ArticleJournal of the American Chemical Society2026
Gas-Responsive Metal-Organic Frameworks for Adaptive Thermal Energy Storage with Tunable Charge-Discharge Temperatures.
Article in Journal of the American Chemical Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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12 authors.
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Abstract
One of the major challenges for thermal energy storage (TES) systems based on phase change materials (PCMs)─a key technology for energy decarbonization─is achieving dynamical tunability of their charge and discharge temperatures (Tcharge, Tdischarge). This capability would enable a single material to operate effectively across varying ambient conditions (e.g., different times of day, seasons, or climates) without requiring the use of multiple TES materials. In this work, we present a gas-responsive TES solution based on breathing caloric MOFs, particularly MOF-508b, in which transition temperatures can be widely tuned from -30 to 120 °C (243 to 393 K) by adjusting the surrounding CO2 pressure from 5 to 25 bar under isobaric conditions. More importantly, we demonstrate that this method allows precise control over the thermal hysteresis (|Tcharge - Tdischarge|) and can even reverse the transition temperatures (Tcharge < Tdischarge), which could be highly advantageous for temperature-driven TES applications. These findings pave the way for adaptive thermal technologies in which a single material can respond to different ambient temperatures and diverse storage needs, from cold storage to medium-high-temperature applications. We anticipate that this gas-responsive behavior is not exclusive to MOF-508b and encourage the exploration of other materials exhibiting similar tunable characteristics for adaptive TES applications.
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