Cobalt‐Molybdenum Bimetal Phosphides Encapsulated in Carbon as Efficient and Durable Electrocatalyst for Hydrogen Evolution,ChemistrySelect

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Cobalt‐Molybdenum Bimetal Phosphides Encapsulated in Carbon as Efficient and Durable Electrocatalyst for Hydrogen Evolution
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-12-01 , DOI: 10.1002/slct.202003509
Jiazi Shi ₁ , Cunxia Hou ₁ , Le Li ₁ , Wencai Xu ₁ , Yabo Fu ₁ , Yanzhi Huang ₁ , Ziyi Xiong ₁ , Weijia Cheng ₁

Affiliation

Hydrogen evolution reaction (HER) from water electrolysis is an attractive technique developed in recent years for clean renewable energy. It is critical to develop a low‐cost, high activity and long‐time stability HER catalyst. In this work, a novel catalyst, Cobalt‐Molybdenum bimetal phosphides encapsulated in carbon matrix (Co‐Mo‐P@C), is synthesized using MOFs‐templated strategy by chemical vapor deposition (CVD) and phosphidation. The Co‐Mo‐P@C catalyst exhibits excellent catalytic performances with low overpotentials of 148 and 159 mV to reach current densities of 10 mA cm⁻² for HER in both acidic and alkaline media, respectively, as well as long‐time durability over 20 h. This work introduces a new method for an efficient and stable HER catalyst and it may be extended to design other encapsulated bimetal nitrides, sulfides, and selenides for more applications.

中文翻译：

包封在碳中的钴钼双金属磷化物是高效且持久的氢析出电催化剂

水电解制氢反应（HER）是近年来开发的一种用于清洁可再生能源的有吸引力的技术。开发低成本，高活性和长期稳定性的HER催化剂至关重要。在这项工作中，使用MOF模板化策略通过化学气相沉积（CVD）和磷化合成了一种新型催化剂，即包裹在碳基质中的钴钼双金属磷化物（Co-Mo-P @ C）。Co-Mo-P @ C催化剂具有出色的催化性能，低过电势分别为148和159 mV，可达到10 mA cm ^-2的电流密度分别适用于酸性和碱性介质中的HER，以及20小时以上的长期耐久性。这项工作为高效，稳定的HER催化剂引入了一种新方法，可以扩展到设计其他封装的双金属氮化物，硫化物和硒化物以用于更多应用。

更新日期：2020-12-01

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