Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang City 453007, Henan Province, PR China.
Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang City 453007, Henan Province, PR China; Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Henan Normal University, Xinxiang City 453007, Henan Province, PR China.
J Colloid Interface Sci. 2019 Apr 15;542:81-90. doi: 10.1016/j.jcis.2019.01.126. Epub 2019 Jan 30.
Three-dimensional reduced graphene oxide@SnO@nitrogen-doped carbon (3DG@SnO@N-C) composites are designed as high efficiency anode materials for lithium-ion batteries. The SnO particle size, surface area and pore size distribution of the 3DG@SnO@N-C could be simply controlled by altering the GO dosages. The optimized 3DG@SnO@N-C electrode demonstrates a reversible capacity of 1349.5 mAh g after 100 cycles at the current density of 100 mA g. Based on the structural and electrochemical dynamic tests, the bi-functional N-doped carbon coating layer could serve as both conductive channel for electron transport and as buffer layer to alleviate the volume change of embedded SnO NPs. In addition, the cross-linked conducting 3DG with porous structure attributes to the reduced electron transport and Li ion diffusion resistances, which finally leads to the enhanced cycling stability and rate performances.
三维还原氧化石墨烯@SnO@氮掺杂碳（3DG@SnO@N-C）复合材料被设计为用于锂离子电池的高效阳极材料。通过改变 GO 的用量，可以简单地控制 3DG@SnO@N-C 的 SnO 颗粒大小、比表面积和孔径分布。优化后的 3DG@SnO@N-C 电极在 100 mA·g 的电流密度下循环 100 次后，可逆容量为 1349.5 mAh·g。基于结构和电化学动力学测试，双功能氮掺杂碳涂层不仅可以作为电子传输的导电通道，还可以作为缓冲层来缓解嵌入 SnO NPs 的体积变化。此外，交联的多孔结构的导电 3DG 降低了电子传输和 Li 离子扩散阻力，最终提高了循环稳定性和倍率性能。
