Enhancing the thermal cyclic reliability of salt-based shape-stabilized phase change materials by in-situ SiO2–C interconnectivity in rice husk carbon

Li, Ziyuan; Wang, Yangjun; Wang, Huan; Zhang, Shuai; Shang, Zhen; Tian, Limei; Yan, Yuying

Abstract

Utilizing salt-based shape-stabilized phase change materials (ss-PCMs) for high-temperature thermal energy storage stands as a pivotal avenue in realizing carbon neutrality. However, the performance of ss-PCMs significantly deteriorates after thermal cycling. This study utilizes rice husk carbon (RHC) with an in-situ SiO2-C interconnected structure as the encapsulating material, along with expanded graphite (EG) and MgO, to encapsulate ternary chloride (TC). In this approach, RHC simultaneously acts as a thermal thermal conductivity materials (TCM) and a ceramic supporting material (CCM). The results showed that this encapsulation method can effectively encapsulate up to 65% of TC. The 60wt% TC-10wt% RHC-10wt% EG-20wt% MgO sample named 60T/10R/10E/20M is considered a close to optimal formulation in terms of thermal conductivity and phase change enthalpy. This ss-PCM has a thermal conductivity of 8.86 W•m −1 •K −1 , and phase change enthalpy of 153.6 J· g −1. The ss-PCMs maintained shape stability even after 1000 cycles, with minimal mass loss and thermal conductivity degradation compared to the non-RHC-added ss-PCM. This study has prepared high performance and reliability thermal storage materials through a green and low-cost approach.

Citation

Li, Z., Wang, Y., Wang, H., Zhang, S., Shang, Z., Tian, L., & Yan, Y. (2024). Enhancing the thermal cyclic reliability of salt-based shape-stabilized phase change materials by in-situ SiO2–C interconnectivity in rice husk carbon. Journal of Cleaner Production, 466, Article 142864. https://doi.org/10.1016/j.jclepro.2024.142864

• Journal Article Type: Article
• Acceptance Date: Jun 9, 2024
• Online Publication Date: Jun 14, 2024
• Publication Date: Aug 10, 2024
• Deposit Date: Jun 14, 2024
• Publicly Available Date: Jun 15, 2026
• Journal: Journal of Cleaner Production
• Print ISSN: 0959-6526
• Electronic ISSN: 1879-1786
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 466
• Article Number: 142864
• DOI: https://doi.org/10.1016/j.jclepro.2024.142864
• Keywords: Rice husk; Thermal cyclic reliability; Ternary chloride; Thermal energy storage
• Public URL: https://nottingham-repository.worktribe.com/output/36015544