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.
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