Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat Storage

Thermal energy storage based on gas–solid reversible chemical reactions offers higher‐energy storage densities than commercially implemented sensible heat‐storage systems. Despite the promise, it is a much less mature technology, and several aspects still require further improvement. Among the wide...

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Main Authors: Alfonso J. Carrillo, José Manuel Serra
Format: Article
Language:English
Published: Wiley-VCH 2025-04-01
Series:Advanced Energy & Sustainability Research
Subjects:
Online Access:https://doi.org/10.1002/aesr.202400317
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author Alfonso J. Carrillo
José Manuel Serra
author_facet Alfonso J. Carrillo
José Manuel Serra
author_sort Alfonso J. Carrillo
collection DOAJ
description Thermal energy storage based on gas–solid reversible chemical reactions offers higher‐energy storage densities than commercially implemented sensible heat‐storage systems. Despite the promise, it is a much less mature technology, and several aspects still require further improvement. Among the wide variety of reversible thermochemical reactions that show potential for thermal energy storage, reduction–oxidation reactions of metal oxides are promising since air can be employed as reactant without the need of costly pressurized storage units. In this perspective, the fundamental aspects of metal oxides for redox thermochemical heat storage are explored, paying special attention to the latest developments that will assure high energy‐storage density and multicycle stability. The design of more efficient redox materials remains a key aspect in thermochemical heat storage; however, the development of high‐temperature reactors and their implementation in concentrated solar power plants also plays an important role in the advancement of this technology. All these interrelated elements together with techno‐economic assessments, a paramount tool in terms of materials choice, are also discussed.
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spelling doaj-art-a50e03d8d8f946368804623b79ce36b72025-08-20T01:51:42ZengWiley-VCHAdvanced Energy & Sustainability Research2699-94122025-04-0164n/an/a10.1002/aesr.202400317Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat StorageAlfonso J. Carrillo0José Manuel Serra1Instituto de Tecnología Química Universitat Politècnica de València‐Consejo Superior de Investigaciones Científicas Avenida Los Naranjos s/n 46022 Valencia SpainInstituto de Tecnología Química Universitat Politècnica de València‐Consejo Superior de Investigaciones Científicas Avenida Los Naranjos s/n 46022 Valencia SpainThermal energy storage based on gas–solid reversible chemical reactions offers higher‐energy storage densities than commercially implemented sensible heat‐storage systems. Despite the promise, it is a much less mature technology, and several aspects still require further improvement. Among the wide variety of reversible thermochemical reactions that show potential for thermal energy storage, reduction–oxidation reactions of metal oxides are promising since air can be employed as reactant without the need of costly pressurized storage units. In this perspective, the fundamental aspects of metal oxides for redox thermochemical heat storage are explored, paying special attention to the latest developments that will assure high energy‐storage density and multicycle stability. The design of more efficient redox materials remains a key aspect in thermochemical heat storage; however, the development of high‐temperature reactors and their implementation in concentrated solar power plants also plays an important role in the advancement of this technology. All these interrelated elements together with techno‐economic assessments, a paramount tool in terms of materials choice, are also discussed.https://doi.org/10.1002/aesr.202400317concentrated solar poweroxidesthermal energy storagethermochemical cycles
spellingShingle Alfonso J. Carrillo
José Manuel Serra
Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat Storage
Advanced Energy & Sustainability Research
concentrated solar power
oxides
thermal energy storage
thermochemical cycles
title Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat Storage
title_full Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat Storage
title_fullStr Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat Storage
title_full_unstemmed Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat Storage
title_short Recent Progress on Redox Materials for High‐Temperature Thermochemical Heat Storage
title_sort recent progress on redox materials for high temperature thermochemical heat storage
topic concentrated solar power
oxides
thermal energy storage
thermochemical cycles
url https://doi.org/10.1002/aesr.202400317
work_keys_str_mv AT alfonsojcarrillo recentprogressonredoxmaterialsforhightemperaturethermochemicalheatstorage
AT josemanuelserra recentprogressonredoxmaterialsforhightemperaturethermochemicalheatstorage