette, Louisiana 70504, United States.

PMID: 28742319
DOI: 10.1021/acsnano.7b04078

Abstract

An innovative approach for efficient synthesis of petal-like molybdenum disulfide nanosheets inside hollow mesoporous carbon spheres (HMCSs), the yolk-shell structured MoS₂@C, has been developed. HMCSs effectively control and confine in situ growth of MoS₂ nanosheets and significantly improve the conductivity and structural stability of the hybrid material. The yolk-shell structured MoS₂@C is proven to achieve high reversible capacity (993 mA h g^-1 at 1 A g^-1 after 200 cycles), superior rate capability (595 mA h g^-1 at a current density of 10 A g^-1), and excellent cycle performance (962 mA h g^-1 at 1 A g^-1 after 1000 cycles and 624 mA h g^-1 at 5 A g^-1 after 400 cycles) when evaluated as an anode material for lithium-ion batteries. This superior performance is attributed to the yolk-shell structure with conductive mesoporous carbon as the shell and the stack of two-dimensional MoS₂ nanosheets as the yolk.

Keywords: enhanced electrochemistry performance; hollow mesoporous carbon spheres; in situ confined growth; lithium-ion batteries; yolk−shell structured MoS2@C.

Publication types

Research Support, Non-U.S. Gov't