A fuel cell is a non-polluting energy source. It converts chemical energy into electrical energy with high efficiency and zero emissions. Fuel cell vehicles, trucks and buses will enable people to travel long distances with convenient fuel supply and a less carbon footprint. Researchers at the University of Delaware are working on a technology to make fuel cells cheaper and more powerful, so that fuel cell vehicles can one day become a viable option for everyone. Traditional fuel cell research usually focuses on hydrogen fuel cells, but UD researchers are designing fuel cells that utilize ammonia. In a new report published in the journal Joule, a team of engineers at the Center for catalyst Science and Technology found that among fuels produced from renewable energy sources, ammonia per gallon of fuel The lowest cost. As a liquid fuel based on nitrogen, ammonia is cheaper to store and distribute than hydrogen, and it avoids carbon dioxide emissions from other liquid fuels. The capture cost of other liquid fuels is very high. One of the lead authors of the study, Brian Setzler, a postdoctoral assistant at the University of Washington, said. However, the challenge is that ammonia does not work in proton exchange membrane fuel cells; ammonia is more difficult to oxidize than hydrogen, which results in ammonia fuel cells producing less energy than hydrogen fuel cells. The team solved the first problem with hydroxide-exchange membrane fuel cells, which have been studied in the laboratory of a famous engineering professor Yan Yushan (transliteration) at the University of Utah for more than ten years. Funded by the US Department of Energy's Advanced Research Institution-Energy (ARPA-E) fuel project of $ 2.5 million, the UD team designed a fuel cell membrane that can work at higher temperatures to accelerate ammonia oxidation. They also found a catalyst that was not poisoned by ammonia. "Through these improvements, we have demonstrated a new ammonia fuel cell prototype with a peak power density of 135 mW / cm2, and the performance gap is significantly reduced compared to hydrogen," said the research lead author Zhao Yun (transliteration). He said that he has been devoted to the research of ammonia fuel cell since 2016. (Originally from: Daily Science China New Energy Network Synthesis) Kn95 Mask, Kn95 Fold Mask, N95 Respirator Mask, Kn95 Respirator GUANGZHOU HTD INTERNATIONAL , https://www.maskhtd.com