New class of fuel cells offer increased flexibility, lower cost
Wider temperature tolerance is based on ion-pair-coordinated polymers
A new class of fuel cells based on a newly discovered polymer-based material could bridge the gap between the operating temperature ranges of two existing types of polymer fuel cells, a breakthrough with the potential to accelerate the commercialization of low-cost fuel cells for automotive and stationary applications.
“Polymer-based fuel cells are regarded as the key technology of the future for both vehicle and stationary energy systems.” — Yu Seung Kim
A Los Alamos National Laboratory team, in collaboration with Yoong-Kee Choe at the National Institute of Advanced Industrial Science and Technology in Japan and Cy Fujimoto of Sandia National Laboratories, has discovered that fuel cells made from phosphate-quaternary ammonium ion-pair can be operated between 80°C and 200°C with and without water, enhancing the fuel cells usability in a range of conditions. The research is published in the journal Nature Energy.
“Polymer-based fuel cells are regarded as the key technology of the future for both vehicle and stationary energy systems,” said Yu Seung Kim, the project leader at Los Alamos. “There’s a huge benefit to running fuel cells at the widest possible operating temperature with water tolerance. But current fuel-cell vehicles need humidified inlet streams and large radiators to dissipate waste heat, which can increase the fuel-cell system cost substantially, so people have looked for materials that can conduct protons under flexible operating conditions. It is very exciting that we have now found such materials.”
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