植酸
材料科学
拉曼光谱
锂(药物)
磷
电化学
涂层
阴极
热液循环
微球
化学工程
纳米-
碳纤维
纳米技术
复合数
化学
电极
复合材料
冶金
物理化学
医学
生物化学
内分泌学
工程类
物理
光学
作者
Jing Su,Xing‐Long Wu,Chunpeng Yang,Jong‐Sook Lee,Jaekook Kim,Yu‐Guo Guo
摘要
A general and efficient hydrothermal strategy combined with a high-temperature carbon-coating technique has been developed for large scale synthesis of self-assembled LiFePO4/C nano/microspheres employing the biomass of phytic acid as a novel and eco-friendly phosphorus source. The LiFePO4/C nano/microspheres are investigated by SEM, TEM, EDS, XRD, Raman spectroscopy, and electrochemical techniques. A reasonable assembly process of the hierarchical structure is proposed on the basis of time-dependent experimental results. Because of the unique structure, the LiFePO4/C nano/microspheres show a high tap density of 1.2 g cm–3, a high reversible specific capacity of 155 mA h g–1 at 0.1 C, as well as excellent rate capability and cycling performance, exhibiting great potential as superior cathode materials in lithium ion batteries. The approach for the preparation of LiFePO4 by using PA as the phosphorus source may open new prospects for utilization of biomass to produce high performance cathode materials for lithium ion batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI