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김진철(Jincheol Kim),김성욱(Sung Uk Kim),김동민(Dong Min Kim),김태규(Taegyu Kim) 한국추진공학회 2012 한국추진공학회 학술대회논문집 Vol.2012 No.5
본 논문에서는 연료전지의 성능향상 및 신뢰성 확보를 위한 연료전지 최적화 및 탑재화 연구를 수행하였다. 고분자 전해질막 연료전지의 성능 향상을 위한 실험은 연료전지에 부하를 걸어 발생되는 전류와 전압을 측정하여, 상용 연료전지 데이터와 비교 분석하였다. 이를 바탕으로 무인항공기 연료전지 탑재상태에서의 최적화를 위한 제어기를 제작하고, 제어 알고리즘 구성을 통해 연료전지를 탑재한 무인항공기의 최적의 성능유지를 위한 연구를 수행하였다. The optimization and integration of a fuel cell were performed to improve the performance and reliability of the fuel cell in this paper. To improve the performance of the PEMFC, current and voltage of the fuel cell were measured using an electrical load, and the results was compared and analyzed with the data of a commercial fuel cell. Based on the above results, a controller for a fuel cell UAV applications was designed, and the fuel cell control algorithm was developed to optimize the performance of the fuel cell UAV.
고분자 전해질 막 연료전지의 내부가습을 위한 과전류 발생장치의 설계 및 성능평가
김진철(Jincheol Kim),김태규(Taegyu Kim),이창욱(Changwook Lee),김집(Jip Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
A humidification system using overcurrent generator for PEMFC was evaluated in this study. External humidification devices are enough to humidify the PEMFC but make the PEMFC system heavy and bulky. The performance of output power was measured according to the overcurrent conditions and internal humidification was calculated. Open-cathode type PEMFC was chosen and oxygen was fed from the incoming air through the cooling fan because of the operating characteristics. High-purity (≥99.999) non-humidified hydrogen with 1.6 bar was supplied to the PEMFC. The performance data were collected by DAQ device. As a result, PEMFC performance was increased about 12% by improvement of internal humidity. Therefore, the total weight and volume can be reduced using the overcurrent generator.
김진철(Jincheol Kim) 한국진공학회 2021 진공 이야기 Vol.8 No.2
In this work, it will studied about overcoming two challenges associated with large area perovskite solar cells. The first challenge of realizing a homogeneous and densely packed perovskite film over a large area is overcome by using an antisolvent spraying process. The second challenge of removing the series resistance limitation of transparent conductor is overcome by incorporating a metal grid designed using a semi-distributed diode model. A 16 cm2 perovskite solar device at the cell level rather than at the module level is demonstrated using the modified solution process in conjunction with the use of a metal grid. The cell is independently certified to be 12.1% efficient. This work paves the way toward highly efficient and large perovskite cells without single-junction perovskite cells and silicon-perovskite tandems.