Engineering Active Iron Sites on Nanoporous Bimetal Phosphide/Nitride Heterostructure Array Enabling Robust Overall Water Splitting

Xuan Zhou; Yuxue Mo; Fang YuLiling LiaoXinru YongFangming ZhangDongyang LiQian ZhouTian ShengHaiqing Zhou

首页> 外文期刊>Advanced functional materials >Engineering Active Iron Sites on Nanoporous Bimetal Phosphide/Nitride Heterostructure Array Enabling Robust Overall Water Splitting

【24h】

Engineering Active Iron Sites on Nanoporous Bimetal Phosphide/Nitride Heterostructure Array Enabling Robust Overall Water Splitting

机译：Engineering Active Iron Sites on Nanoporous Bimetal Phosphide/Nitride Heterostructure Array Enabling Robust Overall Water Splitting

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Alkaline water electrolysis is a commercially viable technology for green H2production using renewable electricity from intermittent solar or wind energy,but very few non-noble bifunctional catalysts simultaneously exhibit superbcatalytic efficiency and stability at large current densities for hydrogen andoxygen evolution reactions (HER and OER, respectively), especially for ironbasedcatalysts. Given that iron is the most abundant and least expensivetransition metal, iron-based compounds are very attractive low-cost targets asactive electrocatalysts for bifunctional water splitting with large-current durability.Herein, the in situ construction of a self-supported Fe_2P/Co_2N porousheterostructure arrays possessing superb bifunctional catalytic activity inbase is reported, featured by low overpotentials of 131 and 283 mV to attain acurrent density of 500 mA cm~(?2) for HER and OER, respectively, outperformingmost of non-noble bifunctional electrocatalysts reported hitherto. Particularly,this hybrid catalyst also displays an excellent overall water splitting activity,requiring low voltages of 1.561 and 1.663 V to attain 100 and 500 mA cm~(?2)with excellent durability in 1 m KOH, respectively. Most importantly, thecatalyst is stable for >120 h, even when the current density is 500 mA cm~(?2),which is prominently superior to IrO_2(+)//Pt(?) coupled noble electrodes, andis among the very best bifunctional catalysts reported thus far. Detailed theoreticalcalculations reveal that the interfacial interaction between Fe_2P andCo_2N can further improve the H~* binding energy at the iron sites.

著录项

来源
《Advanced functional materials》 |2023年第6期|2209465.1-2209465.9|共9页
作者
Xuan Zhou; Yuxue Mo; Fang YuLiling LiaoXinru YongFangming ZhangDongyang LiQian ZhouTian ShengHaiqing Zhou;
展开▼
作者单位

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan Province Department of Physics and Synergetic Innovation Center for Quantum Effects and Applic;

College of Physics and Electronic Engineering Hengyang Normal University Hengyang 421002, P. R. China;

College of Chemistry and Materials Science Anhui Normal University Wuhu 241000, P. R. China;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类
关键词
bifunctional water splitting; cobalt nitride; heterostructures; iron phosphide; large current density;

Engineering Active Iron Sites on Nanoporous Bimetal Phosphide/Nitride Heterostructure Array Enabling Robust Overall Water Splitting

摘要

著录项

相关主题

期刊订阅