skip to main content

Caltech Postdocs Launch – March 15, 2024

Friday, March 15, 2024
12:00pm to 1:00pm
Add to Cal
Caltech Hall 9th Floor
  • Public Event

Dr. Kay Xia, CCE

Heat-Electricity Conversion using Supramolecular Host-Guest Chemistry


Heat-Electricity Conversion using Supramolecular Host-Guest Chemistry

Because of the thermodynamic relationship ΔG = ΔH – TΔS, nonzero reaction entropy enables conversion between heat (T) and work (ΔG). Electrochemical entropy is the basis for thermally regenerative electrochemical cycles (TRECs), which utilize reversible electrochemical processes with large molar entropy change for thermogalvanic waste-heat harvesting and electrochemical cooling, among other potential applications. There are few existing ways to rationally tune reaction entropy, despite this property's great utility. An aqueous electrochemically controlled supramolecular host-guest system demonstrates a large and synthetically tunable redox entropy change, enabling rational optimization of the system's ΔS, and demonstrating a new strategy to overcome theoretical limits on ion solvation reorganization entropy.

For more information, please contact Prabhat Prakash by email at [email protected].