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

• Published in: Journal of colloid and interface science 2019-05, Vol.544, p.37-45
• Main Authors: Wang, Shouling, Wang, Ronghua, Zhao, Qiannan, Ren, Long, Wen, Jie, Chang, Jie, Fang, Xiaolong, Hu, Ning, Xu, Chaohe
• Format: Article
• Language: English
• Subjects: Aerogel; Graphene; Lithium-ion battery; MoS2; Stability
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2019.02.078

[Display omitted] 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.