다층 소결메쉬 확산체를 이용한 알칼라인 수전해 셀
- Title
- 다층 소결메쉬 확산체를 이용한 알칼라인 수전해 셀
- Other Titles
- Multi-Layered Sintered Porous Transport Layers in Alkaline Water Electrolysis
- Author
- 엄석기
- Keywords
- 알칼라인 수전해; 확산체; 물질 전달과 전압; 성능 평가; 전기화학적 임피던스 분광법; Alkaline water electrolysis; Porous transport layers; Mass transport overpotential; Porarization curve; Electrochemical impedance spectroscopy
- Issue Date
- 2021-12
- Publisher
- 한국수소및신에너지학회
- Citation
- 한국수소및신에너지학회논문집, v. 32, NO. 6, Page. 442-454
- Abstract
- The porous transport layer (PTL) is essential to effectively remove oxygen and hydrogen gas from the electrode surface at high current density operation conditions. In this study, the effect of PTL with different characteristics such as pore size, pore gradient, interfacial coating was investigated by multi-layered sintered mesh. A water electrolysis single cell of active area of the 34.56 cm2 was constructed, and IV performance and impedance analysis were conducted in the range of 0 to 2.0 A/cm2. It was confirmed that the multi-layered sintered mesh PTL, which have an average pore size of 25 to 57 µm and a larger pore gradient, removed bubbles effectively and thus seemed to improve IV performance. Also, it was confirmed that the catalytic metals such as Ni, NiMo coating on the PTL reduced activation overpotential, but increased mass transport overpotential.
- URI
- http://journal.hydrogen.or.kr/_common/do.php?a=current&b=11&bidx=2804&aidx=31669https://repository.hanyang.ac.kr/handle/20.500.11754/177795
- ISSN
- 1738-7264;2288-7407
- DOI
- 10.7316/KHNES.2021.32.6.442
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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