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Regulation of the Ni2+ Content in a Hierarchical Urchin-Like MOF for High-Performance Electrocatalytic Oxygen Evolution.


ABSTRACT: The exploitation of efficient non-precious electrocatalysts for the oxygen evolution reaction is extremely important but remains tremendously challenging. Here, we prepared a series of hierarchical urchin-like bimetallic Ni/Zn metal-organic framework nanomaterials that served as high-performance electrocatalysts, by regulating the Ni2+/Zn2+ ratio and using a facile one-step hydrothermal method for the application of the oxygen evolution reaction. The structure of the hierarchical urchin-like microspheres could improve the utilization efficiency of the active species by facilitating the diffusion of gas and reducing the transport resistance of ions, due to its features of a large interfacial area and convenient diffusion channels. In addition, we found that the higher the Ni ratio was, the better the electrocatalytic performance of these bimetallic metal-organic framework nanomaterials.

SUBMITTER: Tang Y 

PROVIDER: S-EPMC6561350 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Regulation of the Ni<sup>2+</sup> Content in a Hierarchical Urchin-Like MOF for High-Performance Electrocatalytic Oxygen Evolution.

Tang Yijian Y   Zheng Shasha S   Xue Huaiguo H   Pang Huan H  

Frontiers in chemistry 20190605


The exploitation of efficient non-precious electrocatalysts for the oxygen evolution reaction is extremely important but remains tremendously challenging. Here, we prepared a series of hierarchical urchin-like bimetallic Ni/Zn metal-organic framework nanomaterials that served as high-performance electrocatalysts, by regulating the Ni<sup>2+</sup>/Zn<sup>2+</sup> ratio and using a facile one-step hydrothermal method for the application of the oxygen evolution reaction. The structure of the hierar  ...[more]

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