Interfacial electronic engineering of Ru/FeRu nanoparticles as efficient trifunctional electrocatalyst for overall water splitting and Zn-air battery

被引：43

作者：

Feng, Weihang ^{[1
]}

Feng, Yongqiang ^{[1
]}

Chen, Junsheng ^{[1
]}

Wang, Hai ^{[1
]}

Hu, Yuzhu ^{[1
]}

Luo, Tianmi ^{[1
]}

Yuan, Chengke ^{[1
]}

Cao, Liyun ^{[1
]}

Feng, Liangliang ^{[1
]}

Huang, Jianfeng ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Shaanxi Key Lab Green Preparat & Functionalizat I, Sch Mat Sci & Engn, Xian 710021, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 437卷

基金：

中国国家自然科学基金;

关键词：

Trifunctional electrocatalyst; Ruthenium; Interface structure; Water splitting; Zn-air battery; POROUS CARBON;

D O I：

10.1016/j.cej.2022.135456

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Rational design of multi-functional electrocatalyst for hydrogen evolution reaction (HER), oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is critical to energy conversion and storage technologies such as water splitting and metal-air batteries. However, explorations of specific interface structures for catalysts are still limited and challenging. Herein, a novel core-shell architecture comprising of Ru and FeRu hybrid enwrapped with a carbon shell anchored on nitrogen-doped carbon substrate (Ru-FeRu@C/NC) was constructed. Specifically, the interfacial electronic interaction between Ru and FeRu regulate the electron configuration and broaden the electron transfer pathway to boost its electrocatalytic performance. Particularly, Ru-FeRu@C/NC required ultralow overpotentials of 23 and 345 mV to drive a current density of 10 mA cm-2 for HER and OER, respectively, and a positive half-wave potential of 0.90 V versus reversible hydrogen electrode (RHE) for ORR. Furthermore, an electrocatalytic water splitting cell powered by a Zn-air battery was successfully fabricated using Ru-FeRu@C/NC as the "one-in-all" electrocatalyst. The present work paves the way for design and construction of efficient multifunctional electrocatalyst in energy conversion and storage.

引用

页数：10

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