不同结构及氮掺杂NiO/rGO氧还原催化剂的制备与性能研究（英文）  

Influences of Morphology and Nitrogen Doping on the Electrocatalytic Characteristics for Oxygen Reduction Reaction of NiO/rGO

作　　者：梁栋 房恒义 姚硕 于洁玫[1] 张昭良[1] 姜占坤[1] 高学平[2] 黄太仲[1] LIANG Dong;FANG Heng-yi;YAO Shuo;YU Jie-mei;ZHANG Zhao-liang;JIANG Zhan-kun;GAO Xue-ping;HUANG Tai-zhong(Shandong Provincial Key Laboratory of Fluorine Chemistry Material,School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China;School of Materials Science and Engineering,Shandong University,Jinan 250061,China)

机构地区：[1]济南大学化学化工学院,山东省氟化学化工重点实验室,山东济南250022 [2]山东大学材料科学与工程学院,山东济南250022

出　　处：《电化学》2019年第5期589-600,共12页Journal of Electrochemistry

基　　金：Financial support for this work was provided by the Shandong Natural Science Foundation(No.ZR2018MB036 and ZR2017QB009);Science Development Project of Shandong Provincial(2017GGX40115 and 2016GGX102038);Project of Shandong Province Higher Educational Science and Technology Program(J17KA094,J13LD08);Scientific research fund of University of Jinan(XBS1644)

摘　　要：本文以还原氧化石墨烯(rGO)为载体制备了片状NiO/rGO和球形NiO/N-rGO结构的氧还原催化剂.通过X-射线衍射(XRD)、Raman(拉曼)测试、X-射线光电子能谱(XPS)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)等方法表征了两种催化剂的结构和形貌.采用循环伏安法(CV)、Tafel曲线、线性扫描伏安法(LSV)、旋转圆盘电极(RDE)和旋转环盘电极(RRDE)等技术测试研究了两种催化剂的电化学催化氧还原性能.研究结果表明,球形NiO/N-rGO催化剂催化氧还原的峰电流密度和起始电位(0.89 V vs.RHE)与商业化的Pt/C(20%)催化剂相近.旋转圆盘电极(RDE)和旋转环盘电极(RRDE)测试证明,在碱性电解液中NiO/rGO和NiO/N-rGO催化的氧还原反应均主要通过4-电子途径反应途径发生,球形NiO/N-rGO催化剂展现出替代Pt/C基催化剂的潜力.In this research,the reduced graphene oxide(rGO)supported sheet-like NiO(NiO/rGO)and spherical-like NiO(NiO/N-rGO)catalysts for oxygen reduction reaction(ORR)were prepared.The structures,morphologies and chemical states of the two catalysts were characterized by X-ray diffraction(XRD),Raman spectroscopy,X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM)and transmission electron microscopy(TEM).The electrochemical catalytic performance of the two catalysts for ORR were investigated by cyclic voltammetry(CV),Tafel,linear sweeping voltammetry(LSV),rotating disc electrode(RDE)and rotating ring disc electrode(RRDE)tests.Electrochemical results showed that the current density and onset potential(about 0.89 V)of nitrogen doped rGO(N-rGO)supported spherical-like NiO were close to those of commercial Pt/C(20%)catalysts.RDE and RRDE data proved that the ORR happened mainly through 4-electron route in an alkaline electrolyte with both catalysts.The spherical-like NiO/N-rGO catalyst showed great promise as alternative for Pt-based catalyst.

关 键 词：NIO 氮掺杂 形态结构差异 催化剂 氧还原反应 

分 类 号：O646[理学—物理化学]