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| Preparation and application of exfoliated graphite by room-temperature exfoliation |
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Received:July 18, 2025
Revised:August 15, 2025
Accepted:August 26, 2025
Published Online:April 30, 2026
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| DOI：10.3969/j.issn.1005-7854.2025.05.002 |
| KeyWord:room temperature exfoliation;exfoliated graphite;oil sorption;heat conduction;lithium-ion battery;electrochemical exfoliation |
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1.School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing)
, Beijing 100083, China;2.School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;3.Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China |
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| Abstract: |
| Natural graphite is an important strategic mineral resource in China. Its deep-processed products, flexible graphite, are widely used in key fields such as energy, electronics and chemical engineering. However, the exfoliated graphite prepared by the traditional high-temperature exfoliation (HTEG) method leads to damage to the graphite layer structure and an increase in defects. This seriously affects the intrinsic electrical/thermal conductivity and mechanical flexibility of the material, limiting its application in high-end flexible electronic devices, efficient thermal management and other fields. Room-temperature exfoliation preparation technology using sulfuric acid-hydrogen peroxide system can efficiently intercalate sulfuric acid and hydrogen peroxide molecules between graphite layers at low temperatures, followed by mild exfoliation at room temperature, thereby better preserving the lamellar structure and excellent conductive/thermal properties of graphite. This article systematically reviews the reaction mechanisms, structural control, and application advancements of room-temperature exfoliation technology, while providing a comparative analysis of performance differences between this method and traditional high-temperature exfoliation approaches. The study offers theoretical guidance and technical solutions for developing efficient and environmentally friendly deep-processing technologies for graphite. |
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