新しいハイブリッド材料で熱エネルギー貯蔵の効率化を目指す(Researchers develop hybrid materials for more efficient thermal energy storage)

2026-10-09 テキサスA&M大学

米国テキサスA&M大学の研究チームは、熱エネルギーを効率的かつ安定的に蓄える新しい複合材料「サロゲル(Salogel)」を開発した。この材料は、熱を吸収・放出する能力に優れた無機塩水和物と、材料の形状や構造を維持する高分子ネットワークを組み合わせたものである。塩水和物は大量の熱を蓄えられる一方、単独では漏出や繰り返し使用による劣化、過冷却などが課題となる。研究チームは、高分子と塩水和物の分子レベルでの相互作用を調べ、高分子構造が塩水和物の結晶化過程を変化させ、過冷却を抑制することを明らかにした。この成果は、蓄熱能力を維持しながら、材料の安定性や耐久性を高める設計につながる。応用先として、省エネルギー建築の冷暖房、蓄電池、スマートウィンドウ、電子機器の温度制御、着氷防止コーティングなどが期待される。今後は、機械的強度の向上や3Dプリンティングによる加工、電気化学的エネルギー変換への応用が検討されている。

新しいハイブリッド材料で熱エネルギー貯蔵の効率化を目指す(Researchers develop hybrid materials for more efficient thermal energy storage)
A gummy bear-shaped salogel, designed by Dr. Peiran Wei, symbolizes a new class of polymer-salt hydrate hybrid materials developed by researchers in the Texas A&M University Department of Materials Science and Engineering. Credit: Soft Matter Facility at Texas A&M University

<関連情報>

ハイブリッドポリマー・無機塩水和物材料:蓄熱用途およびそれ以降の応用 Hybrid Polymer–Inorganic Salt Hydrate Materials: Applications for Heat Storage and Beyond

Kartik Kumar Rajagopalan;S. M. Ashik Abedin;Peiran Wei;Svetlana A. Sukhishvili
ACS Applied Materials & Interfaces  Published:June 01, 2026
DOI:https://doi.org/10.1021/acsami.6c07502

Abstract

Polymer–salt hydrate hybrid materials called salogels combine the key properties of polymers, such as flexibility, with the high heat of fusion and inflammability and high salt content of the inorganic salts. These features make them promising materials for thermal energy storage and conversion, personal thermal management, anti-icing, and shape-morphing applications. However, further development is constrained by supercooling issues, poor control of mechanical properties, and limited reprocessability and scalability. This perspective briefly reviews recent applications of salogels, highlights the importance of advancing understanding of the specific mechanisms of interactions between polymer networks and inorganic salt ions to overcome these challenges, and outlines future directions in the development of polymer–salt hydrate hybrid materials. We suggest that by leveraging understanding of polymer–salt hydrate interactions, future research can focus on the rational development of processable polymer networks with controlled temperature-responsive gelation for specific salt hydrate or salt hydrate eutectics and the ability to suppress supercooling for robust thermal and mechanical performance. The perspective further identifies the importance of recruiting ML and additive manufacturing techniques for the accelerated development of polymer–salt hydrate hybrid materials of diverse chemistry and shapes for broader applications, which combine thermal energy storage with applications exploiting ionic mobility, such as electrochemical conversion, supercapacitors, and polymer electrolytes.

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