Recent Materials Developments for Thermal Energy Storage Based on Thermo-Chemical Reactions

Dear Colleagues,

I invite you to contribute to this Special Issue and to report on the latest developments in materials and materials technology in the field of thermal energy storage and connected technical systems. As we all know, in order to fight the urgent threat of climate change and to meet the objectives of Paris Agreement to limit the increase in the global average temperature to well below 2 °C from 2015, it is necessary to enforce efforts towards a (complete) transition from a fossil-fuel-based to a renewable-based energy society. In this transition, not only does the development of renewable energies and efficient energy systems need to be accelerated, but energy storage is also a key component to matching energy demand and energy supply in terms of time and dimension. Storage is particularly crucial for thermal energy systems, which often offer their highest peak during periods of low demand, with the high solar irradiation in summer and high heat demand in winter providing examples of a mismatch in energy supply. As the majority of residential energy consumption in European households is used for space heating and hot-tap water generation, a method to store carbon-free heat would have a great impact on reducing the overall carbon fingerprint. Promising concepts to store sustainable heat are based on thermochemical reaction. The solid materials involved in these reactions are called thermochemical materials (TCMs). Key advantages with respect to techniques like sensible heat storage and phase-change materials (PCM) include a nearly loss-free storage period and a high energy density. Since there are rapid developments in this field, I invite you to report on your recent findings and developments in this Special Issue.

Dr. Hartmut R. Fischer
Guest Editor

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• thermochemical heat storage
• system design
• material development
• ready-to-use
• demonstrator