Facile synthesis of Ni-, Co-, Cu-metal organic frameworks electrocatalyst boosting for hydrogen evolution reaction

Man Zhang ¹Di Hu ¹Zhenhao Xu ¹Biying Liu ¹Mebrouka Boubeche ²Zuo Chen ¹Yuchen Wang ¹Huixia Luo ²Kai Yan¹

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作者信息

1. Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
2. Key Lab of Polymer Composite & Functional Materials, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
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Abstract

The conductive metal-organic frameworks (MOFs) are suggested as the ideal electrocatalysts for hydrogen evolution reaction (HER) because of the high utilization of metal atoms.Rational design and facile synthesis of MOFs with large specific surface area,proper metals as center,and tunable chemical components is still full of challenges.Herein,we report the facile synthesis three types of porous MOFs by regulating metal center using benzene-1,3,5-tricarboxylic acid (H3BTC) as organic ligand and have successfully synthesized the rhombic octahedral Cu-BTC,rod-shaped Co-BTC and spherical Ni-BTC materials with large specific surface area ranged in 350-500 m2 g-1.These as-prepared MOFs materials exhibit high performance of HER in 0.5 M H2SO4.Ni-BTC material exhibits the lowest overpotential of 53 mV at 10 mA cm-2 and the smallest Tafel slope of 62 mV dec-1 than those of Cu-BTC (270 mV,155 mV dec-1) and Co-BTC (123 mV,100 mV dec-1),which are much superior to these previously reported MOFs catalysts.In addition,the fast catalytic kinetic of Ni-BTC was confirmed by the smaller charge transfer resistance (Rct)value of 0.9 Ω and larger electrochemical active surface area (ECSA) of 35.5 cm2 than those of Cu-BTC (8.2 Ω,22.5 cm2) and Co-BTC (1.9 Ω,27.7 cm2).Because of the structural advantage and large ECSA,the turnover frequency (TOF) value of Ni-BTC reaches up to 0.041 s-1 at 120 mV overpotential,which is 20.5 and 2.6 times greater than that of Cu-BTC (0.002 s-1) and Co-BTC (0.016 s-1).Besides,these three types of MOFs exhibited excellent durability over 12 h.This study unfolds diverse insights into the design and facile synthesis of MOFs for electrochemical energy conversion system.

Key words

Metal-organic frameworks/Hydrogen evolution reaction/Activity/Overpotential/Durability

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基金项目

This work was supported by the National Natural Science Foundation of China(11922415)

This work was supported by the National Natural Science Foundation of China(22078374)

This work was supported by the National Natural Science Foundation of China(21776324)

This work was supported by the National Natural Science Foundation of China(21701197)

Key-Area Research and Development Program of Guangdong Province(2019B110209003)

Guangdong Basic and Applied Basic Research Foundation(2019A1515011718)

Guangdong Basic and Applied Basic Research Foundation(2019B1515120058)

Guangdong Basic and Applied Basic Research Foundation(2020A1515011149)

National Natural Science Foundation of China(11922415)

National Natural Science Foundation of China(21776324)

National Natural Science Foundation of China(21701197)

National Key R&D Program of China(2018YFD0800700)

National Ten Thousand Talent Plan()

Pearl River Scholarship Program of Guangdong Province Universities and Colleges(20191001)

Fundamental Research Funds for the Central Universities(19lgzd25)

Fundamental Research Funds for the Central Universities(19lgzd03)

Hundred Talent Plan from Sun Yat-sen University()

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量35

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