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Document IIF

Beyond physical segregation: the overlooked role of hydrolysis in salt hydrate phase-change materials. 

Numéro : 0008

Auteurs : TONIOLO D., EIHOLZER J., MARTINEZ-GARCIA J., RAVOTTI R.

Résumé

Salt hydrates are widely studied as phase-change materials (PCMs) for medium-temperature thermal energy storage and cooling systems; however, their performance is limited by segregation phenomena that reduce cycling stability. Segregation has traditionally been attributed to incongruent melting, density-driven phase separation, and redistribution of crystallisation water during melting–solidification cycles. Here we revisit a known chemical process whose role in PCM degradation has largely been overlooked: hydrolysis-related reactions involving crystallisation water. Using X-ray diffraction (XRD) and differential scanning calorimetry (DSC), we evaluated the stability of selected first-row transition-metals salts for thermal energy storage applications.

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Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Beyond physical segregation: the overlooked role of hydrolysis in salt hydrate phase-change materials. 
  • Identifiant de la fiche : 30035355
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 15th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings:  Xi'an China, September 16-18, 2026.
  • Date d'édition : 09/2026
  • DOI : http://dx.doi.org/10.18462/iir.pcm.2026.0008

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