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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：盘锦校区食品与环境学院副院长 Vice Dean School of Food and Environment Panjin Campus Dalian University of Technology
性别：女
毕业院校：大连理工大学
学位：博士
所在单位：化工海洋与生命学院
学科：环境工程. 环境科学
办公地点：环境学院 B 505
化工 海洋与生命学院 D05-201
联系方式：0427-2631799;
Effects of poly-1,5-diaminoanthraquinone morphology on oxygen reduction in acidic solution
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论文类型：期刊论文
发表时间：2009-03-01
发表刊物：ELECTROCHIMICA ACTA
收录刊物：SCIE
卷号：54
期号：8
页面范围：2224-2228
ISSN号：0013-4686
关键字：1,5-Diaminoanthraquinone; Oxygen reduction; Electron-transfer resistance; O(2)-transport; Electrocatalysis
摘要：The poly-1,5-diaminoanthraquinone (P15DAAQ) modified Pt electrodes show electrocatalytic activity for oxygen reduction reaction (ORR) with oxygen reduction peak at about 0.39V in 0.1 MH(2)SO(4). The P15DAAQ with different thickness has different morphology. The effects of morphologies on the electrocatalytic behaviors of P15DAAQ for oxygen reduction reaction are investigated using cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS) measurements. We propose two different O(2)-transport processes on electrodes modified with thin P15DAAQ and thick P15DAAQ. Together with the quantitative analysis with O(2)-transport dynamics, electron-transfer resistance, and catalytic reaction rate during ORR, thin P15DAAQ electrode performs better electrocatalysis for ORR, although thick P15DAAQ provides higher real surface area and more reactive sites which is beneficial for ORR within a short time. (C) 2008 Elsevier Ltd. All rights reserved.