Evaluation of waste corn cob and copper slag for production of novel leakage-free composite phase change material with ımproved thermal energy storage
Scientific Reports, cilt.16, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 16 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1038/s41598-026-52578-5
- Dergi Adı: Scientific Reports
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Chemical Abstracts Core, EMBASE, MEDLINE, Directory of Open Access Journals, Zoological Record, Academic Search Ultimate (EBSCO), Natural Science Collection (ProQuest), Biological Science Database (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Health Research Premium Collection (ProQuest)
- Anahtar Kelimeler: Copper Slag, Energy and Energy Efficiency, Phase Change Material, Thermal Energy Storage, Waste Corn Cob
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Karadeniz Teknik Üniversitesi Adresli: Evet
Özet
In this study, a leakage-free and thermally stable composite phase change material (PCM) was developed using waste corn cob (CC) and waste copper slag (CS) to evaluate renewable and waste biomass resources. MP-MS eutectic mixture was impregnated into a corn cob-derived carbon structure, and then, by adding CS at different ratios (1%, 3%, and 5%), the thermal performance was optimized. DSC analyses revealed that the melting temperature and melting enthalpy of the CC/MP-MS (35%) composite PCM were 22.9 °C and 81.4 J/g, respectively. Small changes were observed in these values with the addition of CS, but only a 1–2% decrease in enthalpy was observed. Furthermore, after 650 cycles of thermal cycling testing, only a limited decrease in the thermal performance of the composite PCMs was observed, demonstrating high thermal stability and cyclic durability. Thermal conductivity values increased significantly with the addition of CS. While the MP-MS eutectic mixture had a limited thermal conductivity of only 0.17 W/mK, this value reached 0.42 W/mK with the addition of 5% CS. IR thermal camera images demonstrate that increasing the CS content accelerates heat transfer and improves temperature distribution. Specifically, after a 25-minute heating period, the surface temperature of the composite PCM containing 5% CS was approximately 9 °C higher than that of the pure composite.