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[in Journal: Journal of Porphyrins and Phthalocyanines] AND [Keyword: Lifepo4] (1)	31 Mar 2025	Run

articleNo Access
Microstructure and electrochemical performance of LiFePO₄ cathode materials modified with binuclear metal aminophthalocyanines
- Yuanyuan Su,
- Feifei Xu,
- Ruiqiong Wang,
- Ronglan Zhang, and
- Jianshe Zhao
Journal of Porphyrins and Phthalocyanines01 Dec 2018
Preview Abstract
The monodispersed LiFe ${_{1 -}}_{x}$ ${_{1 -}}_{x}$ M $_{x}$ $_{x}$ PO₄/C [ $x$ $x$ $\approx$ $\approx$ 0.0040; $M$ $M$ = Mn $^{2 +}$ $^{2 +}$ , Co $^{2 +}$ $^{2 +}$ , Ni $^{2 +}$ $^{2 +}$ , Cu $^{2 +}$ $^{2 +}$ , Zn $^{2 +}$ $^{2 +}$ ] nanocomposites obtained by LiFePO₄ modified with binuclear metal aminophthalocyanines (M₂(PcTa)₂O and M₂(PcTa)₂C(CF $_{3})_{2})$ $_{3})_{2})$ are utilized as positive electrode materials for lithium ion batteries. The preparation method for these nanocomposites is a controllable solvothermal method using a mixture of ethylene glycol and $N$ $N$ , $N$ $N$ -dimethylformamide as the solvent. The microstructure and electrochemical properties of the different nanocomposites are discussed and compared. The results show that the LiFePO₄ samples modified with M₂(PcTa)₂C(CF $_{3})_{2}$ $_{3})_{2}$ can improve the initial discharge specific capacity of the lithium ion battery up to 154.2 mAh.g $^{- 1}$ $^{- 1}$ at the rate of 0.1 C, and 93.5% of the initial discharge capacity could be retained after 50 cycles. This research shows that the proposed process can enhance the electrochemical performance of high power LiFePO₄ for lithium ion batteries.