载Pt石墨烯中空微球催化剂的制备及其电催化性能

doi:10.16085/j.issn.1000-6613.2016.09.023

化工进展 ›› 2016, Vol. 35 ›› Issue (09): 2796-2801.DOI: 10.16085/j.issn.1000-6613.2016.09.023

载Pt石墨烯中空微球催化剂的制备及其电催化性能

周灵怡, 方立国

华南理工大学化学与化工学院, 广东广州 510640

收稿日期:2015-12-17 修回日期:2016-05-12 出版日期:2016-09-05 发布日期:2016-09-05
通讯作者: 周灵怡(1990-),女,硕士研究生,研究方向为石墨烯和脱硝催化剂。E-mail:812490788@qq.com。
作者简介:周灵怡(1990-),女,硕士研究生,研究方向为石墨烯和脱硝催化剂。E-mail:812490788@qq.com。

The preparation and electrochemical performance of Pt/graphene hollow spheres

ZHOU Lingyi, FANG Liguo

School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China

Received:2015-12-17 Revised:2016-05-12 Online:2016-09-05 Published:2016-09-05

摘要/Abstract

摘要： 目前，直接甲醇燃料电池（DMFC）已成为世界各国探寻新型绿色动力源的首选。铂基催化剂虽然被公认为催化甲醇氧化最有效的催化剂，但离其商业化应用仍然存在较大差距。提高铂的利用率和电催化性能被公认为是解决DMFC商业化的关键问题。基于以上考虑，本文采用一种不需要使用表面活性剂的模板辅助法成功合成出了石墨烯中空球，并利用电沉积法负载Pt纳米颗粒。该载Pt石墨烯中空微球具有非常高的比表面积（226.4m2/g）和相互连通的结构。电化学测试结果表明，该载Pt石墨烯中空球的电化学活性表面积高达43.27m2/(g，Pt)，峰值电流密度几乎是商业铂碳的两倍，且稳定性明显高于商业化铂碳。该载Pt石墨烯中空球对甲醇氧化展现出了极好的应用前景。

关键词: 电化学, 纳米材料, 催化剂

Abstract: Direct methanol fuel cell(DMFC) is considered to be a prioritized choice for green power. Platinum-based catalyst material is well recognized as an excellent catalyst for methanol oxidation,but is still a bit immature for the commercial application. And,improving the utilization rate and the electrochemical performance of Pt is the key solution. Thus,the ultrathin-shell graphene hollow spheres have been designed and synthesized by a simple template assisted method without surfactant, then electrodeposition is employed to coat Pt nanoparticles on them. It was found that the obtained Pt/graphene hollow spheres had a high surface area(226.4m²/g) and an interconnected structure. More important,the Pt/graphene hollow spheres exhibited outstanding electrochemical performance. It was found that ECSA of the Pt/graphene hollow spheres is 43.27m²/(g,Pt),and their peak current density was nearly twice as that of commercial Pt/C catalysts,and the stability was also better. So,the Pt/graphene hollow spheres should had a promising prospect towards methanol oxidation.

Key words: electrochemistry, nanomaterials, catalyst

中图分类号:

TQ152

周灵怡, 方立国. 载Pt石墨烯中空微球催化剂的制备及其电催化性能[J]. 化工进展, 2016, 35(09): 2796-2801.

ZHOU Lingyi, FANG Liguo. The preparation and electrochemical performance of Pt/graphene hollow spheres[J]. Chemical Industry and Engineering Progree, 2016, 35(09): 2796-2801.

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载Pt石墨烯中空微球催化剂的制备及其电催化性能

The preparation and electrochemical performance of Pt/graphene hollow spheres

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