Synthesis and electrochemical performance of Li4Ti5O12/C composite by a starch sol assisted method
作者： Li Wang , Zonglin Zhang , Guangchuan Liang , Xiuqin Ou , Yingqiu Xu
DOI: 10.1016/J.POWTEC.2011.09.011
关键词:
摘要: Abstract Li 4 Ti 5 O 12 /C composite anode materials were synthesized by a simple starch sol assisted method using TiO 2 -anatase and CO 3 as raw soluble carbon source. The influences of calcination temperature amounts on the microstructure electrochemical performance systematically investigated. samples characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM) constant-current charge/discharge cycling tests. results showed that with 10 wt.% at 800 °C for 6 h had homogeneous particle size distribution an average 200–300 nm exhibited optimal specific discharge capacities 168.5, 160.8, 155.1 141.8 mAh g − 1 0.2 °C, 1 °C, 2 °C 5 °C rates, respectively, satisfactory stability. It could be attributed to ultrafine particles in situ coating, which enhanced electronic conductivity diffusion lithium ions electrode.
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