Comparison of Conductive Materials for LiFePO4 Electrodes: Biomass-Derived Activated Carbon and Carbon Black

Chang Hun Jeon; Sang Jun Lee; Dong Park Lee; Joo-Hyung Kim

doi:10.3740/MRSK.2024.34.11.577

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2024 Vol.34, Issue 11 Preview Page Next Page

Research Paper

Comparison of Conductive Materials for LiFePO₄ Electrodes: Biomass-Derived Activated Carbon and Carbon Black LiFePO₄ 전극의 도전재 비교: 바이오매스 유래 활성탄과 탄소 블랙

27 November 2024. pp. 577-583

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Abstract

Super P (SP) is a conductive carbon black that significantly enhances the electrical conductivity of various types of electrodes, making it a widely preferred conductive agent in lithium-ion batteries. By contrast, activated carbon (AC), originally used in capacitors due to its porous structure, is expected to contribute to electrochemical performance through its enhanced interaction with lithium ions. First, the physical properties of both materials were analyzed through various characterization techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM) to confirm the increase in electrochemical properties through the combination of SP and AC. Furthermore, the microstructure and electrical properties of the LiFePO₄(LFP) electrode were analyzed, to determine the impact on battery performance. With a 1.15 M LiPF₆ in an ethylene carbonate/diethyl carbonate (EC/DEC) electrolyte, the results indicated that SP-only electrodes exhibited the highest conductivity and lowest surface resistance, making them the most effective at maintaining stable electrochemical performance. In contrast, electrodes with only AC showed higher resistance, demonstrating that SP remains superior in improving LFP electrode conductivity, ultimately optimizing lithium-ion battery performance.

Keywords

activated carbon

electrical conductivity

LiFePO₄

carbon black

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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 : 34
No :11
Pages :577-583
Received Date : 2024-10-10
Revised Date : 2024-10-24
Accepted Date : 2024-10-24
DOI :https://doi.org/10.3740/MRSK.2024.34.11.577

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

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