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  • Summary & Details

Effect of catalyst layer and Electrolyte Membrane on High Temperature and Low Humidity Operation of PEFC

PEFC高温低加湿運転における触媒層および電解質膜への影響

Detailed Information

Author(J)1) 川下 紗奈, 2) 金坂 浩行, 3) 日下部 弘樹, 4) 李 春艶
Author(E)1) Sana Kawashita, 2) Hiroyuki Kanesaka, 3) Hiroki Kusakabe, 4) Chunyan Li
Affiliation(J)1) FC-Cubic, 2) FC-Cubic, 3) FC-Cubic, 4) FC-Cubic
Affiliation(E)1) FC-Cubic, 2) FC-Cubic, 3) FC-Cubic, 4) FC-Cubic
Abstract(J)PEFCの適用として大型商用車(HDV)向けの検討が進められているが,HDV向けPEFCでは従来の乗用車向けと比較し長時間の高温運転環境が想定されている.これまで,高温運転における膜劣化によるクロスリーク増大および電極触媒の劣化によるECSA低下について報告した.今回120℃/40%RHの高温低加湿条件で連続運転を実施し,その際の特性変化を測定,さらに劣化前後の触媒層および電解質膜の分析を行った.それら結果から,高温運転における性能劣化の要因について検討したので報告する.

Translation

Abstract(E)High-temperature, low-humidity operation was conducted at 120°C and 40% RH to investigate the effects on the catalyst layer and electrolyte membrane. It was found that in high-temperature environments, the softening of the electrolyte membrane can easily degrade its mechanical properties, potentially causing rapid membrane deterioration. Furthermore, continuous high-temperature operation was suggested to accelerate catalyst layer degradation, potentially leading to voltage drop.

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