Magnetically tightened form-stable phase change materials with modular assembly and geometric conformality features

Yongyu Lu, Dehai Yu, Haoxuan Dong, Jinran Lv, Lichen Wang, He Zhou, Zhen Li, Jing Liu () and Zhizhu He ()
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Yongyu Lu: China Agricultural University
Dehai Yu: China Agricultural University
Haoxuan Dong: China Agricultural University
Jinran Lv: China Agricultural University
Lichen Wang: Chinese Academy of Sciences
He Zhou: University of Science and Technology Beijing
Zhen Li: China Agricultural University
Jing Liu: Chinese Academy of Sciences
Zhizhu He: China Agricultural University

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract Phase change materials have attracted significant attention due to their promising applications in many fields like solar energy and chip cooling. However, they suffer leakage during the phase transition process and have relatively low thermal conductivity. Here, through introducing hard magnetic particles, we synthesize a kind of magnetically tightened form-stable phase change materials. They achieve multifunctions such as leakage-proof, dynamic assembly, and morphological reconfiguration, presenting superior high thermal (increasing of 1400–1600%) and electrical (>104 S/m) conductivity, and prominent compressive strength, respectively. Furthermore, free-standing temperature control and high-performance thermal and electric conversion systems based on these materials are developed. This work suggests an efficient way toward exploiting a smart phase change material for thermal management of electronics and low-grade waste heat utilization.

Date: 2022
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DOI: 10.1038/s41467-022-29090-1

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