Few Layered N, P Dual-Doped Carbon-Encapsulated Ultrafine MoP Nanocrystal/MoP Cluster Hybrids on Carbon Cloth: An Ultrahigh Active and Durable 3D Self-Supported Integrated Electrode for Hydrogen Evolution Reaction in a Wide pH Range
Few Layered N, P Dual-Doped Carbon-Encapsulated Ultrafine MoP Nanocrystal/MoP Cluster Hybrids on Carbon Cloth: An Ultrahigh Active and Durable 3D Self-Supported Integrated Electrode for Hydrogen Evolution Reaction in a Wide pH Range
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碳布上的多层N、P双掺杂碳封装超细MoP纳米晶体/MoP簇杂化物：一种超高活性和耐用的3D自支撑集成电极，用于宽pH范围内的析氢反应
DOI：
10.1002/adfm.201801527
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发表时间：
2018-07-25
影响因子：
19
通讯作者：
Zhang, Jun
中科院分区：
文献类型：
--
作者：
Liu, Baocang;Li, Huan;Zhang, Jun
开发高活性、高稳定性的电催化剂是实现水电解高效制氢的关键。在这里，一个3D自支撑集成电极的发展，构成几个分层的N，P双掺杂碳封装超细MoP-NC/MoP簇杂化碳布（FLNPC@MoP-NC/MoP-C/CC）的演示。受益于新颖的结构特征，包括完全开放和可接近的纳米孔隙、MoP-Cs上的超小尺寸MoP-NC以及N、P双掺杂碳层与MoP-NC的强协同效应，FLNPC@MoP-NC/MoP-C/CC作为一种三维自支撑无粘结剂集成电极，在所有pH值下均表现出极低的析氢反应过电位（分别在0.5 m H2SO 4、1.0 m PBS和1.0 m KOH电解质中，eta = 74、106和69 mV时，j = 10 mA cm（-2））。据我们所知，该催化剂的电催化性能代表了迄今为止报道的最好的基于MoP的HER电催化剂之一。此外，少量的N、P双掺杂碳层可以有效地防止MoP-NC/MoP-C的腐蚀，使FLNPC@MoP-NC/MoP-C/CC在酸性、中性和碱性介质中50 h的稳定性几乎不变，这显示出很好的电催化分解水的应用前景。
Development of highly active and stable electrocatalysts is a key to realize efficient hydrogen evolution through water electrolysis. Here, the development of a 3D self-supported integrated electrode constituting few layered N, P dual-doped carbon-encapsulated ultrafine MoP nanocrystal/MoP cluster hybrids on carbon cloth (FLNPC@MoP-NC/MoP-C/CC) is demonstrated. Benefiting from novel structural features including fully open and accessible nanoporosity, ultrasmall size of MoP-NCs on MoP-Cs as well as strong synergistic effects of N, P dual-doped carbon layers with MoP-NCs, the FLNPC@MoP-NC/MoP-C/CC as a 3D self-supported binder-free integrated electrode exhibits extraordinary catalytic activity for the hydrogen evolution reaction (HER) with extremely low overpotentials at all pH values (j = 10 mA cm(-2) at eta = 74, 106, and 69 mV in 0.5 m H2SO4, 1.0 m PBS, and 1.0 m KOH electrolytes, respectively). To the best of our knowledge, the ultrahigh electrocatalytic performance represents one of the best MoP-based HER electrocatalysts reported so far. Additionally, few layered N, P dual-doped carbon can effectively prevent MoP-NC/MoP-C from corrosion, making the FLNPC@MoP-NC/MoP-C/CC exhibit nearly unfading stability after 50 h testing in acidic, neutral, and alkaline media, which shows great promise for electrocatalytic water splitting application.