Composite phase change material with ultra-high thermal stability by constructing a three-dimensional carbonaceous framework for thermal management applications

• Published in: Chemical engineering science Vol. 299; p. 120525
• Main Authors: Xie, Jiekai, Xu, Weifu, Li, Xinxi, Yang, Xiaoqing, Zhang, Guoqing
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 05.11.2024
• Subjects: Electronic devices; Phase change material; Thermal management; Thermal stability; Three-dimensional carbonaceous nano-framework; Three-dimensional carbonaceous nano-framework; Thermal management; Phase change material; Electronic devices; Thermal stability
• ISSN: 0009-2509
• DOI: 10.1016/j.ces.2024.120525

•A CPCM with a 3-D carbonaceous nano-framework structure is designed and prepared.•The carbonaceous framework stacks into a developed continuous mesoporous structure.•The carbonaceous framework endows the CPCM with ultra-high thermal stability.•The obtained CPCM has suitable thermo-physical properties for thermal management.•The CPCM shows superior cooling performances for simulative chips. Phase change materials (PCMs) show great potential in thermal management (TM) applications, but still suffer from the poor thermal stability, leading to leakage, shape change and thermal decomposition of the PCM module under harsh working conditions. Herein, we develop a composite PCM (CPCM) with ultra-high thermal stability by constructing a three-dimensional (3-D) carbonaceous nano-framework (CF). The 3-D CF stacks into a continuous mesoporous structure, which provides intensive capillary condensation to fix liquid-state PCM, preventing leakage under high working temperature. On the other hand, the ultra-high thermal stability of CF endows the obtained CF-CPCM with ultra-high heat-tolerance up to 300 °C without any deformation. Combining with the suitable thermo-physical properties, the CF-CPCM demonstrates great performance in TM. For example, the maximum temperature of the heater with CF-CPCM plate is reduced from 79.8 and 92.3 °C to 64.9 and 77.7 °C under the heating powers of 2.4 and 3.5 W, respectively.