期刊
RSC ADVANCES
卷 7, 期 8, 页码 4791-4797出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra25599j
关键词
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资金
- National High-Tech R&D Program of China [2015AA034600, 2016YFB010030X, 2016YFB0700600]
- China Postdoctoral Science Foundation [2016M590691]
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.
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