还原氧化石墨烯负载的TiO₂-B纳米棒作为锂离子电池的负极材料

TiO2-B nanorods on reduced graphene oxide as anode materials for Li ion batteries.

作者信息

Zhen Mengmeng, Guo Shengqi, Gao Guandao, Zhou Zhen, Liu Lu

机构信息

Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, P. R. China.

出版信息

Chem Commun (Camb). 2015 Jan 11;51(3):507-10. doi: 10.1039/c4cc07446g.

DOI:10.1039/c4cc07446g

PMID:25410682

Abstract

Composites of TiO2-B nanorods and reduced graphene oxide (RGO) were prepared through a simple two-step hydrothermal process followed by subsequent heat treatment in argon. The obtained TiO2-B nanorods had a small size (∼10 nm diameter of the nanorod) and a uniform morphology. Importantly, the synergistic effect of RGO nanosheets and nanostructured TiO2-B leads to electrodes composed of the TiO2-B-RGO nanocomposites which exhibit excellent cycling stability and rate capability (260 mA h g(-1) at 1 C and 200 mA h g(-1) at 2 C after 300 cycles and 140 mA h g(-1) at 20 C).

摘要

通过简单的两步水热法制备了TiO₂ - B纳米棒与还原氧化石墨烯（RGO）的复合材料，随后在氩气中进行热处理。所制备的TiO₂ - B纳米棒尺寸较小（纳米棒直径约为10 nm）且形态均匀。重要的是，RGO纳米片与纳米结构的TiO₂ - B之间的协同效应使得由TiO₂ - B - RGO纳米复合材料构成的电极表现出优异的循环稳定性和倍率性能（300次循环后，1 C时为260 mA h g⁻¹，2 C时为200 mA h g⁻¹，20 C时为140 mA h g⁻¹）。