Al doping effects on LiCrTiO4 as an anode for lithium-ion batteries

作者：Li, Xiang; Huang, Yangyang; Li, Yuyu; Sun, Shixiong; Liu, Yi; Luo, Jiahuan; Han, Jiantao^*; Huang, Yunhui

来源：RSC Advances, 2017, 7(8): 4791-4797.

DOI：10.1039/c6ra25599j

• ELECTROCHEMICAL ENERGY-STORAGE
• SOL-GEL METHOD
• SPINEL LICRTIO4
• SURFACE-CHEMISTRY
• CATHODE MATERIALS
• NATURAL GRAPHITE
• TITANATE ANODE
• PERFORMANCE
• LI
• LI4TI5O12

Al-Doped LiCrTiO4 anodematerials are successfully synthesized by a conventional solid-state reaction. Their structural and electrochemical properties are systematically investigated. With increasing the Al doping level (x), the lattice parameters of LiAlxCr1-xTiO4 get smaller. Meanwhile, asymmetric polarization was significantly reduced during the charge/discharge process, in contrast to an enhanced compatibility of electrode materials with organic electrolyte. The Al-doped LiAl0.2Cr0.8TiO4 anode can still keep a discharge capacity of 123 mA h g(-1) at 1C for 100 cycles and 109 mA h g(-1) at 2C. More importantly, the Al-doped LiAl0.2Cr0.8TiO4 anode exhibits remarkable electrochemical properties at a high-temperature of 60 degrees C with a very stable capacity of about 145 mA h g(-1) at 1C, and is promising as a high-performance anode.

• 出版日期2017
• 单位华中科技大学