供水流量对URFC模式切换影响实验研究
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摘要
本文利用一个有效面积为25 cm2并具有可视化窗口的一体式再生燃料电池(Unitized Regenerative Fuel Cell,URFC),通过实验手段研究了其从燃料电池模式向电解池模式切换过程中,供水流量对电池电压及流道内气液两相流的影响.结果表明,燃料电池模式向电解池模式切换时供水流量的大小对切换后电解池模式的电压有一定影响。小流量供水时,水到达电池内部所需时间过长,电解池模式并不能够持续运行;随着供水流量的增大,水到达电池内部时间越来越快,切换后电解池模式电压的变化越来越小,在液态水进入电池氧电极侧后,电解池的电压趋于稳定。
In this work, a Unitized Regenerative Fuel Cell(URFC) with a 25 cm~2 active area and a transparent window is employed to investigate the influence of water flow rate on the voltage from the fuel cell mode to the water electrolysis mode and two-phase flow behaviors at oxygen flow channels.Results show that water flow rate has influence on the voltage of water electrolysis mode from the fuel cell mode to the water electrolysis mode. When the water flow rate is too low, the water electrolysis mode is not able to run continuously. While with the increase of water flow rate, the voltage variation of water electrolysis mode is smaller and after the water pumped to the oxygen flow channels, the voltage of water electrolysis mode is tended to stable.
In this work, a Unitized Regenerative Fuel Cell(URFC) with a 25 cm~2 active area and a transparent window is employed to investigate the influence of water flow rate on the voltage from the fuel cell mode to the water electrolysis mode and two-phase flow behaviors at oxygen flow channels.Results show that water flow rate has influence on the voltage of water electrolysis mode from the fuel cell mode to the water electrolysis mode. When the water flow rate is too low, the water electrolysis mode is not able to run continuously. While with the increase of water flow rate, the voltage variation of water electrolysis mode is smaller and after the water pumped to the oxygen flow channels, the voltage of water electrolysis mode is tended to stable.
引文
[1]宋世栋,张华民,马霄平,等.一体式可再生燃料电池[J].化学进展,2006, 18(10):1375 1380SONG Shidong, ZHANG Huamin, MA Xiaoping, et al.Unitized Regenerative FueL·Cells[J]. Progress in Chemistry, 2006, 18(10):1375-1380
[2]李斯琳.一体式可再生燃料电池膜电极研究和初步系统设计[D].上海交通大学·2011LI Silin. Investigation of Membrane Electrode Assembled(MEA)and Experimental System Design in Unitized Regenerative Fuel Cell[D]. Shang Hai Jiao Tong University.2011
[3]张新荣,张伟,王涛,等.百瓦级一体式再生燃料电池堆研究[J].电源技术,2011(7):795-798ZHANG Xinrong, ZHANG Wei, WANG Tao, et al. Research on Hectowatt Stack of Unitized Regenerative Fuel Cell[J]. Chinese Journal of Power Sources, 2011(7):795-798
[4] Lee W H, Kim H. Optimization of Electrode Structure to Suppress Electrochemical Carbon Corrosion of Gas Diffusion Layer for Unitized Regenerative Fuel Cell[J]. Journal of the Electrochemical Society, 2014, 161(6):F729-F733
[5] CHEN Guobao, ZHANG Huamin, ZHONG Hexiang, et al. Gas Diffusion Layer with Titanium Carbide for a Unitized Regenerative Fuel Cell[J]. Electrochi mica Acta,2010, 55(28):8801-8807
[6] Grigoriev S A, Millet P, Porembsky V I, et al. Development and Preliminary Testing of a Unitized Regenerative Fuel Cell Based on PEM Technology[J]. International Journal of Hydrogen Energy, 2011, 36(6):4164-4168
[7] SHAO Zhigang, YI Baolian, HAN Ming. Bi-functional Electrodes with a Thin Catalyst Layer for'Unitized'Proton Exchange Membrane Regenerative Fuel Cell[J]. Journal of Power Sources, 1999, 79(1):82-85
[8] Rivas S, Arriaga L G, Morales L, et al. Evaluation of PtRu-Ir as Bi-Functional Electrocatalysts for the Oxygen Electrode in a Unitized Regenerative Fuel Cell[J]. International Journal of Electrochemical Science, 2012, 7(4):3601-3609
[9] Ito H, Maeda T, Kato A, et al. Gas Purge for Switching from Electrolysis to Fuel Cell Operation in Polymer Electrolyte Unitized Reversible Fuel Cells[J]. Journal of the Electrochemical Society, 2010, 157(7):B1072-B1080
[10] WANG Lulu, GUO Hang, YE Fang, et al. TwoDimensional Simulation of Mass Transfer in Unitized Regenerative Fuel Cells under Operation Mode Switching[J].Energies, 2016, 9(1):No.47
[11] XIAO Hong, GUO Hang, YE Fang, et al. Numerical Study of the Dynamic Response of Heat and Mass Transfer to Operation Mode Switching of a Unitized Regenerative Fuel Cell[J]. Energies, 2016, 9(12):No.1015
[2]李斯琳.一体式可再生燃料电池膜电极研究和初步系统设计[D].上海交通大学·2011LI Silin. Investigation of Membrane Electrode Assembled(MEA)and Experimental System Design in Unitized Regenerative Fuel Cell[D]. Shang Hai Jiao Tong University.2011
[3]张新荣,张伟,王涛,等.百瓦级一体式再生燃料电池堆研究[J].电源技术,2011(7):795-798ZHANG Xinrong, ZHANG Wei, WANG Tao, et al. Research on Hectowatt Stack of Unitized Regenerative Fuel Cell[J]. Chinese Journal of Power Sources, 2011(7):795-798
[4] Lee W H, Kim H. Optimization of Electrode Structure to Suppress Electrochemical Carbon Corrosion of Gas Diffusion Layer for Unitized Regenerative Fuel Cell[J]. Journal of the Electrochemical Society, 2014, 161(6):F729-F733
[5] CHEN Guobao, ZHANG Huamin, ZHONG Hexiang, et al. Gas Diffusion Layer with Titanium Carbide for a Unitized Regenerative Fuel Cell[J]. Electrochi mica Acta,2010, 55(28):8801-8807
[6] Grigoriev S A, Millet P, Porembsky V I, et al. Development and Preliminary Testing of a Unitized Regenerative Fuel Cell Based on PEM Technology[J]. International Journal of Hydrogen Energy, 2011, 36(6):4164-4168
[7] SHAO Zhigang, YI Baolian, HAN Ming. Bi-functional Electrodes with a Thin Catalyst Layer for'Unitized'Proton Exchange Membrane Regenerative Fuel Cell[J]. Journal of Power Sources, 1999, 79(1):82-85
[8] Rivas S, Arriaga L G, Morales L, et al. Evaluation of PtRu-Ir as Bi-Functional Electrocatalysts for the Oxygen Electrode in a Unitized Regenerative Fuel Cell[J]. International Journal of Electrochemical Science, 2012, 7(4):3601-3609
[9] Ito H, Maeda T, Kato A, et al. Gas Purge for Switching from Electrolysis to Fuel Cell Operation in Polymer Electrolyte Unitized Reversible Fuel Cells[J]. Journal of the Electrochemical Society, 2010, 157(7):B1072-B1080
[10] WANG Lulu, GUO Hang, YE Fang, et al. TwoDimensional Simulation of Mass Transfer in Unitized Regenerative Fuel Cells under Operation Mode Switching[J].Energies, 2016, 9(1):No.47
[11] XIAO Hong, GUO Hang, YE Fang, et al. Numerical Study of the Dynamic Response of Heat and Mass Transfer to Operation Mode Switching of a Unitized Regenerative Fuel Cell[J]. Energies, 2016, 9(12):No.1015