Membrane-electrode junction properties for optimum potentiometric hydrogen sensor response

Author:

Jo Kyeong Joon1ORCID,Jung Soon-Won1ORCID,Jung Ji Eun1,Lee Ga-Eun1,Kim Seong-Cheol1,Lee Seung-Yun1ORCID

Affiliation:

1. Hanbat National University, Department of Materials Science and Engineering , Daejeon 34158, Republic of Korea

Abstract

Technology for monitoring the concentration of high-concentration hydrogen gas, which is used as a fuel for hydrogen fuel cell vehicles, is urgently needed to be developed to maximize vehicle fuel efficiency. To improve the detection performance of the proton conductor-based hydrogen sensor, a membrane electrode assembly (MEA) consisting of a Nafion membrane and a Pt-C composite electrode was manufactured and applied to the hydrogen sensor. The hot press method was used to manufacture the MEA, and the junction characteristics were optimized by changing pressure, temperature, and time. The MEA was manufactured at a pressure range of 2–5 MPa, a temperature range of 40–80 °C, and a time range of 60–120 s, and the sheet resistance of the MEA was measured to investigate its dependence on the bonding process conditions. When the electrode-Nafion junction temperature and pressure were high, the MEA was stuck to the substrate or paper sheet and could not be separated into a discrete MEA. Additionally, when the temperature was low, the junction strength was insufficient, causing the Nafion and electrode to separate from each other. Through this study, it was confirmed that a robust and conductive MEA was obtained under optimal bonding conditions of 2 MPa, 60 °C, and 60 s, and the sensitivity of the hydrogen sensor was significantly improved.

Funder

National Research Foundation of Korea

Korea Institute of Energy Technology Evaluation and Planning

Hanbat National Uiversity: 2024

Publisher

American Vacuum Society

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3