Gas diffusion electrode setup for catalyst testing in concentrated phosphoric acid at elevated temperatures

TY - JOUR

T1 - Gas diffusion electrode setup for catalyst testing in concentrated phosphoric acid at elevated temperatures

AU - Wiberg, Gustav Karl Henrik

AU - Fleige, Michael

AU - Arenz, Matthias

PY - 2015/2/1

Y1 - 2015/2/1

N2 - We present a detailed description of the construction and testing of an electrochemical cell setup allowing the investigation of a gas diffusion electrode containing carbon supported high surface area catalysts. The setup is designed for measurements in concentrated phosphoric acid at elevated temperature, i.e., very close to the actual conditions in high temperature proton exchange membrane fuel cells (HT-PEMFCs). The cell consists of a stainless steel flow field and a PEEK plastic cell body comprising the electrochemical cell, which exhibits a three electrode configuration. The cell body and flow field are braced using a KF-25 vacuum flange clamp, which allows an easy assembly of the setup. As demonstrated, the setup can be used to investigate temperature dependent electrochemical processes on high surface area type electrocatalysts, but it also enables quick screening tests of HT-PEMFC catalysts under realistic conditions.

AB - We present a detailed description of the construction and testing of an electrochemical cell setup allowing the investigation of a gas diffusion electrode containing carbon supported high surface area catalysts. The setup is designed for measurements in concentrated phosphoric acid at elevated temperature, i.e., very close to the actual conditions in high temperature proton exchange membrane fuel cells (HT-PEMFCs). The cell consists of a stainless steel flow field and a PEEK plastic cell body comprising the electrochemical cell, which exhibits a three electrode configuration. The cell body and flow field are braced using a KF-25 vacuum flange clamp, which allows an easy assembly of the setup. As demonstrated, the setup can be used to investigate temperature dependent electrochemical processes on high surface area type electrocatalysts, but it also enables quick screening tests of HT-PEMFC catalysts under realistic conditions.

U2 - 10.1063/1.4908169

DO - 10.1063/1.4908169

M3 - Journal article

C2 - 25725862

SN - 0034-6748

VL - 86

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

M1 - 024102

ER -