Achieving active and sustainable electrocatalysts for the oxygen reduction reaction with low cost and high performance attracts great interest in the field of fuel cells. Here, we report a facile route to prepare hollow CeO₂/CePO₄@N,P co‐doped carbon by pyrolyzing CeO₂@polyaniline obtained in the presence of phytic acid. By virtue of the co‐doping of N and P elements as well as the existence of oxygen vacancies and the formation of a void, the product illustrated excellent catalytic activity towards the oxygen reduction reaction with onset and half‐wave potentials of 0.918 and 0.822 V, respectively, and a current density of 4.38 mA cm⁻² at 0.565 V vs. RHE. Furthermore, it presented high durability and strong methanol tolerance, revealing its great potential for applications in energy conversion.

中文翻译：

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氮和磷共掺杂碳壳制备空心CeO2 / CePO4的增强氧还原反应的催化活性

以低成本和高性能获得用于氧还原反应的活性和可持续的电催化剂引起了燃料电池领域的极大兴趣。在这里，我们报告了通过热解在植酸存在下获得的CeO ₂ @聚苯胺来制备空心CeO ₂ / CePO ₄ @ N，P共掺杂碳的简便方法。通过N和P元素的共掺杂以及氧空位的存在和空隙的形成，该产品说明了对氧还原反应的出色催化活性，其起始和半波电势分别为0.918和0.822 V分别具有4.38 mA cm ^-2的电流密度相对于RHE为0.565 V 此外，它具有很高的耐用性和很强的甲醇耐受性，显示了其在能量转换中的巨大潜力。