Indicator Sensor Development and Fuel Cell Degradation Imaging

Author:

Woo Sahng Hyuck1,Lee Nak Jun2,Yook Seung Ho2,Kim Hee Soo3,Choi Jieun4,Kim Jae‐Hun1,Lee So Young2,Jang Jong Hyun2,Yoo Sung Jong2,Yoon Young‐Gi5,Han Jonghee6,Kim Hyoung‐Juhn6ORCID

Affiliation:

1. Gwangju Clean Energy Research Center Korea Institute of Energy Research (KIER) 270‐25 Samso‐ro Gwangju 61003 Republic of Korea

2. Center for Hydrogen and Fuel Cell Research Korea Institute of Science and Technology (KIST) Hwarang‐ro 14‐gil 5 Seoul 02792 Republic of Korea

3. Green Materials & Processes R&D Group Korea Institute of Industrial Technology Ulsan 44413 Republic of Korea

4. Hydrogen Industry Team, Green Growth Office Green Energy Institute 177 Samhyangcheon‐ro Mokpo‐si 58656 Republic of Korea

5. Fuel Cell Research and Demonstration Center Future Energy Research Division Korea Institute of Energy Research (KIER) Buan‐gun 56332 South Korea

6. Hydrogen Energy Technology Laboratory Korea Institute of Energy Technology (KENTECH) 200 Hyeoksin‐ro Naju‐si 58330 Republic of Korea

Abstract

AbstractAlthough extensive research has been conducted, understanding the exact phenomena occurring during the operation of polymer electrolyte fuel cells (PEFCs) remains difficult. This research attempted to identify new reasons for the reduced performance of PEFC using an imaging technique. To begin with, H+ and OH indicator sensors, which display red, blue, and green values (RGB) using digital microscopes, are developed and attached to each electrode of a membrane electrode assembly to enable quantitative analysis of ion generation. The proposed reaction in the fuel cell can be confirmed, and various reactions occurring in the electrode can be examined using this approach. In particular, H+ is generated at the anode and cathode of the anion exchange membrane fuel cell, which is found to be a major cause of performance deterioration.

Publisher

Wiley

Subject

Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials

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