Simply constructed highly dispersed cobalt nanoparticles in diverse N-doped graphitic carbon with remarkable performances for water electrolysis

被引：16

作者：

Ji, Xiaochao ^{[1
]}

Bo, Lili ^{[2
]}

Zhang, Yuning ^{[1
]}

Shi, Wenping ^{[1
]}

Guan, Xiaolin ^{[1
]}

Xia, Liucheng ^{[1
]}

Shen, Yuxing ^{[1
]}

Wang, Yunxia ^{[3
]}

Tong, Jinhui ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecofunct Polymer Mat, Key Lab Ecoenvironm Polymer Mat Gansu Prov,Minist, Lanzhou 730070, Gansu, Peoples R China

[2] Gansu Agr Univ, Coll Sci, Lanzhou 730070, Gansu, Peoples R China

[3] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730070, Gansu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 61期

基金：

中国国家自然科学基金;

关键词：

Phenylenediamine Schiff base; Metal cobalt; Carbon based materials; Nitrogen doped; Overall water splitting; OXYGEN REDUCTION; ELECTROCATALYSTS; HYBRID;

D O I：

10.1016/j.ijhydene.2022.06.144

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：

Metal/carbon composite materials are highly promising electrocatalysts for water electrolysis. In this work, three composites of metal cobalt nanoparticles highly dispersed in N-doped carbon materials were facilely constructed by pyrolysis of different phenylenediamine based Schiff base-Co complexes (PDBs). Interestingly, the composites derived from PDBs based on different phenylenediamine exhibited different morphologies. The superior case is that rodlike composite catalyst was derived from o-phenylenediamine based PDBs. The obtained catalyst exhibited remarkable performances for both cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER), as well as overall water electrolysis. Only 172 and 289 mV of overpotentials and 1.57 V of cell voltage were exhibited at 10 mA cm(-2) for HER, OER and water splitting in 1.0 M KOH, respectively. The catalyst also displayed robust stability and high Faraday efficiency, and thus are potential high-performance catalyst for commercial water electrolysis. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：25511 / 25521

页数：11

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