A Scanning Flow Cell System for Fully Automated Screening of Electrocatalyst Materials
A Scanning Flow Cell System for Fully Automated Screening of Electrocatalyst Materials
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DOI：
10.1149/2.009211jes
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发表时间：
2012-01-01
影响因子：
3.9
通讯作者：
Mayrhofer, Karl J. J.
中科院分区：
文献类型：
--
作者：
Schuppert, Anna K.;Topalov, Angel A.;Mayrhofer, Karl J. J.
电催化剂在可持续能源相关领域发挥着重要作用。由于这些催化剂仍然需要改进活性和稳定性，因此在开发新材料方面投入了大量努力。由于材料组成和实验条件所跨越的巨大参数空间，对材料性能的高通量筛选有很大的需求。为了解决这个问题，扫描流动池（SFC）已经开发出来，并首次用于催化剂研究。自制的LabVIEW程序与SFC设置相适应，可实现全自动、计算机控制的高通量测量。引入气体吹扫系统以在与典型的旋转盘电极（RDE）系统相当的时间范围内用气体使电解质饱和。为了证明该装置的能力，多晶铂上的氧还原反应作为一个样品系统进行了研究。的循环伏安图是一致的，从传统的电化学电池的调查预期。重复测量显示出高再现性。考虑到该系统的改进和扩展的潜力，SFC将是一个有价值的筛选工具的电催化剂的研究。(C)2012年电化学学会。[DOI：10.1149/2.009211jes]版权所有。
Electrocatalysts play an important role in sustainable energy-related fields. As these catalysts still require improvement on activity and stability, a lot of effort is invested in developing new materials. Due to the enormous parameter space spanned by material composition and experimental conditions, there is a great demand for high-throughput screening of the material performance. To address this issue, a scanning flow cell (SFC) has been developed and is utilized for catalyst research for the first time. The adaptation of a homemade LabVIEW program to the SFC setup enables fully automated, computer-controlled high-throughput measurements. A gas purging system is introduced to saturate the electrolyte with gases in a timeframe comparable to typical rotating disk electrode (RDE) systems. To demonstrate the capabilities of the setup, the oxygen reduction reaction on polycrystalline platinum is investigated as a sample system. The cyclic voltammograms are consistent with those expected from investigations in conventional electrochemical cells. Repetitive measurements show high reproducibility. Considering the potential of the system toward improvements and extensions, the SFC will be a valuable screening tool for electrocatalyst research. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.009211jes] All rights reserved.