DOAJ Open Access 2021

Combined First-principles and Experimental Studies of a V-doped LiFePO4/C Composite as a Cathode Material for Lithium-ion Batteries

Qunfang Zhao Shuqiong Zhang Chang Wang Guanghui Jiang Minyi Hu +2 lainnya

Abstrak

As a promising cathode material for lithium-ion batteries (LIBs), olivine-structured LiFePO4 has been increasingly studied due to its high capacity, excellent thermal stability, cycling stability and environmental friendliness. Nevertheless, the main challenge of LiFePO4 is its poor conductivity and Li+ diffusion coefficient. Herein, a V-doped LiFePO4/C composite is prepared via a solid-state method. The electronic structures of the samples are obtained by first-principles calculations based on density functional theory. V2 exhibits enhanced electrochemical performance, demonstrating discharge capacities as high as 155.6, 150.2, 136.0, 122.4 and 93.1 mA h g-1 at 0.1, 0.2, 0.5, 1.0 and 3.0C, respectively, and approximately 100% capacity retention after 100 cycles at 1.0C.

Topik & Kata Kunci

Industrial electrochemistry Physical and theoretical chemistry

Penulis (7)

Qunfang Zhao

Shuqiong Zhang

Chang Wang

Guanghui Jiang

Minyi Hu

Zhaoyong Chen

Quansheng Ouyang

Format Sitasi

APA MLA BibTeX

Zhao, Q., Zhang, S., Wang, C., Jiang, G., Hu, M., Chen, Z. et al. (2021). Combined First-principles and Experimental Studies of a V-doped LiFePO4/C Composite as a Cathode Material for Lithium-ion Batteries. https://doi.org/10.20964/2021.05.01

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Informasi Jurnal

Tahun Terbit: 2021
Sumber Database: DOAJ
DOI: 10.20964/2021.05.01
Akses: Open Access ✓