摘要(英) |
In the recent years, air pollution has exacerbated the greenhouse effect and extreme weather conditions, prompting countries to increasingly prioritize environmental issues. Hydrogen energy has emerged as a highly promising energy source. Among various hydrogen energy technologies, high-temperature proton exchange membrane fuel cell (HT-PEMFCs) combines the advantages of proton exchange membrane fuel cells and high-temperature operation, drawing considerable interest from researchers. This study focuses on the thermal management of HT-PEMFC stacks and investigates the impact of varying the cathode side stoichiometric ratio on the stack performance and thermal characteristic. Additionally, it utilizes temperature distribution measurements and a thermal resistance network model to predict the temperature distribution of components within the fuel cell stack that cannot be directly measured.
This study examines the temperature distribution and performance of high-temperature proton exchange membrane fuel cells under different ambient temperatures and stoichiometric ratios. Temperature distribution measurements are conducted at steady state by measuring the temperature at various positions and depths within the fuel cell with thermocouple. Performance testing involves polarization curve tests and individual cell voltage measurements. A thermal resistance network model, along with the measured temperature data, is used to predict the temperatures of fuel cell components that cannot be directly measured.
Experimental results show that this five-cell battery stack achieved a maximum power density of 991 mA/cm2 at an ambient temperature of 40°C, with an operating temperature of 160°C, a gas flow rate of 20 c.c/min/cell, an anode stoichiometry of 1.2, and a cathode stoichiometry of 2.0. At an ambient temperature of 25°C, the maximum power density was 931 mA/cm2. Without using a heating system and utilizing a constant current to bring the battery stack to a steady-state temperature, the temperature distribution results indicate that the highest temperature of the battery stack occurs at the third cell (center) position. The average temperature of the battery stack at an ambient temperature of 40°C is approximately 10°C higher than that at 25°C. The battery stack temperature decreases with an increase in the cathode stoichiometry, but the performance improves. Voltage measurements of each cell reveal that within an appropriate stoichiometry range, the voltage increase due to higher ambient temperatures is more beneficial than that achieved by increasing the stoichiometry. The temperature error between the measured points predicted by the thermal resistance network model and the actual measurements is less than 5%, indicating that the model′s predictions have a certain reference value. This thermal resistance model can further estimate the temperatures of objects within the battery stack that cannot be measured directly. |
參考文獻 |
[1]Online resources: 全球力爭2050零碳排各國怎麼做?https://www.fugomedia.com.tw/Home/Info/News/5347
[2]Online resources: https://www.storm.mg/lifestyle/4814037
[3]溫武義編譯,燃料電池技術,全華科技圖書股份有限公司,1-12頁
[4]衣寶廉,燃料電池,五南圖書出版股份有限公司,76頁
[5]Allen, Frances I., et al. "Morphology of hydrated as-cast Nafion revealed through cryo electron tomography." ACS Macro Letters 4.1 (2015): 1-5.
[6]Li, Qingfeng, et al. "Approaches and recent development of polymer electrolyte membranes for fuel cells operating above 100 C." Chemistry of materials 15.26 (2003): 4896-4915.
[7]Asensio, Juan Antonio, Salvador Borros, and Pedro Gomez-Romero. "Proton-conducting membranes based on poly (2, 5-benzimidazole)(ABPBI) and phosphoric acid prepared by direct acid casting." Journal of Membrane Science 241.1 (2004): 89-93.
[8]Gasteiger, Hubert A., et al. "Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs." Applied Catalysis B: Environmental 56.1-2 (2005): 9-35.
[9]Weber, Adam Z., and John Newman. "Coupled thermal and water management in polymer electrolyte fuel cells." Journal of The Electrochemical Society 153.12 (2006): A2205.
[10]Zhang, Lei, et al. "Progress in preparation of non-noble electrocatalysts for PEM fuel cell reactions." Journal of Power Sources 156.2 (2006): 171-182.
[11]Li, Qingfeng, et al. "The CO poisoning effect in PEMFCs operational at temperatures up to 200 C." Journal of the Electrochemical Society 150.12 (2003): A1599.
[12]Jung, Ho-Young, and Jung Won Kim. "Role of the glass transition temperature of Nafion 117 membrane in the preparation of the membrane electrode assembly in a direct methanol fuel cell (DMFC)." International Journal of Hydrogen Energy 37.17 (2012): 12580-12585.
[13]Yang, Chris, et al. "A comparison of physical properties and fuel cell performance of Nafion and zirconium phosphate/Nafion composite membranes." Journal of Membrane Science 237.1-2 (2004): 145-161.
[14]Hu, Jingwei, et al. "Performance degradation studies on PBI/H3PO4 high temperature PEMFC and one-dimensional numerical analysis." Electrochimica acta 52.2 (2006): 394-401.
[15]Oono, Yuka, et al. "Influence of operating temperature on cell performance and endurance of high temperature proton exchange membrane fuel cells." Journal of Power Sources 195.4 (2010): 1007-1014.
[16]Xia, Lingchao, et al. "Investigation of parameter effects on the performance of high-temperature PEM fuel cell." International Journal of Hydrogen Energy 43.52 (2018): 23441-23449.
[17]Wang, Lixia, et al. "Polylaminate TaN/Ta coating modified ferritic stainless steel bipolar plate for high temperature proton exchange membrane fuel cell." Journal of Power Sources 399 (2018): 343-349.Chen, Chen-Yu, and Sheng-Chun Su. "Development and performance evaluation of a high temperature proton exchange membrane fuel cell with stamped 304 stainless steel bipolar plates." International Journal of Hydrogen Energy 43.29 (2018): 13430-13439
[18]Yusof, M. S. M., et al. "Effect of Pt–Pd/C coupled catalyst loading and polybenzimidazole ionomer binder on oxygen reduction reaction in high-temperature PEMFC." International Journal of Hydrogen Energy 44.37 (2019): 20760-20769.
[19]Khalid, Saifuddin, et al. "Thermal–electrical–hydraulic properties of Al_2 O_3- SiO_2 hybrid nanofluids for advanced PEM fuel cell thermal management." Journal of Thermal Analysis and Calorimetry 143 (2021): 1555-1567.
[20]Khalid, Saifuddin, et al. "Thermal–electrical–hydraulic properties of Al_2 O_3- SiO_2 hybrid nanofluids for advanced PEM fuel cell thermal management." Journal of Thermal Analysis and Calorimetry 143 (2021): 1555-1567.
[21]Xia, Lingchao, et al. "Optimization of gas diffusion layer in high temperature PEMFC with the focuses on thickness and porosity." Applied Energy 300 (2021): 117357.
[22]Nanadegani, Fereshteh Salimi, Ebrahim Nemati Lay, and Bengt Sunden. "Effects of an MPL on water and thermal management in a PEMFC." International Journal of Energy Research 43.1 (2019): 274-296.
[23]Nishimura, Akira, et al. "Heat and mass transfer analysis in single cell of PEFC using different PEM and GDL at higher temperature." International Journal of Hydrogen Energy 44.56 (2019): 29631-29640.
[24]Yan, Wei-Mon, et al. "Performance improvement of air-breathing proton exchange membrane fuel cell stacks by thermal management." International Journal of Hydrogen Energy 45.42 (2020): 22324-22339.
[25]Zhao, Jing, Qifei Jian, and Zipeng Huang. "Experimental study on heat transfer performance of vapor chambers with potential applications in thermal management of proton exchange membrane fuel cells." Applied Thermal Engineering 180 (2020): 115847.
[26]Peng, Yimeng, et al. "Effects of flow field on thermal management in proton exchange membrane fuel cell stacks: A numerical study." International Journal of Energy Research 45.5 (2021): 7617-7630.
[27]黃鎮江,燃料電池(第三版),蒼海書局,69頁
[28]Online resources: Supplier Data - Polybenzimidazole (PBI) https://www.azom.com/article.aspx?ArticleID=1866
[29]Zhe Huang , Qifei Jian , Lizhong Luo , Bi Huang , Xingying Bai , Deqiang Li "Rapid thermal response and sensitivity analysis of proton exchange membrane fuel cell stack with ultra-thin vapor chambers, "Applied Thermal Engineering Volume 199, 117526, 2021
[30]Holman, Jack Philip. Heat transfer. McGraw Hill, 1986.
[31]Incropera, Frank P., et al. "Principles of heat and mass transfer." (No Title) (2013).
[32]千輝淳二,復漢出版社,實用傳熱計算。
[33]Muzychka, Y. S., and M. M. Yovanovich. "Laminar forced convection heat transfer in the combined entry region of non-circular ducts." J. Heat Transfer 126.1 (2004): 54-61.
[34]Sadeghifar, Hamidreza, Ned Djilali, and Majid Bahrami. "Thermal conductivity of a graphite bipolar plate (BPP) and its thermal contact resistance with fuel cell gas diffusion layers: Effect of compression, PTFE, micro porous layer (MPL), BPP out-of-flatness and cyclic load." Journal of Power Sources 273 (2015): 96-104 |