Controllable synthesis of a self-assembled ultralow Ru,Ni-doped Fe_(2)O_(3) lily as a bifunctional electrocatalyst for large-current-density alkaline seawater electrolysis

作     者：Tong Cui Xuejun Zhai Lili Guo Jing-Qi Chi Yu Zhang Jiawei Zhu Xuemei Sun Lei Wang 崔彤;翟雪君;郭莉莉;迟京起;张昱;朱家伟;孙雪梅;王磊

作者机构：Key Laboratory of Eco-chemical EngineeringMinistry of EducationInternational Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina College of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2022年第43卷第8期

页      面：2202-2211页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：国家自然科学基金(51772162,52072197) 山东省杰出青年基金(ZR2019JQ14) 山东省自然科学基金(ZR2021QE165) 山东省高等学校青年创新技术基金(2019KJC004) 重大科技创新项目(2019JZZY020405) 山东省自然科学基金重大基础研究计划(ZR2020ZD09) 泰山学者青年英才计划(tsqn201909114) 

主　　题：RuNi-Fe_(2)O_(3)/IF Lily shape Bifunctional electrocatalyst Alkaline seawater splitting Large current density 

摘      要：Highly efficient and stable bifunctional electrocatalysts that can be used for large-current-density electrolysis of alkaline seawater are highly desirable for carbon-neutral economies,but their facile and controllable synthesis remains a ***,self-assembled ultralow Ru,Ni-doped Fe_(2)O_(3) with a lily shaped morphology was synthesized on iron foam(RuNi-Fe_(2)O_(3)/IF)via a facile one-step hydrothermal process,in which the intact lily shaped RuNi-Fe_(2)O_(3)/IF was obtained by adjusting the ratio of Ru/*** from the Ru/Ni chemical substitution,the as-synthesized RuNi-Fe_(2)O_(3)/IF can act as free-standing dual-function electrodes that are applied to electrocatalysis for the hydrogen evolution(HER)and oxygen evolution reactions(OER)in 1.0 mol L^(-1) KOH,requiring an overpotential of 75.0 mV to drive 100 mA cm^(-2) for HER and 329.0 mV for ***,the overall water splitting catalyzed by RuNi-Fe_(2)O_(3)/IF only demands ultralow cell voltages of 1.66 and 1.73 V to drive 100 mA cm^(-2) in 1.0 mol L^(-1) KOH and 1.0 mol L^(-1) KOH seawater electrolytes,*** electrodes show remarkable long-term durability,maintaining current densities exceeding 100 mA cm^(-2) for more than 100 h and thus outperforming the two-electrode system composed of noble *** work provides an efficient,economical method to synthesize self-standing bifunctional electrodes for large-current-density alkaline seawater electrolysis,which is of significant importance for ecological protection and energy exploitation.