Crystalline-amorphous interfaces of NiO-CrO_(x)electrocatalysts for boosting the urea oxidation reaction
作者机构:Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China Haihe Laboratory of Sustainable Chemical TransformationsTianjin 300192China Tianjin Renai CollegeTianjin 301636China
出 版 物:《Nano Research》 (纳米研究(英文版))
年 卷 期:2023年第16卷第3期
页 面:3665-3671页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金:supported by the National Natural Science Foundation of China(Nos.52025013 and 22121005) the 111 Project(No.B12015),Haihe Laboratory of Sustainable Chemical Transformations,and the Fundamental Research Funds for the Central Universities
主 题:NiO-CrO_(x) crystalline-amorphous interfaces electrochemical reconstruction urea oxidation reaction
摘 要:The overall energy efficiency of electrochemical systems is severely hindered by the traditional anodic oxygen evolution reaction(OER).Utilizing urea oxidation reaction(UOR)with lower thermodynamic potential to replace OER provides a promising strategy to enhance the energy *** and heterojunctions electrocatalysts have been aroused extensive studies owing to their unique physicochemical properties and outperformed ***,we report a simple method to construct a novel crystalline-amorphous NiO-CrO_(x)heterojunction grown on Ni foam for UOR *** NiO-CrO_(x)electrocatalyst displays excellent UOR performance with an ultralow working potential of 1.32 V at 10 mA·cm^(−2)and ultra-long stability about 5 days even at 100 mA·cm^(−2).In-situ Raman analysis and temperature-programmed desorption(TPD)measurement verify that the presence of the amorphous CrO_(x)phase can boost the reconstruction from NiO to active NiOOH species and enhance adsorption ability of urea ***,the unique crystalline-amorphous interfaces are also benefit to improving the UOR performance.