A group of researchers have unraveled the mysteries behind a recently identified material -- zirconium nitride (ZrN) -- that helps power clean energy reactions. Their proposed framework will help future designs for transition metal nitrides, paving a path for generating cleaner energy.
on July 26, 2023, where it featured as the front cover article.
Recent studies have shown that ZrN exhibits efficient performances -- even outperforming platinum -- when used for the ORR in alkaline media. ZrN, whilst not an earth-abundant material, is still more cost-effective than alternatives. But what lay behind its impressive performance has remained a mystery to scientists.
Surface analysis revealed that ZrN has a very thin layer of HO when it is undergoing ORR. This thin layer helps molecules stick to it in a way that is beneficial for the ORR. Moreover, the electric field effect simulations demonstrate that atomic oxygen sticking to this thin-covered surface undergo minimal changes, thereby sticking moderately.
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