Related Experiment Video
Updated: Sep 25, 2025
Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material
Published on: February 5, 2019
Three-dimensional TiNb2O7 anchored on carbon nanofiber core-shell arrays as an anode for high-rate lithium ion
Meili Qi1, Dongliang Chao2, Weifeng Sun1
1Key Laboratory of Engineering Dielectric and Applications (Ministry of Education), School of Materials Science and Engineering, Harbin University of Science and Technology Harbin 150080 P. R. China mhchen@hrbust.edu.cn.
Abstract:
The control of structure and morphology in an electrode design for the development of large-power lithium ion batteries is crucial to create efficient transport pathways for ions and electrons. Herein, we report a powerful combinational strategy to build omnibearing conductive networks composed of titanium niobium oxide nanorods and carbon nanofibers (TNO/CNFs) via an electrostatic spinning method and a hydrothermal method into free-standing arrays with a three-dimensional heterostructure core/shell structure. TNO/CNF electrode exhibits significantly superior electrochemical performance and high-rate capability (241 mA h g-1 at 10C, and 208 mA h g-1 at 20C). The capacity of the TNO/CNF electrode is 257 mA h g-1 after 2000 cycles at 20C, which is much higher than that of the TNO electrode. In particular, the TNO/CNF electrode delivers a reversible capacity of 153.6 mA h g-1 with a capacity retention of 95% after 5000 cycles at ultrahigh current density. Superior electrochemical performances of the TNO/CNF electrode are attributed to the unique composite structure.
