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한국신·재생에너지학회> 신재생에너지> 대면적 분리판의 운전 환경 불균일성을 고려한 MEA 성능최적화 방법

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대면적 분리판의 운전 환경 불균일성을 고려한 MEA 성능최적화 방법

Optimization Method for MEA Performance Considering the Non-Uniformity of Operating Condition in a Large-area Bipolar Plate

김성민 ( Sungmin Kim ) , 손영준 ( Young-jun Sohn ) , 우승희 ( Seunghee Woo ) , 박석희 ( Seok-hee Park ) , 정남기 ( Namgee Jung ) , 임성대 ( Sung-dae Yim )
  • : 한국신·재생에너지학회
  • : 신재생에너지 17권2호
  • : 연속간행물
  • : 2021년 06월
  • : 50-58(9pages)
신재생에너지

DOI


목차

1. 서 론
2. 실 험
3. 결과 및 고찰
4. 결 론
감사의 글
References

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초록 보기

We proposed an MEA development methodology that accurately measures intrinsic MEA performance while considering the uneven reaction environments formed inside a large-area BP. To facilitate measurement of the inherent MEA performance, we miniaturized the active area of the MEA to 3 cm2, and prepared two MEAs with different ionomer contents of 0.65 and 0.80 (I/C). By simulating the operating conditions of a 100 cm2 BP at the inlet (I), center (C), and outlet (O), the oxygen concentration and relative humidity were determined to be 20.7, 13.8, 11.7%, and 50, 66.1, and 70.1% respectively. We measured the performance and electrochemical analysis of the prepared MEAs under the three simulated conditions. Based on the results of statistical analysis of the evaluated MEA performance data, I/C 0.65 MEA had a higher average performance and lower performance deviation than I/C 0.80 MEA. Hence, it can be concluded that an I/C 0.65 MEA is a more effective MEA for large-area BP. Based on the above research process, we confirmed the effectiveness of the proposed MEA development methodology.

UCI(KEPA)

간행물정보

  • : 공학분야  > 화학공학
  • : KCI등재
  • :
  • : 계간
  • : 1738-3935
  • : 2713-9999
  • : 학술지
  • : 연속간행물
  • : 2005-2021
  • : 527


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발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 4호 발행 연도 : 2021 페이지 : pp. 1-8 (8 pages)

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발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 4호 발행 연도 : 2021 페이지 : pp. 9-27 (19 pages)

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Floating solar power markets are rapidly growing worldwide. The main policy instrument utilized to expand renewable energy use in foreign countries with many floating solar power installations is Feed-in-Tariffs (FITs). Foreign countries apply FIT to projects that have a secured grid connection, and lately, there has been a change in the direction of introducing or expanding auction systems. Vietnam and Taiwan give higher FIT to floating solar installations than land solar ones, and China, Vietnam, and Taiwan have higher FITs for certain regions. Compared to foreign countries where large-scale floating solar power installations have been installed, Korea has utilized Renewable Energy Certificate (REC) weights for residents' participation are provided additionally under the Renewable Portfolio Standard (RPS). In contrast to Korea, where residents' participation and benefit profit sharing are emphasized, the Netherlands provides opportunities for local residents to participate in floating solar power projects through cooperatives to improve the residents' acceptance.

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3전주ㆍ완주 수소시범도시 주민수용성 분석

저자 : 이지훈 ( Jihoon Lee )

발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 4호 발행 연도 : 2021 페이지 : pp. 28-35 (8 pages)

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It is very important to secure hydrogen acceptability to achieve the hydrogen economy. This study empirically analyzed the factors affecting acceptance by using the results of a questionnaire administered to residents of Jeonju-Wanju Hydrogen Demonstration City. The results indicated that the safety of hydrogen infrastructure and local industry and economic growth positively affected acceptance. In particular, local industry and economic growth were more effective in improving resident acceptance. As policy factors, support for government policies and disclosure of information on projects were also positive factors. As perceptual factors, the higher interest in hydrogen and less safety concerns positively affected acceptability. Therefore, as far as hydrogen safety is concerned, it seems necessary to support local industry development to improve acceptability, disclose information related to industrial development, and introduce targeted experience programs.

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발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 4호 발행 연도 : 2021 페이지 : pp. 36-45 (10 pages)

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To remove the Cu secondary phase remaining on the surface of a CIGSSe absorber layer manufactured by the two-step process, KCN etching was applied before depositing the CdS buffer layer. In addition, it was possible to increase the conversion efficiency by air annealing after forming the CdS buffer layer. In this study, various pre-treatment/post-treatment conditions wereapplied to the S-containing CIGSSe absorber layerbefore and after formation of the CdS buffer layer to experimentally confirm whether similareffects as those of Se-terminated CIGSe were exhibited. Contrary to expectations, it was noted that CdS air annealing had negative effects.

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발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 2호 발행 연도 : 2021 페이지 : pp. 9-23 (15 pages)

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발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 2호 발행 연도 : 2021 페이지 : pp. 32-39 (8 pages)

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6대면적 분리판의 운전 환경 불균일성을 고려한 MEA 성능최적화 방법

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발행기관 : 한국신·재생에너지학회 간행물 : 신재생에너지 17권 2호 발행 연도 : 2021 페이지 : pp. 50-58 (9 pages)

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초록보기

We proposed an MEA development methodology that accurately measures intrinsic MEA performance while considering the uneven reaction environments formed inside a large-area BP. To facilitate measurement of the inherent MEA performance, we miniaturized the active area of the MEA to 3 cm2, and prepared two MEAs with different ionomer contents of 0.65 and 0.80 (I/C). By simulating the operating conditions of a 100 cm2 BP at the inlet (I), center (C), and outlet (O), the oxygen concentration and relative humidity were determined to be 20.7, 13.8, 11.7%, and 50, 66.1, and 70.1% respectively. We measured the performance and electrochemical analysis of the prepared MEAs under the three simulated conditions. Based on the results of statistical analysis of the evaluated MEA performance data, I/C 0.65 MEA had a higher average performance and lower performance deviation than I/C 0.80 MEA. Hence, it can be concluded that an I/C 0.65 MEA is a more effective MEA for large-area BP. Based on the above research process, we confirmed the effectiveness of the proposed MEA development methodology.

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