Benchmarking Pt-based electrocatalysts for low temperature fuel cell reactions with the rotating disk electrode: oxygen reduction and hydrogen oxidation in the presence of CO (review article)
Benchmarking Pt-based electrocatalysts for low temperature fuel cell reactions with the rotating disk electrode: oxygen reduction and hydrogen oxidation in the presence of CO (review article)
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DOI：
10.1016/j.electacta.2015.03.176
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发表时间：
2015-10-10
影响因子：
6.6
通讯作者：
Stephens, Ifan E. L.
中科院分区：
文献类型：
--
作者：
Pedersen, Christoffer M.;Escudero-Escribano, Maria;Stephens, Ifan E. L.
我们提出了最新的基准测试方法的聚合物交换膜燃料电池（PEMFC）的电催化剂，使用旋转盘电极（RDE）的方法。我们专注于在CO存在下的氧还原反应（ORR）和氢氧化反应（HOR）。我们选择了我们的实验方法，以提供易于进行测量和确保与PEMFC条件的可比性之间的最佳折衷。对于ORR，研究了温度、扫描速率、欧姆降校正和背景扣除对多晶Pt盘和两种不同的商业Pt/C催化剂的催化剂活性的影响。为了对HOR催化剂的CO耐受性进行基准测试，在多晶Pt和由Pt/C和PtRu/C组成的商业催化剂上使用循环伏安法和计时电流法。我们建议的最佳条件，以获得一个基准的ORR活性和CO耐受性的HOR催化剂。(C)2015爱思唯尔有限公司版权所有。
We present up-to-date benchmarking methods for testing electrocatalysts for polymer exchange membrane fuel cells (PEMFC), using the rotating disk electrode (RDE) method. We focus on the oxygen reduction reaction (ORR) and the hydrogen oxidation reaction (HOR) in the presence of CO. We have chosen our experimental methods to provide the most optimal compromise between the ease of carrying out the measurements and for ensuring comparability with PEMFC conditions. For the ORR, the effect of temperature, scan rate, Ohmic drop correction and background subtraction on the catalyst activity is investigated, both on a polycrystalline Pt disk and two different commercial Pt/C catalysts. To benchmark the CO tolerance of HOR catalysts, cyclic voltammetry and chronoamperometry are used, on polycrystalline Pt and commercial catalysts consisting of Pt/C and PtRu/C. We recommend the optimal conditions for obtaining a benchmark of ORR activity and CO tolerance of HOR catalysts. (C) 2015 Elsevier Ltd. All rights reserved.