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Preparation of graded microporous layers for enhanced water management in fuel cells
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-06-30 , DOI: 10.1002/app.49564 Guangyi Lin 1 , Shouyi Liu 1 , Boquan Yu 1 , Hong Wang 1 , Kaiben Yu 2 , Yafei Hu 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-06-30 , DOI: 10.1002/app.49564 Guangyi Lin 1 , Shouyi Liu 1 , Boquan Yu 1 , Hong Wang 1 , Kaiben Yu 2 , Yafei Hu 1
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The newly prepared gas diffusion layer (GDL) was studied in this article. The new GDL mainly includes a carbon paper layer and two microporous layers (MPLs) on the same side of carbon paper. The two MPLs were fabricated by using conductive carbon blacks of two different carbon morphology, Vulcan XC‐72, and acetylene black carbon, respectively. From the results of the water contact angle and conductivity, it was found that the GDL prepared by spraying has not only good hydrophobicity but also low resistivity. Polarization curve and electrochemical impedance spectroscopy indicated that the spraying sequence of two different carbon black pastes seriously affects the fuel cell performance, and the mercury intrusion test proved that the change in the fuel cell performance is due to the change in the pore‐size distribution of the newly prepared GDL. By comparing with commercial GDL29BC, the GDL first sprayed with a layer of acetylene black carbon and then a layer of Vulcan XC‐72 has more pore size of 7–20 μm and 20–100 μm to improve the water and gas management capability of proton exchange membrane fuel cells. When the humidity is 60%, the maximum power density is increased by 25%, and when the humidity is 100%, it is increased by 12%.
中文翻译：
制备分级微孔层以增强燃料电池中的水管理
本文研究了新制备的气体扩散层（GDL）。新的GDL主要包括复写纸层和复写纸同一面上的两个微孔层（MPL）。两种MPL分别使用具有两种不同碳形态的导电炭黑Vulcan XC-72和乙炔黑炭制成。从水接触角和电导率的结果，发现通过喷雾制备的GDL不仅具有良好的疏水性而且具有低电阻率。极化曲线和电化学阻抗谱表明，两种不同炭黑浆料的喷涂顺序严重影响了燃料电池的性能，压汞试验证明，燃料电池性能的变化是由于碳纳米管孔径分布的变化所致。新准备的GDL。与商用GDL29BC相比，GDL首先喷涂一层乙炔黑碳，然后喷涂一层Vulcan XC‐72，其孔径更大，分别为7–20μm和20–100μm，以提高质子的水和气体管理能力交换膜燃料电池。当湿度为60％时，最大功率密度增加25％，而湿度为100％时，最大功率密度增加12％。
更新日期：2020-06-30
中文翻译：
制备分级微孔层以增强燃料电池中的水管理
本文研究了新制备的气体扩散层（GDL）。新的GDL主要包括复写纸层和复写纸同一面上的两个微孔层（MPL）。两种MPL分别使用具有两种不同碳形态的导电炭黑Vulcan XC-72和乙炔黑炭制成。从水接触角和电导率的结果，发现通过喷雾制备的GDL不仅具有良好的疏水性而且具有低电阻率。极化曲线和电化学阻抗谱表明，两种不同炭黑浆料的喷涂顺序严重影响了燃料电池的性能，压汞试验证明，燃料电池性能的变化是由于碳纳米管孔径分布的变化所致。新准备的GDL。与商用GDL29BC相比，GDL首先喷涂一层乙炔黑碳，然后喷涂一层Vulcan XC‐72，其孔径更大，分别为7–20μm和20–100μm，以提高质子的水和气体管理能力交换膜燃料电池。当湿度为60％时，最大功率密度增加25％，而湿度为100％时，最大功率密度增加12％。
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