阳极
电化学
锂(药物)
兴奋剂
材料科学
离子
锂离子电池的纳米结构
无机化学
化学工程
化学
光电子学
电极
工程类
物理化学
有机化学
医学
内分泌学
作者
Yuhao Ma,Yangyang Wang,Guilin Yan,Fei Yuan,Wentao Zhang
标识
DOI:10.1016/j.powtec.2022.117652
摘要
The Ca-doped Li 4 Ti 5 O 12 (LTO-CA) samples with flower-like morphology, were synthesized by a hydrothermal method and used as anode material for lithium-ion batteries. The results showed that Ca 2+ ions were successfully introduced into the structure of LTO, and the flower-like morphology was assembled from a large number of nanosheets. The influence of Ca 2+ doping on structure and electrochemical performances of LTO were studied in detail. In addition, the partial valence conversion of Ti 4+ into Ti 3+ was confirmed in the structure for increasing the electronic conductivity. The electrochemical performance results revealed that the specific discharge capacity was enhanced with the incorporation of Ca 2+ , and the discharge rate and cycling performance were also improved. In particular, the LTO-CA4 with 0.4% Ca 2+ doping had a specific capacity of 196.9 mAh/g under discharge rate of 1C, and the capacity retention rate reached as high as 87.49% after 200 cycles, which indicated the LTO-CA4 had a potential application in lithium-ion batteries as anode material. • Flower-like Ca-doped Li 4 Ti 5 O 12 was used as lithium-ion battery anode material. • LTO-CA4 had a specific capacity of 196.9 mAh/g under discharge rate of 1C. • The capacity retention rate reached as 87.49% even after 200 cycles.
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