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.
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页码：15124 / 15134
页数：11
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