Enhanced Electrochemical Performance of Thick LiFePO4 Electrodes via Mechanofusion-Assisted Dual Carbon Coating

Un-Tae Kim; Myeong-Hun Jo; Hyo-Jin Ahn

doi:10.3740/MRSK.2026.36.5.193

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2026 Vol.36, Issue 5 Preview Page

Research Paper

Enhanced Electrochemical Performance of Thick LiFePO₄ Electrodes via Mechanofusion-Assisted Dual Carbon Coating 메카노퓨전 공정을 통한 이중 탄소 코팅된 LiFePO₄ 후막 전극의 전기화학적 성능 향상

27 May 2026. pp. 193-200

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Abstract

Lithium iron phosphate (LFP) is attracting attention for its low cost, excellent stability, and eco-friendliness. However, LFP has a relatively low theoretical capacity, operating voltage, and low electrical conductivity. To improve the disadvantages of LFP, LFP carbon coating technology is essential. In this paper, a double carbon coating was performed on LFP using a mechanofusion process. The synthesized carbon coating LFP was structurally analyzed, and the electrochemical performance was evaluated by manufacturing a thick electrode. The optimized composition, LFP@C5, exhibited the lowest charge transfer resistance (423 Ω), excellent rate performance of 21.3 mAh g^-1 at 5.0 C, and an improved capacity retention of 29.4 % after 100 cycles at 1.0 C. LFP@C5 has a continuous conductive network within the electrode that reduces electrode/electrolyte interfacial resistance and improves electrochemical performance in the thick film electrode. As a result, the mechanofusion-based dual carbon coating strategy enhances the cycling stability and high-rate performance of thick LFP electrodes.

Keywords

lithium-ion batteries

cathode

mechanofusion

surface coating

thick electrode

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 36
No :5
Pages :193-200
Received Date : 2026-04-15
Revised Date : 2026-04-30
Accepted Date : 2026-05-01
DOI :https://doi.org/10.3740/MRSK.2026.36.5.193

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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