Journal
ADVANCED ENERGY MATERIALS
Volume 8, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201701601
Keywords
electrocatalysts; hydrogen evolution; molybdenum carbides; molybdenum phosphides; polyoxometalates
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Funding
- National Natural Science Foundation of China (NSFC) [21225103, 21471087, 21221062]
- State Key Laboratory of Natural and Biomimetic Drugs
- Specialized Research Fund for the Doctoral Program of Higher Education of China
- Tsinghua University Initiative Foundation Research Program [20131089204]
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The efficient evolution of hydrogen through electrocatalysis is considered a promising approach to the production of clean hydrogen fuel. Platinum (Pt)-based materials are regarded as the most active hydrogen evolution reaction (HER) catalysts. However, the low abundance and high cost of Pt hinders the large-scale application of these catalysts. Active, inexpensive, and earth-abundant electrocatalysts to replace Pt-based materials would be highly beneficial to the production of cost-effective hydrogen energy. Herein, a novel organoimido-derivatized heteropolyoxometalate, Mo4-CNP, is designed as a precursor for electrocatalysts of the HER. It is demonstrated that the carbon, nitrogen, and phosphorus sources derived from the Mo4-CNP molecules lead to in situ confined carburization, phosphorization, and chemical doping on an atomic scale, thus forming nitrogen-doped porous molybdenum carbide and phosphide hybrids, which exhibit remarkable electrocatalytic activity for the HER. Such an organically functionalized polyoxometalate-assisted strategy described here provides a new perspective for the development of highly active non-noble metal electrocatalysts for hydrogen evolution.
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