金红石TiO2介晶合成及其储锂性能研究
Synthesis of rutile TiO2 mesocrystal and its lithium storage properties
本文通过一种简单的低温水热合成法，利用钛酸四丁酯作为钛源，在表面活性剂十六烷基苯磺酸的作用下，快速高效地合成出TiO2介晶。利用XRD、SEM、TEM等表征手段对所合成的材料进行物相形貌分析。结果表明，所合成样品是由超细的纳米棒构筑单元有规则的排列组装而成金红石TiO2介晶。进一步，将这种金红石TiO2介晶用作锂离子电池负极材料并考察其电化学性能。研究结果表明，在5 C的电流密度下，经过200圈循环，其比容量仍可保持在126.0 mA h g-1，展现出大的可逆比容量、良好的循环稳定性和倍率性能。
In this paper, a facile, low-temperature hydrothermal synthetic route was designed for fabricating rutile TiO2 mesocrystals composed of ultra-tiny, rod-like subunits. The as-prepared samples were measured by XRD, SEM and TEM, and further then used as the anode materials for lithium-ion batteries. The results indicated that rutile TiO2 mesocrystals exhibited a capacity of 126.0 mA h g-1 with a capacity retention of 100% for over 200 cycles at a charge-discharge rate as high as 5 C and enhanced rate capability up to 30 C (80.0 mA h g-1 at 30 C), demonstrating superior lithium storage properties in terms of excellent cycling stability and rate capability.
魏明灯、蓝通斌、张伟峰
能源动力工业经济化学晶体学
锂离子电池iO2金红石介晶电化学性能
Lithium ion batteryTiO2RutileMesocrystalsElectrochemical performace
魏明灯,蓝通斌,张伟峰.金红石TiO2介晶合成及其储锂性能研究[EB/OL].(2016-12-14)[2025-08-05].http://www.paper.edu.cn/releasepaper/content/201612-272.点此复制
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