Research on non-precious metal catalysts Research on non-precious metal catalysts. Research progress of non-precious metal catalysts for proton exchange membrane fuel cells Proton exchange membrane fuel cells (PEMFCs), with their high-tech advantages such as high efficiency, low noise, low temperature quick start, and zero pollution, are very suitable as the power source of new energy and environmentally friendly vehicles. At present, noble metal Pt-based catalysts are still the most commonly used catalysts for PEMFCs. Although PEMFCs technology has made major breakthroughs in recent years, its high price and shortcomings of easy poisoning are important reasons why PEMFCs are difficult to commercialize on a large scale. Studies have shown that under the premise of large-scale production, 46% of the cost of PEMFCs comes from the Pt-based catalysts used. In order to reduce the cost of PEMFCs, researchers have improved the catalyst structure to reduce Pt loading, increa...