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Study on the preparation of high adsorption activated carbon material and its application as phase change energy storage carrier material

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Abstract

A three-dimensional porous activated carbon (HSAC) with high adsorption properties was prepared by using hemp straw as raw material and phosphotungstate as catalyst through low-temperature hydrothermal carbonization combined with KOH high-temperature activation technology. The maximum specific surface area of activated carbon material was 2310.1 m2 g–1, and the maximum adsorption capacity of methylene blue was 2424.2 mg g–1. A series of PEG/HSAC phase change energy storage materials with different mass ratios were prepared by physical blending impregnation by using polyethylene glycol (PEG) as phase change material and porous activated carbon as carrier. Through the study of activated carbon pore structure, energy storage material structure analysis, and DSC comparative analysis, the experimental results showed that PEG and HSAC mass ratio (60/40) was the best. The latent heat of the composite was 51.5 J g–1, and the phase change temperature was 58.5 ℃. No obvious leakage occurred after 20 heat cycles. Composite phase change materials had potential applications in the field of intelligent buildings.

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Authors and Affiliations

  1. College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin Economic-Technological Development Area, Tianjin, 300457, People’s Republic of China

    Xiao-Ming Zhou & Yi-Fan Liu

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  1. Xiao-Ming Zhou
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  2. Yi-Fan Liu
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Correspondence to Xiao-Ming Zhou.

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Zhou, XM., Liu, YF. Study on the preparation of high adsorption activated carbon material and its application as phase change energy storage carrier material. J Therm Anal Calorim 147, 8169–8176 (2022). https://doi.org/10.1007/s10973-021-11122-5

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  • DOI: https://doi.org/10.1007/s10973-021-11122-5

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