Fuel cells, which convert the chemical energy contained in hydrogen and oxygen molecules into electricity plus heat and water, are environmentally friendly power sources. The new technology in the field, protonic ceramic fuel cells (PCFCs), which are based on proton-conducting electrolytes, are promising because of their low pollutant emissions and high thermodynamic efficiencies. However, the biggest obstacle to the commercialization of PCFCs is the lack of high-performance, low-cost cathode materials.
Currently, cobalt-based perovskites are the most widely used cathode materials. However, the unstable phases, poor thermomechanical compatibility with other PCFC components, high cost, and unsatisfactory performance limit the viability of these materials.
Now, researchers at the Hong Kong University of Science and Technology (HKUST) have designed an innovative iron-based cathode…
Iron-based cathode achieves record performance for protonic ceramic fuel cells
