CAJ | 학술논문

利用复合共沉积法，在涂有中间层SnO2-Sb2 O5的Ti基体上制备了PbO2+nano-WO3复合电极材料.采用X射线衍射( XRD)、X射线光电子能谱( XPS)、扫描电子显微镜( SEM)和双电层电容法等对复合电极表面的组成、结构、形貌及有效电化学面积进行测试.结果表明，随着纳米WO3掺杂量逐渐增大，复合电极的表面粗糙度和孔隙率逐渐变大，电化学有效面积也随之增大；利用线性扫描及Tafel曲线等电化学测试方法研究了nano-WO3的掺杂对复合电极析氧活性的影响，结果表明，掺杂nano-WO3的复合电极较纯PbO2电极的析氧活性大幅提高，其起始析氧电位发生负移，析氧过电位下降，最大可降低近300 mV.
이용복합공침적법，재도유중간층SnO2-Sb2 O5적Ti기체상제비료PbO2+nano-WO3복합전겁재료.채용X사선연사( XRD)、X사선광전자능보( XPS)、소묘전자현미경( SEM)화쌍전층전용법등대복합전겁표면적조성、결구、형모급유효전화학면적진행측시.결과표명，수착납미WO3참잡량축점증대，복합전겁적표면조조도화공극솔축점변대，전화학유효면적야수지증대；이용선성소묘급Tafel곡선등전화학측시방법연구료nano-WO3적참잡대복합전겁석양활성적영향，결과표명，참잡nano-WO3적복합전겁교순PbO2전겁적석양활성대폭제고，기기시석양전위발생부이，석양과전위하강，최대가강저근300 mV.
PbO2+nano-WO3 composite electrode materials were prepared by the composite electrodeposition method on Ti substrate with the intermediate SnO2-Sb2 O5 layer. The composition, structure and morphology of the composite electrode materials were investigated by X-ray diffraction( XRD) , X-ray photoelectron spectros-copy(XPS), scanning electron microscopy(SEM) analyses and double layer capacitance methode. The results indicate that porosity, roughness and electrochemically effective area of the composite electrode surface are in-creased because of the embedded nano-WO3 . Then, the composite electrodes were used as anodes for oxygen evolution reaction( OER) . The activities for the OER of the composites were explained by recording linear scanning voltammograms and Tafel plots. In contrast with the PbO2 electrode without nano-WO3 , oxygen evo-lution onset potentials of the composite electrodes become lower, the overpotentials for oxygen evolution of composite electrodes are decreased, and the OER activities are improved significantly. The overpotential for oxygen evolution at the composite electrode could be lowered by approximately 300 mV compared to that of PbO2 electrode without nano-WO3 .