阳极
材料科学
锂(药物)
碳纤维
涂层
扩散
溶剂热合成
电导率
复合材料
离子
化学工程
电极
复合数
化学
有机化学
内分泌学
工程类
物理化学
物理
热力学
医学
作者
Huili Shi,Chaoyun Shi,Zhitong Jia,Ao Li,Binfang He,Tianxiang Li,Jingbo Chen
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2023-03-10
卷期号:52 (13): 4214-4223
被引量:1
摘要
TiO2 is a promising and safe anode material for lithium-ion batteries. Nevertheless, its inferior electronic conductivity and inferior cycling capability have always limited its practical application. In this study, flower-like TiO2 and TiO2@C composites are produced by a simple one-pot solvothermal method. It is noticeable that the synthesis of TiO2 is carried out simultaneously with carbon coating. The flower-like TiO2 with a special morphology can decrease the distance of lithium ion diffusion, while the carbon coating improves the electronic conductivity of TiO2. At the same time, the carbon content of TiO2@C composites can be controlled by adjusting the amount of glucose. Compared with flower-like TiO2, TiO2@C composites have higher specific capacity and preferable cycling performance. It is noteworthy that the specific surface area of TiO2@C with a carbon content of 63.36% is 293.94 m2 g-1 and its capacity remains at 371.86 mAh g-1 after 1000 cycles at 1 A g-1. Other anode materials can also be prepared using this strategy.
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