材料科学
阳极
阴极
透射电子显微镜
扫描电子显微镜
锂(药物)
化学工程
电化学
碳纤维
复合数
球体
锂离子电池
电池(电)
纳米技术
复合材料
电极
化学
物理化学
内分泌学
功率(物理)
工程类
物理
医学
量子力学
天文
作者
Chun Han Hsu,Tai Ran Du,Chih Hao Tsao,Hong Ping Lin,Ping Lin Kuo
标识
DOI:10.1016/j.jallcom.2019.05.221
摘要
Hollow Li2FeSiO4 spheres have been successfully prepared using hollow silica spheres as both reactant and template, for which the thickness of the nanoscale Li2FeSiO4 thin shells are about 50 nm. Then, the hollow Li2FeSiO4 spheres were coated by phenolic resin as a carbon precursor to obtain the hollow Li2FeSiO4/Carbon sphere (HLFS/C) composite. The structure characterizations by X-ray diffraction, transmission electron microscopy and scanning electron microscopy show that the HLFS/Cs are hollow structures with high purity. When used as the cathode material under charge/discharge rates at 0.05C (1C = 166 mAh g−1), the HLFS/C exhibited a capacity of 155 mAh g−1 with good cycle stability. Furthermore, the HLFS exhibited capacities of 820, 650 and 420 mAh g−1 for 0.15C, 0.3C and 0.6C rates for anode application, respectively, with good cycle stability. The hollow structure of HLFS/C enables us to overcome the aggregation and structural instability problems, which is essential for the improvement of the electrochemical performance.
科研通智能强力驱动
Strongly Powered by AbleSci AI