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Strongly coupled dual zerovalent nonmetal doped nickel phosphide Nanoparticles/N, B-graphene hybrid for pH-Universal hydrogen evolution catalysis
Applied Catalysis B: Environment and Energy ( IF 22.1 ) Pub Date : 2020-06-26 , DOI: 10.1016/j.apcatb.2020.119284
Yiqiang Sun , Kun Xu , Zihan Zhao , Xiuling Li , Guozhu Chen , Cuncheng Li

The large-scale implementation of hydrogen by electrochemical water splitting demands highly active, durable and inexpensive platinum-free catalysts. Nevertheless, developing efficient non-noble metal based hydrogen evolution reaction (HER) electrocatalysts that can work in all pH solutions still remains as a huge uphill. Herein, we report dual zerovalent nonmetal (N and B) doped Ni2P nanoparticles hybridized with N, B-graphene (N, B-Ni2P/G) could function as electrocatalyst for hydrogen evolution in all pHs with high activity and stability. In-situ phosphidation of a 2D/2D heterojunction of Ni-Bi nanosheets/graphene (Ni-Bi NS/G) under ammonia atmosphere results in a strongly couple N, B-Ni2P/G hybrid electrocatalyst with (i) the enhanced intrinsic catalytic activity from dual zerovalent doped Ni2P structure, (ii) 0D architectures with a high surface area exposure yield, and (iii) the enhanced charge transport ability by N, B-graphene support. As a result, the designed N, B-Ni2P/G exhibits superior electrocatalytic HER performance and remarkable stability at all pH ranges. Our protocol may open up new ways to design progressive electrocatalysts for energy-related applications.



中文翻译:

强耦合双零价非金属掺杂磷化镍纳米粒子/ N,B-石墨烯杂化物,用于pH值通用的析氢催化

通过电化学水分解大规模实施氢需要高活性,耐用和廉价的无铂催化剂。然而,开发可在所有pH溶液中使用的高效的基于非贵金属的氢析出反应(HER)电催化剂仍然是一项艰巨的任务。在本文中,我们报道了与N,B-石墨烯(N,B-Ni 2 P / G)杂交的双零价非金属(N和B)掺杂的Ni 2 P纳米颗粒可以在所有pH值下作为氢析出的电催化剂,具有高活性和稳定性。 。原位的Ni-B的2D / 2D异质结phosphidation纳米片/石墨烯(镍-BNS / G)下的氨气氛结果在强耦合N,B-的Ni 2一种具有以下特性的P / G杂化电催化剂:(i)双重零价掺杂的Ni 2 P结构增强的固有催化活性;(ii)具有高表面积暴露率的0D结构;以及(iii)N,B-增强的电荷传输能力石墨烯支持。结果,设计的N,B-Ni 2 P / G在所有pH范围内均表现出优异的电催化HER性能和出色的稳定性。我们的协议可能会为设计与能源相关的应用中的渐进式电催化剂开辟新的途径。

更新日期:2020-07-02
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