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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2011-02-01

发表刊物：ELECTROANALYSIS

收录刊物：SCIE

卷号：23

期号：2

页面范围：355-363

ISSN号：1040-0397

关键字：Anthraquinone; Doping; Electrochemistry; Oxygen reduction reaction; Polymers

摘要：To analyze the specific roles of anthraquinone-2-sulfonate (AQS) and polypyrrole (PPy) layer on oxygen reduction reaction (ORR), the electrocatalytic reduction of oxygen was investigated on the AQS/PPy composite modified graphite electrode. Results show that the enhanced electrocatalytic performance is attributed to the excellent electrocatalytic activity of the immobilized AQS functional groups to mediate two-electron reduction of O(2) to H(2)O(2). The PPy layer may not participate in ORR, but it can further catalyze the two-electron reduction of H(2)O(2) to produce H(2)O in the potential range more negative than that the two-electron reduction of oxygen proceeds efficiently on the AQS sites.