High Performance Pyrophosphate Membranes for Intermediate Temperature Fuel Cells
An innovative regenerated pyrophosphate electrolyte membrane for fuel cells and method of fabricating thereof. An intermediate temperature fuel cell (IT-FC) is a type of fuel cell that operates at temperatures between 200 and 300°C. IT-FCs provide high tolerance for impurities, fuel flexibility, and low-cost construction. Pyrophosphates are commonly used as low-cost electrolyte membrane materials in fuel cells. However, pyrophosphates have decreased proton conductivity at the operating temperatures of IT-FCs. Our researchers have developed a technology to restore the efficacy of pyrophosphate membranes for IT-FCs. The method of restoring pyrophosphate membranes includes integrating a heteropolyacid material into the membrane, which minimizes proton conductivity loss. This method produces pyrophosphate membranes that are highly proton conductive, highly selective, and mechanically strong.
  • Intermediate-temperature fuel cells (IT-FCs), which can be used for portable electric generators, large stationary power systems, zero-emission electric automobiles, and green micro-grids
Problems Addressed
  • Developing a membrane that has high proton conductivity for use in IT-FCs
  • Restoring the mechanical strength and conductivity of pyrophosphate membranes in order to withstand the temperatures of IT-FCs
Competitive Advantages
  • Successfully recovers the proton conductivity of pyrophosphate membranes for use in IT-FCs
  • Does not degrade the mechanical strength of the membrane in the restoring process
  • Affordable process to integrate into the production of electrolyte membranes
  • Using this technology, IT-FCs are more commercially feasible
  • US 2017/039549
  • Bose, A. B., et al. (2016). An Approach for Restoring the Proton Conductivity of Sintered Tin Pyrophosphate Membranes for Intermediate Temperature Fuel Cells. Journal of Power Sources, 307
Case ID
Dr. Anima Bose
Associate Professor Department of Engineering Technology