Liang Chunyong, Huang Zhongliang, Wang Hongshui, Yang Tai, Liu Ning, Liao Tingdi, Wang Feng, Wang Xi
Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Fujian Provincial Collaborative Innovation Center for Ultra-Precision Optical Engineering and Applications, Quanzhou Normal University, Quanzhou, 362000, Fujian, China.
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, China.
Nanoscale Res Lett. 2022 Sep 5;17(1):86. doi: 10.1186/s11671-022-03719-y.
The hollow TiO anode material has received great attention for next-generation LIBs because of its excellent stability, environmental friendly, and low volume change during lithiation/delithiation. However, there are some problems associated with the current anatase TiO anode materials in practical application owing to low lithium-ion diffusivity and poor reversible theoretical capacities. The introduction of defects has been turned out to be a significant and effective method to improve electronic conductivity, especially oxygen vacancies. In this paper, a facile hydrothermal reaction and subsequent chemical vapor deposition method were successfully used to fabricate Co@TiO-carbon hollow nanospheres. These results suggest that the synthesized product exhibits good rate performance and superior cycling stability.
中空的TiO负极材料因其优异的稳定性、环境友好性以及在锂化/脱锂过程中较小的体积变化而在下一代锂离子电池中备受关注。然而，由于锂离子扩散率低和可逆理论容量差，目前的锐钛矿TiO负极材料在实际应用中存在一些问题。引入缺陷已被证明是提高电子导电性的一种重要且有效的方法，尤其是氧空位。本文成功地采用了一种简便的水热反应及后续化学气相沉积法制备了Co@TiO-碳中空纳米球。这些结果表明，合成产物表现出良好的倍率性能和优异的循环稳定性。
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