锂(药物)
碳纤维
材料科学
离子
锂离子电池的纳米结构
纳米技术
钛酸锂
阳极
锂离子电池
化学工程
电池(电)
化学
电极
复合数
复合材料
工程类
物理
有机化学
医学
功率(物理)
物理化学
量子力学
内分泌学
作者
Yibo Hu,Lingxu Wang,Chunyan Zhu,Luyuan Zhang,Chengxiang Wang
标识
DOI:10.1016/j.apsusc.2024.159619
摘要
Improving the high-rate performance of lithium-ion batteries is one of the pressing needs of the current electronic device and electric vehicle markets. In this work, a carbon-coated nanosheet-structure lithium titanate (CC-LTO) was synthesized by a relatively simple solvothermal reaction and calcination process, which can achieve ultrafast charging and discharging performance and ultralong cycle stability in lithium-ion battery systems. Ultrathin nanosheet structure greatly shortens the diffusion distance of lithium ions, while the uniform carbon cladding improves the material's electrical conductivity, so the CC-LTO exhibits excellent rate performance. The CC-LTO has a high specific capacity of 153.9 mAh g−1 and 137.9 mAh g−1 at high rate of 80C and 160C, respectively. Meanwhile, CC-LTO also has very high cycling stability, with a capacity retention rate of 77.2% after 10,000 cycles at 10C. Therefore, CC-LTO has a very broad application prospect in the field of lithium-ion battery and commercialization market.
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