板钛矿二氧化钛纤维的电化学性能研究
Study on electrochemical properties of brookite TiO2 fibers
锂离子二次电池由于具有比容量高、循环寿命长和对环境污染小等优点受到各国研究工作者和企业的广泛重视。作为锂离子电池的重要组成部分,负极材料是制约其整体性能的关键因素之一。最近,TiO2和TiO2基材料由于它们作为锂离子电池负极材料具有高活性、体积变化小、成本低、化学稳定性等优势,已被认为是很有前途的锂离子电池负极材料。本研究利用TiO2-C纳米球为前驱体,合成TiO2(B)-C纳米纤维复合材料。TiO2(B)-C纳米纤维呈现较好的嵌锂性能,在大电流密度2000 mA/g下充放电,经过100次循环后容量仍能保持在106 mAh/g,为TiO2(B)-C纳米纤维复合材料在锂离子二次电池负极材料应用提供了一个初步探索。
Lithium ion batteries have been paid much attention by world wide researchers and companies due to their high energy, longer battery life and no pollution. As an essential part of lithium ion batteries, anode materials have a great effect on the whole performance of batteries. Recently, TiO2 and TiO2-based materials have also been demonstrated as promising anodes in rechargeable lithium-ion batteries because of their high activity, low volume change, low cost, and chemical stability. In this work, using as-synthesized TiO2-C as precursor, we prepared TiO2(B)-C fibers, the TiO2(B)-C fibers exhibit good lithium storage performance. Their capacity can be maintained 106 mAh/g at the large current density of 2000 mA/g after 100 cycles. This work provides a primary investigation for the application of TiO2(B)-C fibers in lithium ion batteries.
田媛、任玲、曺敏花
电化学工业
纳米材料锂离子电池二氧化钛负极材料
iO2fiberselectrochemistrylithium ion batteries
田媛,任玲,曺敏花.板钛矿二氧化钛纤维的电化学性能研究[EB/OL].(2014-02-18)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201402-257.点此复制
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