铂纳米颗粒部分替代钌提高直接甲醇燃料电池的催化效率

The 9th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS) Pub Date : 2014-04-13 DOI:10.1109/NEMS.2014.6908804

Chuan Chang, Liangxu Lin, Yi-Shiuan Wu, F. Tseng

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引用次数: 0

摘要

本文采用开环还原系统(OLRS)[1]在碳纳米管/碳纤维支架(CNT/CF)上制备了用于直接甲醇燃料电池(DMFC)的核壳型Pt(铂)/Ru(钌)催化剂。通过调节电离还原环境的pH值，Pt4+可以首先转化为Pt2+，通过氧化还原转金属作用使部分Ru被Pt取代，生成Pt/Ru核壳纳米结构[2,3]。与传统的回流系统相比，我们开发的OLRS可大大提高所制备的核壳纳米催化剂的甲醇氧化效率和一氧化碳(CO)中毒耐受性[4]。

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Enhancement of catalytic efficiency by partial replacement of ruthenium with platinum nanoparticles for direct methanol fuel cell

In this paper, an open-loop reduction system (OLRS) [1] is employed to produce the core-shell Pt (platinum)/Ru (ruthenium) catalysts on the carbon nanotube/carbon fiber supports (CNT/CF) for direct methanol fuel cell (DMFC) application. By adjusting pH value of the ionized reduction environment, Pt4+ can be first converted into Pt2+ to allow partial Ru replacement with Pt by redox transmetalation and produce Pt/Ru core-shell nano structures [2,3]. Methanol oxidation efficiency and carbon monoxide (CO) poisoning tolerance of the prepared core-shell nano catalysts can be greatly enhanced by our developed OLRS compared to conventional reflux system [4].

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The 9th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)

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