Spent Yeast-Derived 3D Porous Carbon Skeleton as Low-Cost D-Mannitol Supporting Material for Medium Temperature Thermal Energy Storage

Autor: Xifeng Lv, Hui Cao, Guohua Li, Mengying Zhu, Wei Ji, Kai Wang, Changwei Zhang, Changsheng Su, Wenqiang Ren, Di Cai
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Materials; Volume 16; Issue 7; Pages: 2569
ISSN: 1996-1944
DOI: 10.3390/ma16072569
Popis: Shape-stable phase change materials (ss-PCMs) are extensively applied in renewable energy storage. The core for realizing high latent heat and good thermal stability of ss-PCMs is the designation of suitable supporting skeletons that can effectively preserve the PCMs from leaking out. In this study, ss-PCMs impregnated by D-mannitol were prepared using a waste yeast-derived carbon (YC) as the support material. YC possesses a large surface area (669.90 m2/g), which can provide sufficient phase transition space and nucleation sites for D-mannitol. The results indicated that a reduced supercooling of 44.76 °C for YC/D-mannitol ss-PCMs can be realized. The ss-PCMs also exhibited good cycling stability, with latent heat loss rates of 4.00% and 2.15% after 200 thermal cycles. We further demonstrate that YC provides restricted space for mannitol to inhibit the supercooling mechanism. The YC/D-mannitol ss-PCMs exhibited great promise for solar heat storage and industrial waste heat recovery in the medium temperature domain.
Databáze: OpenAIRE
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