TY - GEN
T1 - Investigation of a Correlation Between IV Performance and Cathode Structure for MEAs Using Mesoporous Carbon Supports
AU - Yasufuku, Daichi
AU - Nagayama, Mayumi
AU - Sasaki, Kazunari
AU - Hayashi, Akari
N1 - Funding Information:
Financial support from New Energy and Industrial Technology Development Organization (NEDO) is gratefully acknowledged (Contract No. 20001214-0).
Publisher Copyright:
© 2022 ECS - The Electrochemical Society.
PY - 2022
Y1 - 2022
N2 - The cathode catalyst layer in PEFC plays an important role for further improvement of performance and durability toward heavy-duty vehicles. Since carbon is the main component to define the porous cathode structure, realization of optimal structure of carbon is desired. Therefore, in this study, using lab-made Pt/mesoporous carbon and Pt/mesoporous carbon fiber, and commercially available Pt/Ketjen Black as cathode materials, membrane electrode assemblies were made, and evaluated electrochemically and structurally. Then, a correlation between IV performance and three dimensional structure was investigated. From the three dimensionally reconstructed images, we found that large carbon particles most likely lead to higher ohmic resistance owing to interparticle resistance between the particles. Homogeneous distribution of large pores was found to lower concentration overvoltage.
AB - The cathode catalyst layer in PEFC plays an important role for further improvement of performance and durability toward heavy-duty vehicles. Since carbon is the main component to define the porous cathode structure, realization of optimal structure of carbon is desired. Therefore, in this study, using lab-made Pt/mesoporous carbon and Pt/mesoporous carbon fiber, and commercially available Pt/Ketjen Black as cathode materials, membrane electrode assemblies were made, and evaluated electrochemically and structurally. Then, a correlation between IV performance and three dimensional structure was investigated. From the three dimensionally reconstructed images, we found that large carbon particles most likely lead to higher ohmic resistance owing to interparticle resistance between the particles. Homogeneous distribution of large pores was found to lower concentration overvoltage.
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U2 - 10.1149/10909.0349ecst
DO - 10.1149/10909.0349ecst
M3 - Conference contribution
AN - SCOPUS:85140213700
T3 - ECS Transactions
SP - 349
EP - 357
BT - ECS Transactions
PB - Institute of Physics
T2 - 242nd ECS Meeting
Y2 - 9 October 2022 through 13 October 2022
ER -