Core-shell structure Co-Ni@Fe-Cu doped MOF-GR composites for water splitting

被引：17

作者：

Fu, Mingxuan ^{[1
]}

Ning, Guyang ^{[1
]}

Liu, Jiaxian ^{[1
]}

Zhang, Qi ^{[1
]}

Sun, Yuena ^{[1
]}

Fan, Xinyu ^{[1
]}

Wang, Haiyang ^{[1
]}

Lu, Haijun ^{[1
]}

Zhang, Yufan ^{[1
]}

Wang, Huan ^{[1
]}

机构：

[1] Hebei Univ, Coll Chem & Environm Sci, Key Lab Analyt Sci & Technol Hebei Prov, Minist Educ,Key Lab Med Chem & Mol Diag, Baoding 071002, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 29期

关键词：

Core-shell structure; Noble metal-free catalyst; M@Fe-Cu-GR NCs; Hydrogen evolution reaction; Oxygen evolution reaction; METAL-ORGANIC FRAMEWORK; OXYGEN EVOLUTION REACTION; EFFICIENT BIFUNCTIONAL ELECTROCATALYSTS; HYDROGEN EVOLUTION; GRAPHENE; COBALT; CATALYST; HYBRID; ARRAYS;

D O I：

10.1016/j.ijhydene.2021.02.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

What is essential to solving energy scarcity problems is that develop the high activity, durable and non-noble metal-based dual-functional electrocatalysts for hydrogen evolution reactions (HER) and oxygen evolution reactions (OER). In this work, a series of coreshell structure M@Fe-Cu-GR nanocubes (NCs) are prepared. In the prepared process, the bimetallic FeCu prussian blue analogues (PBA) is used as precursor, transition metals ions Co2+ and Ni2+ are introduced into the FeCu-PBA using the exchange of potassium ions with other metal ions, and then the FeCu-PBA are successfully loaded on the graphene oxide (GO) employed the attraction of opposite charges between polydiallyldimethylammonium chloride (PDDA) and GO. Electrochemical tests show that the Tafel slope of Co-Ni@Fe-Cu -GR NCs for HER and OER are 60 and 82 mV dec-1, respectively, and Co-Ni@Fe-Cu-GR NCs shows excellent performance in long-term stability test. ? 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：15124 / 15134

页数：11

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