电源技术2011，Vol.35Issue(12)：1487-1489,3.
LA132的pH值对锂离子电池性能的影响
Effect of pH value of LA132 on performance of lithium-iron batteries
石锺琪 1黄明 2杨克润 1王文彬 2邵进 1邓正华2
作者信息
- 1. 中国科学院成都有机化学研究所,四川成都610041
- 2. 中国科学院研究生院,北京100039
- 折叠
摘要
Abstract
In this paper, the effect of the pH values of aqueous binder LA132 on the performance of the LiFePO4 cathode was researched. Here the effect of different pH values on the Fe2+ percentage of LiFePO4 cathode was researched via titration method, and then the physical and electrochemical properties of LiFePO4 cathode with various pH values were investigated by using constant current charge/discharge test, electrochemical impedance spectra (EIS), X-ray diffraction (XRD) and scanning electron microscopy (SEM). It is found that Fe2+ of LiFePO4 can not be readily oxidized in acidic solvent rather than in alkaline solvent. Moreover, when the LA132 displays faintly acid, the LiFePO4 cathode shows the most excellent performance, such as lower impedance, higher discharge capacity and more excellent cycling stability.关键词
LA132/pH值/磷酸亚铁锂/锂离子电池Key words
LA132/ pH value/ lithium iron phosphate/ lithium-iron batteries分类
信息技术与安全科学引用本文复制引用
石锺琪,黄明,杨克润,王文彬,邵进,邓正华..LA132的pH值对锂离子电池性能的影响[J].电源技术,2011,35(12):1487-1489,3.
