贵金属/半导体光电阳极在直接甲醇燃料电池中的应

doi:10.15541/jim20160651

摘要/Abstract

摘要：

直接甲醇燃料电池(DMFCs)由于具有能量效率高, 携带方便和环境友好等特点, 作为新型清洁能源受到越来越多的关注。阳极催化剂的优劣是影响DMFCs性能的关键因素之一。近年来研究显示, 利用具有光催化活性的半导体材料作为贵金属催化剂的载体, 在外界光源的照射下, 能够极大地改善电极的电催化活性和稳定性。本文对该类新型光响应贵金属/半导体电极在光照条件下对增强甲醇的电催化氧化性能方面进行了总结和概述。首先, 阐述了光照增强电极电催化甲醇氧化性能的基本反应机制; 然后, 对该类电极的制备方法以及催化活性等方面的研究进展进行了系统总结; 最后, 对该类电极在未来DMFCs中应用存在的问题和发展前景做了总结和展望。

关键词: 直接甲醇燃料电池, 半导体纳米材料, 电催化氧化, 光电阳极, 综述

Abstract:

Direct methanol fuel cells (DMFCs) have received great attentions as clean energy due to their higher energy efficiency, easy transportation and environmental friendly. The activity and stability of the anode catalysts are the key factors of DMFCs. Recent studies show that usage of semiconductor materials as a supporter of traditional noble metal electrocatalyst greatly improves the electrocatalytic activity and stability of the electrode in DMFCs under light irradiation. In this paper, the research progress of photoactivated noble metal/semiconductor electrocatalyst for DMFCs in recent years is summarized including: (i) the mechanism of improving electrocatalytic performance of the noble metal/semiconductor electrode in DMFCs under light irradiation; (ii) the fabrication methods of noble metal/semiconductor electrode; and (iii) catalytic performance of the noble metal/semiconductor electrode. And the prospects and problems of the photo-responsive electrodes for DMFCs reactions are addressed briefly.

Key words: direct methanol fuel cells, semiconductor nanomaterials, electrocatalytic oxidation, photoelectrochemical anode, review

中图分类号:

TQ152

翟春阳, 孙明娟, 杜玉扣, 朱明山. 贵金属/半导体光电阳极在直接甲醇燃料电池中的应[J]. 无机材料学报, 2017, 32(9): 897-903.

ZHAI Chun-Yang, SUN Ming-Juan, DU Yu-Kou, ZHU Ming-Shan. Noble Metal/Semiconductor Photoactivated Electrodes for Direct Methanol Fuel Cel[J]. Journal of Inorganic Materials, 2017, 32(9): 897-903.

图/表 3

图1 光照条件下Pt/CdS电极光电催化甲醇的过程示意图[30]

Fig. 1 Schematic illustration for photoelectrocatalytic methanol oxidation via Pt/CdS electrode under light illumination[30]

图2 Pt-TNTs和Pt-TNTs/RGO的制备和其SEM照片[27]

Fig. 2 Schematic diagram and SEM images of Pt-TNTs and Pt-TNTs/RGO[27]

图3 Pt/TiNT电极的自清洁曲线图[29]

Fig. 3 Voltammetric response of the fresh, poisoned and refresh Pt/TiNT samples in a 1 mol/L CH3OH+1 mol/L H2SO4 solution[29]

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