Freeze-drying induced self-assembly approach for scalable constructing MoS2/graphene hybrid aerogels for lithium-ion batteries

Shouling Wang; Ronghua Wang; Qiannan Zhao; Long Ren; Jie Wen; Jie Chang; Xiaolong Fang; Ning Hu; Chaohe Xu

doi:10.1016/j.jcis.2019.02.078

Freeze-drying induced self-assembly approach for scalable constructing MoS₂/graphene hybrid aerogels for lithium-ion batteries

J Colloid Interface Sci. 2019 May 15:544:37-45. doi: 10.1016/j.jcis.2019.02.078. Epub 2019 Feb 23.

Authors

Shouling Wang¹, Ronghua Wang², Qiannan Zhao³, Long Ren¹, Jie Wen³, Jie Chang¹, Xiaolong Fang¹, Ning Hu³, Chaohe Xu⁴

Affiliations

¹ School of Chemistry and Materials Engineering, Chizhou University, Chizhou 247000, China.
² College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China. Electronic address: wangrh@cqu.edu.cn.
³ College of Aerospace Engineering, and the State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China.
⁴ College of Aerospace Engineering, and the State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China; Key Laboratory of Low-grade Energy Utilization Technologies and Systems, CQU-NUS Renewable Energy Materials & Devices Joint Laboratory, Chongqing University, Chongqing 400044, China. Electronic address: xche@cqu.edu.cn.

PMID: 30825799
DOI: 10.1016/j.jcis.2019.02.078

Abstract

Three dimensional (3D) MoS₂/graphene hybrid aerogels have emerged as promising candidates for energy storage and conversion technologies. In this paper, a facile one-pot freeze-drying self-assembly approach combined with in-situ thermal decomposition-reduction method is proposed to construct 3D porous aerogels with MoS₂ active materials anchored on graphene backbone, making a highly interconnected network with desirable structural stability. The constructed hybrid aerogels with the optimal MoS₂/GS ratio delivered high specific capacities, excellent cycling stability (862.5 mAh g^-1 after 200 cycles at 0.1 A g^-1 with a capacity retention of 109.6%) and good rate capability (622, 563 and 480 mAh g^-1 at 1, 2 and 3 A g^-1, respectively), holding great promise to be used as anode materials of LIBs. More importantly, the current method is simple, low-cost, environmental friendly without any need for toxic reagents, suitable for scalable production and can be extended to prepare other graphene-based hybrid aerogels.

Keywords: Aerogel; Graphene; Lithium-ion battery; MoS(2); Stability.