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한국해군과학기술학회
[ Article ]
Journal of the KNST - Vol. 2, No. 2, pp.66-70
ISSN: 2635-4926 (Print)
Print publication date 30 Sep 2019
Received 07 Jun 2019 Revised 15 Jul 2019 Accepted 29 Jul 2019
DOI: https://doi.org/10.31818/JKNST.2019.09.2.2.66

잠수함(정)용 고분자 전해질막 연료전지의 이방성 가스확산층의 영향에 대한 연구

서정훈1 ; 김동규2, * ; 백현민3
1해군 작전사 문무대왕함
2중앙대학교 기계공학부 조교수
3해군 작전사 충북함
Effect of Anisotropic Gas Diffusion Layer Structure on the Cathode Dead-End Mode of Polymer Electrolyte Membrane Fuel Cells for the Submarine
Jeong Hoon Seo1 ; Dong Kyu Kim2, * ; Hyun Min Baek3
1ROK Navy Ship Munmu the Great
2Assistant Professor, School of Mechanical Engineering, Chung-Ang University
3ROK Navy Ship Chungbuk

Correspondence to: *Dong Kyu Kim E-mail: dkyukim@cau.ac.kr

© 2019 Korea Society for Naval Science & Technology

초록

잠수함 및 무인잠수정의 추진에너지로서 각광받고 있는 고분자 전해질막 연료전지의 출구폐쇄모드는 가스확산층(gas diffusion layer)에 수분이 쌓여 성능저하를 일으키게 됨에 따라 수분을 일시적으로 제거하는 퍼지(purge)과정을 수행하게 된다. 본 연구에서는 퍼지로 인한 연료손실이 감소된다는 점을 고려하여 가스확산층의 이방성에 따른 퍼지특성을 알아보았다. 연료전지 스택(stack) 체결시 0도 가스확산층과 90도 가스확산층을 사용하여 가스확산층 변형정도를 확인한 결과 90도 가스확산층의 변형이 0도 가스확산층에 비해 적게 나타났고, 그에 따라 퍼지주기 역시 길게 나타나 배출되는 연료를 최소화할 수 있음을 확인하였다. 이러한 결과는 향후 잠수함(정) 및 무인잠수정의 잠항시간 증가를 위한 개발에 참고가 될 것이다.

Abstract

Dead-end mode Polymer Electrolyte Membrane Fuel Cell(PMEFC), emerging as a power of submarine and Unmanned Underwater Vehicles according to anisotropy of Gas Diffusion Layers (GDL) was studied. Dead-end mode PEMFC must execute purge periodically because water accumulates in GDL after response of fuels. Because the deformation happens when fuel cell stack is assembled, the deformation can be differed by difference of physical strength. So, we make a comparison with 0 degree GDL and 90 degree GDL to identify the difference of deformation and purge characteristics. As a result, 90 degree GDL have lower deformation and longer purge period, which means there is longer underwater time of submarine and UUV. This result will be a reference to the development for propulsion capability of future naval submarine and UUV.

Keywords:

Anisotropy, Gas Diffusion Layer, Polymer Electrolyte Membrane Fuel Cell, Permeability, Mean Purge Interval

키워드:

이방성, 가스확산층, 고분자 전해질막 연료전지, 투과도, 평균 퍼지주기

References

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