高熱および光熱変換性能を持つ金属-有機ネットワークベースの複合相変化材料
Dian Wei1,2, Yi Wang1, Shuoshuo Yu1
1College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China.
Materials (Basel, Switzerland)
|August 28, 2025
まとめ
この研究では,ポリエチレングリコール (PEG) と新しい金属有機ネットワーク (CFK) を使用した形状安定化複合相変化材料 (PCM) が開発されました. 複合PCMは,漏れを効果的に削減し,熱管理アプリケーションの改善のために熱伝導性を高めます.
科学分野:
- 材料科学
- 化学工学
- ナノテクノロジー
背景:
- 固体-液体相変化材料 (PCM) は熱管理に不可欠ですが,漏れと低熱伝導性に苦しんでいます.
- 形状安定化PCMの開発は,これらの制限を克服し,より広範なアプリケーションを可能にするために不可欠です.
研究 の 目的:
- 新しい形状安定化複合PCMを製造し,熱性能を向上させ,漏れを軽減する.
- この複合PCMの可視光による熱エネルギー変換の可能性を調査する.
主な方法:
- ポリエチレングリコール (PEG) と金属有機ネットワーク (CFK) を組み合わせてPCMを合成するために,インシット1ポットプロセスを採用した.
- CFKは,炭酸化多壁ナノチューブ (CMWCNT),FeCl3,ケヴラーナノファイバー (KNF) から合成された.
- 複合PCMの形態学,組成,および熱物理的特性 (漏れ率,熱伝導性,潜在熱,光吸収,光熱変換効率,サイクル安定性) を体系的に評価した.
主要な成果:
- 89.9%のPEGを含む複合PCMは,0. 76%の漏れ率を大幅に減少させた.
- 純粋なPEGと比較して,熱伝導性が170. 5%向上しました.
- 147.9 J·g−1 (融合) と143.7 J·g−1 (結晶) の高い潜在熱値が記録された.
- 複合PCMは優れた光吸収,光熱変換効率83.4%と優れたサイクル安定性を示した.
結論:
- 開発された複合PCMは,優れた熱エネルギー貯蔵と放出能力を維持しながら,漏れの問題に効果的に対処します.
- この材料は,可視光による熱エネルギー変換の応用において非常に有望であり,高性能PCMのための新しい戦略を提供します.
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