A team at Zhejiang University (China) has developed a high-performance lithium ion battery anode material consisting of free-standing and binder-free 3D porous carbon coated MoS2/nitrogen-doped graphene (C-MoS2/N-G). As an anode for lithium ion batteries, the C-MoS2/N-G electrode delivers a high first discharge capacity of 1600 mAh g−1 and maintains 900 mAh g−1 after 500 cycles at a current density of 200 mA g−1.
Superior high-rate capability is achieved for the C-MoS2/N-G with a reversible capacity of 500 mAh g−1 at a high current density of 4000 mA g−1.
As reported in a paper in the Journal of Power Sources, the researchers constructed the integrated electrode via a hydrothermal-induced self-assembly process. The preformed carbon coated MoS2 is strongly anchored on the porous nitrogen-doped graphene aerogel architecture.
D. Xie, W.J. Tang, X.H. Xia, D.H. Wang, D. Zhou, F. Shi, X.L. Wang, C.D. Gu, J.P. Tu (2015) “Integrated 3D porous C-MoS2/nitrogen-doped graphene electrode for high capacity and prolonged stability lithium storage,” Journal of Power Sources, Volume 296, Pages 392-399 doi: 10.1016/j.jpowsour.2015.07.074