Spinel Li4Ti5−xZrxO12 (0 ⩽ x ⩽ 0.25) materials as high-performance anode materials for lithium-ion batteries
作者： Ting-Feng Yi , Bin Chen , Hao-Yu Shen , Rong-Sun Zhu , An-Na Zhou
DOI: 10.1016/J.JALLCOM.2013.01.018
关键词: Metallurgy 、 Chemical engineering 、 Electrochemistry 、 Spinel 、 Ion 、 Anode 、 Lithium 、 Lithium-ion battery 、 Raw material 、 Kinetics 、 Materials science
摘要: Abstract Spinel Li 4 Ti 5− x Zr O 12 (0 ⩽ ⩽ 0.25) materials were prepared by a solid-state reaction method using 2 CO 3 , ZrO and TiO as raw material, the structure electrochemical performance of material investigated TG–DTA, XRD, SEM, CV, EIS charge–discharge tests. The Zr-doped 5 show much improved rate capability specific capacity compared with pristine . Especially, offers about 111 mA h g −1 but 4.9 0.1 delivers remarkable 172 mA h g at 2 C rate. sample 155 mA h g even after 150 cycles 5 C rates, implying possibility for high power applications, such HEV PHEV. anode made from modified powder is significantly when discharged current rates due to reduced charge transfer resistance fast lithium insertion/extraction kinetics.
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