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用于高效析氢反应的双金属ZIF衍生的钴/氮共掺杂多孔碳负载钌催化剂

Bimetallic ZIF-Derived Co/N-Codoped Porous Carbon Supported Ruthenium Catalysts for Highly Efficient Hydrogen Evolution Reaction.

作者信息

Qi Hui, Guan Xinglong, Lei Guangyu, Zhao Mengyao, He Hongwei, Li Kai, Zhang Guoliang, Zhang Fengbao, Fan Xiaobin, Peng Wenchao, Li Yang

机构信息

Lab of Advanced Nano-Structure and Transfer Process, Department of Chemical Engineering, Tianjin University, Tianjin 300354, China.

出版信息

Nanomaterials (Basel). 2021 May 6;11(5):1228. doi: 10.3390/nano11051228.

DOI:10.3390/nano11051228
PMID:34066561
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8148513/
Abstract

Exploring the economical, powerful, and durable electrocatalysts for hydrogen evolution reaction (HER) is highly required for practical application. Herein, nanoclusters-decorated ruthenium, cobalt nanoparticles, and nitrogen codoped porous carbon (Ru-pCo@NC) are prepared with bimetallic zeolite imidazole frameworks (ZnCo-ZIF) as the precursor. Thus, the prepared Ru-pCo@NC catalyst with a low Ru loading of 3.13 wt% exhibits impressive HER catalytic behavior in 1 M KOH, with an overpotential of only 30 mV at the current density of 10 mA cm, Tafel slope as low as 32.1 mV dec, and superior stability for long-time running with a commercial 20 wt% Pt/C. The excellent electrocatalytic properties are primarily by virtue of the highly specific surface area and porosity of carbon support, uniformly dispersed Ru active species, and rapid reaction kinetics of the interaction between Ru and O.

摘要

实际应用迫切需要探索用于析氢反应（HER）的经济、高效且耐用的电催化剂。在此，以双金属沸石咪唑框架（ZnCo-ZIF）为前驱体制备了负载纳米团簇的钌、钴纳米颗粒和氮共掺杂多孔碳（Ru-pCo@NC）。因此，制备的Ru-pCo@NC催化剂Ru负载量低至3.13 wt%，在1 M KOH中表现出令人印象深刻的HER催化性能，在电流密度为10 mA cm时过电位仅为30 mV，塔菲尔斜率低至32.1 mV dec，并且与商业20 wt% Pt/C相比具有优异的长期运行稳定性。优异的电催化性能主要得益于碳载体的高比表面积和孔隙率、均匀分散的Ru活性物种以及Ru与O之间相互作用的快速反应动力学。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/c18b72d154f3/nanomaterials-11-01228-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/3db14c287107/nanomaterials-11-01228-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/50034b87cd77/nanomaterials-11-01228-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/9410deec132a/nanomaterials-11-01228-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/8c09dbc6b831/nanomaterials-11-01228-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/0903d4f85597/nanomaterials-11-01228-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/c18b72d154f3/nanomaterials-11-01228-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/3db14c287107/nanomaterials-11-01228-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/50034b87cd77/nanomaterials-11-01228-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/9410deec132a/nanomaterials-11-01228-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/8c09dbc6b831/nanomaterials-11-01228-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/0903d4f85597/nanomaterials-11-01228-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aba7/8148513/c18b72d154f3/nanomaterials-11-01228-g006.jpg

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