3 years ago

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

Petal-like MoS2 Nanosheets Space-Confined in Hollow Mesoporous Carbon Spheres for Enhanced Lithium Storage Performance
Ming Chen, Chao Shen, Hui Yan, Xiue Zhang, Lubin Ni, Wenlong Li, Rongfang Zhao, Qianhui Wu, Guowang Diao
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.

Publisher URL: http://dx.doi.org/10.1021/acsnano.7b04078

DOI: 10.1021/acsnano.7b04078

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