raw · papers · ingested 2026-06-28
Ionocaloric refrigeration cycle (Science 2023, Berkeley Lab)
Source: https://www.science.org/doi/10.1126/science.ade1696
Source: Science 2023 (DOI 10.1126/science.ade1696) + Berkeley Lab News Center writeup. Credibility: High (peer-reviewed, Science). Confidence: medium-high (Science paywalled; details via LBL).
Key points
- New driver: electrochemical ion addition/removal shifts a material’s melting point → drives a solid↔liquid phase change for cooling.
- Demonstrated ΔT = 25 °C using <1 V — a greater lift than other caloric technologies.
- Materials: sodium iodide + ethylene carbonate (a Li-ion battery solvent).
- Key advantage: the liquid phase is pumpable, easing heat in/out — avoids barocaloric’s high-pressure hardware AND fully-solid caloric’s heat-transfer bottleneck.
- Calculated to potentially match or exceed today’s gaseous refrigerants; zero high-GWP gases.
Relevance
The newest emerging member for solid-state-cooling: a near-solid/electrochemical route that keeps a pumpable working fluid — the heat-transfer advantage the fully-solid caloric methods lack.