植酸
材料科学
电化学
阴极
微观结构
锂(药物)
磷酸铁锂
电池(电)
锂离子电池
离子
碳纤维
化学工程
复合数
复合材料
有机化学
物理化学
电极
化学
生物化学
内分泌学
工程类
功率(物理)
物理
医学
量子力学
作者
Qian Zhao,Yongzhi Zhang,Yan Meng,Yujue Wang,Junke Ou,Yong Guo,Dan Xiao
出处
期刊:Nano Energy
[Elsevier]
日期:2017-03-06
卷期号:34: 408-420
被引量:113
标识
DOI:10.1016/j.nanoen.2017.03.006
摘要
A glucose-derived carbon-encapsulated (GC) LiFePO4 (LFP) with internal carbon sheets (IC) composite, GC/IC/LFP, is synthesized by using phytic acid (PhyA) as a special phosphorus source. PhyA plays an important role as a structure-director, complexing agent and antioxidant, and the resulted IC contributes to improving electrochemical properties. The special morphology and microstructure of precursors and final materials are characterized and discussed in detail. The prepared GC/IC/LFP shows not only an excellent cycle performance, but an ultra-high specific capacity of 192 mA h g−1 at 0.1 C, which exceeds the theoretical capacity of LFP. A remarkable rate performance of 140 mA h g−1 at 10 C was also achieved. The energy efficiency of GC/IC/LFP can reach nearly 96% at 0.1 C.
科研通智能强力驱动
Strongly Powered by AbleSci AI