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首页> 外文期刊>Advanced energy materials >Nitrogen-Doped Porous Molybdenum Carbide and Phosphide Hybrids on a Carbon Matrix as Highly Effective Electrocatalysts for the Hydrogen Evolution Reaction
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Nitrogen-Doped Porous Molybdenum Carbide and Phosphide Hybrids on a Carbon Matrix as Highly Effective Electrocatalysts for the Hydrogen Evolution Reaction

机译：碳基上的氮掺杂多孔碳化钼和磷杂化物作为氢生成反应的高效电催化剂

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摘要

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.
机译：通过电催化有效地释放氢气被认为是生产清洁氢气燃料的有前途的方法。铂（Pt）基材料被认为是活性最高的析氢反应（HER）催化剂。然而，Pt的低丰度和高成本阻碍了这些催化剂的大规模应用。活性，廉价且富含地球的电催化剂来代替基于Pt的材料将对生产具有成本效益的氢能非常有利。本文中，将新型的有机亚氨基衍生的杂多金属氧酸盐Mo4-CNP设计为HER的电催化剂的前体。结果表明，源自Mo4-CNP分子的碳，氮和磷源导致原子范围内的原位受限渗碳，磷化和化学掺杂，从而形成氮掺杂的多孔碳化钼和磷化杂化物，表现出对HER具有非凡的电催化活性。本文所述的这种有机官能化的多金属氧酸盐辅助策略为开发用于放氢的高活性非贵金属电催化剂提供了新的视角。

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  • 来源
    《Advanced energy materials》 |2018年第6期|1701601.1-1701601.9|共9页
  • 作者

    Huang Yichao; Ge Jingxuan; Hu Jun; Zhang Jiangwei; Hao Jian; Wei Yongge;

  • 作者单位

    Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China|Peking Univ, State Key Lab Nat & Biomimet Drugs, Beijing 100191, Peoples R China;

    Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China;

    Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China;

    Beijing Univ Chem Technol, Beijing 100029, Peoples R China;

    Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China|Peking Univ, State Key Lab Nat & Biomimet Drugs, Beijing 100191, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    electrocatalysts; hydrogen evolution; molybdenum carbides; molybdenum phosphides; polyoxometalates;

    机译：电催化剂;析氢;碳化钼;磷化钼;多金属氧酸盐;

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