Structure and Soft-Packed Cell Performance of Nano-Particle LiFePO4 Prepared by Spray-Drying Method

Ling Li Zuo; Lin Chen; Shuo Yin; Ji Yun Liu; Cheng Lu; Meng Wang; Yi Qiao Wang; Li Bo Zhang; Yang Zhang; Yun Bo Chen

doi:10.4028/www.scientific.net/MSF.1003.268

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HomeMaterials Science ForumMaterials Science Forum Vol. 1003Structure and Soft-Packed Cell Performance of...

Structure and Soft-Packed Cell Performance of Nano-Particle LiFePO₄ Prepared by Spray-Drying Method

Abstract:

Well-crystallized and nanosized LiFePO₄/C composite have been successfully synthesized by spray-drying under N₂ atmosphere. The morphology, physical and electrochemical properties of the LiFePO₄/C were tested and analyzed. The charge transfer resistances (Rct) and chemical diffusion coefficients of lithium ions (D_Li₊) in LiFePO₄/C was systematically tested by EIS. The results show that the lithium ions diffusion coefficients obtained from EIS is 1.58×10^-14 cm²·s^-1. The assembled soft-packed cell with LiFePO₄/C show better rate capability and cycling stability. The average capacity retention of LiFePO₄/C soft-packed cell decreases to 100%, 98.9%, 96.5%, 92.4%, and 90.3% when current rate increases to 0.3, 0.5, 1, 2, and 3C, respectively. The capacity retention after 80 cycles is retained at more than 99%.

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Materials Science Forum (Volume 1003)

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268-274

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https://doi.org/10.4028/www.scientific.net/MSF.1003.268

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July 2020

Authors:

Ling Li Zuo, Lin Chen*, Shuo Yin, Ji Yun Liu, Cheng Lu, Meng Wang, Yi Qiao Wang, Li Bo Zhang, Yang Zhang, Yun Bo Chen

Keywords:

Electrochemical Properties, Lithium Iron Phosphate, Soft-Packed Cell

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