Azobenzene mesogens mediated preparation of SnS nanocrystals encapsulated with in-situ N-doped carbon and their enhanced electrochemical performance for lithium ion batteries application

doi:10.1088/1674-1056/25/9/096102

Abstract In this work, azobenzene mesogen-containing tin thiolates have been synthesized, which possess ordered lamellar structures persistent to higher temperature and serve as liquid crystalline precursors. Based on the preorganized tin thiolate precursors, SnS nanocrystals encapsulated with in-situ N-doped carbon layer have been achieved through a simple solventless pyrolysis process with the azobenzene mesogenic thiolate precursor served as Sn, S, N, and C sources simultaneously. Thus prepared nanocomposite materials as anode of lithium ion batteries present a large specific capacity of 604.6 mAh·g^-1 at a current density of 100 mA·g^-1, keeping a high capacity retention up to 96% after 80 cycles, and display high rate capability due to the synergistic effect of well-dispersed SnS nanocrystals and N-doped carbon layer. Such encouraging results shed a light on the controlled preparation of advanced nanocomposites based on liquid crystalline metallomesogen precursors and may boost their novel intriguing applications.

Keywords: azobenzene-containing tin thiolates liquid crystalline precursor controlled synthesis in-situ N-doped

Received: 01 June 2016
Accepted manuscript online:

PACS:	61.30.-v	(Liquid crystals)
	81.07.Bc	(Nanocrystalline materials)
	82.47.Aa	(Lithium-ion batteries)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 21574062) and the Huaian High-Technology Research Institute of Nanjing University, China (Grant No. 2011Q1).

Corresponding Authors: Junfei Duan, Dongzhong Chen
E-mail: junfei_duan@yahoo.com;cdz@nju.edu.cn

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Meng Wang(王勐), Yang Zhou(周旸), Junfei Duan(段军飞), Dongzhong Chen(谌东中) Azobenzene mesogens mediated preparation of SnS nanocrystals encapsulated with in-situ N-doped carbon and their enhanced electrochemical performance for lithium ion batteries application 2016 Chin. Phys. B 25 096102

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Azobenzene mesogens mediated preparation of SnS nanocrystals encapsulated with in-situ N-doped carbon and their enhanced electrochemical performance for lithium ion batteries application

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