Jump to main content
Jump to site search


Synthesis of porous carbon from cotton using Mg(OH)2 template for form-stabilized phase change materials with high encapsulation capacity, transition enthalpy and reliability

Abstract

Owing to the inherent low thermal transport performance, stability and leakage of organic phase change materials (PCMs), porous carbon stabilized PCMs were designed via a facile solution impregnation method. The porous carbons with some graphitic characteristics, high specific surface area and large mesopore proportion were synthesized from sustainable and commercially available dewaxed cotton with Mg(OH)2 created from MgO precursor, exhibited a fine framework structure with considerable volumetric expansion after acid leaching relative to the carbon prepared without the presence of template. In addition, 1-hexadecanol was used as a PCM for energy storage material in composite materials. The supporting materials with different carbonization temperatures of 700 oC, 800 and 900 oC exhibited large encapsulation capacity up to 85%, 90% and 88% with the corresponding transition enthalpy achieving 107.9%, 109.4%, 109.8% that of expected storage capacity of composite PCMs, correspondingly. Meanwhile, the as-prepared composites revealed improved thermal conductivity and thermal stability without any seepage above pure PCM melting temperature. Factors like graphitic characteristics, specific surface area, interconnected pores and reversible hydrogen bonds played a pivotal role for the improved thermal performance of composite materials. In addition, the composites showed high cycling performance after 200 cycles of melting/crystalline without a significant change in transition enthalpies and improved supercooling extent, which is a promising candidate for large-scale applications.

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Feb 2018, accepted on 12 Apr 2018 and first published on 14 Apr 2018


Article type: Paper
DOI: 10.1039/C8TA01672K
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  •   Request permissions

    Synthesis of porous carbon from cotton using Mg(OH)2 template for form-stabilized phase change materials with high encapsulation capacity, transition enthalpy and reliability

    D. G. Atinafu, W. Dong, C. Wang and G. Wang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA01672K

Search articles by author

Spotlight

Advertisements