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Zr‐Based Thin‐Film Metallic Glass for Bipolar Plate in Proton Exchange Membrane Fuel Cells
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-05-28 , DOI: 10.1002/adem.202000369 Hae Won Yoon 1 , Jun Young Choi 2 , Hyun Jun Park 1 , Ju Hyun Sun 3 , Seung Yong Shin 4 , Kyoung Il Moon 1
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-05-28 , DOI: 10.1002/adem.202000369 Hae Won Yoon 1 , Jun Young Choi 2 , Hyun Jun Park 1 , Ju Hyun Sun 3 , Seung Yong Shin 4 , Kyoung Il Moon 1
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Many researchers have tried to use metallic glass alloys in bipolar plates because of their unique properties such as their higher mechanical strength and corrosion resistances, recently. Thin‐film metallic glasses (TFMGs), herein, are coated on an austenitic stainless steel (AISI 316L) plate to enhance the corrosion properties of the metallic bipolar plate. A crystallized alloying target with the composition Zr63.9Al10Cu26.1 and a grain size of less than 1 μm is prepared by consolidating the amorphous powder at 800 °C for 30 min. Also, TFMGs are coated on the AISI 316L plate using direct current (DC) magnetron sputtering system. The contact resistance of the TFMG is decreased by 24 mΩ cm2 by controlling the surface roughness of the AISI 316L plate. The corrosion current densities of the TFMGs are less than 1 μA cm−2 under both anodic and cathodic conditions, and there are no changes of the current density in the range of potentials of 0.6–1.2 V which corresponds to the operating conditions of a proton exchange membrane (PEM) fuel cell. Based on this result, it is believed that these TFMGs can be a potential candidate coating materials for metallic bipolar plate in PEM fuel cell.
中文翻译：
质子交换膜燃料电池双极板用基于Zr的薄膜金属玻璃
最近，许多研究人员试图在双极板中使用金属玻璃合金，因为它们具有独特的性能，例如更高的机械强度和耐腐蚀性。本文将薄膜金属玻璃（TFMG）涂在奥氏体不锈钢（AISI 316L）板上，以增强金属双极板的腐蚀性能。通过将非晶态粉末在800°C下固结30分钟，制备出具有Zr 63.9 Al 10 Cu 26.1组成且晶粒尺寸小于1μm的结晶合金靶。同样，使用直流（DC）磁控溅射系统将TFMG涂覆在AISI 316L板上。TFMG的接触电阻降低了24mΩcm 2通过控制AISI 316L板的表面粗糙度。在阳极和阴极条件下，TFMGs的腐蚀电流密度均小于1μAcm -2，并且在0.6-1.2 V的电势范围内，对应于质子的工作条件，电流密度没有变化交换膜（PEM）燃料电池。基于该结果，认为这些TFMG可以是PEM燃料电池中的金属双极板的潜在候选涂层材料。
更新日期：2020-05-28
中文翻译：
质子交换膜燃料电池双极板用基于Zr的薄膜金属玻璃
最近，许多研究人员试图在双极板中使用金属玻璃合金，因为它们具有独特的性能，例如更高的机械强度和耐腐蚀性。本文将薄膜金属玻璃（TFMG）涂在奥氏体不锈钢（AISI 316L）板上，以增强金属双极板的腐蚀性能。通过将非晶态粉末在800°C下固结30分钟，制备出具有Zr 63.9 Al 10 Cu 26.1组成且晶粒尺寸小于1μm的结晶合金靶。同样，使用直流（DC）磁控溅射系统将TFMG涂覆在AISI 316L板上。TFMG的接触电阻降低了24mΩcm 2通过控制AISI 316L板的表面粗糙度。在阳极和阴极条件下，TFMGs的腐蚀电流密度均小于1μAcm -2，并且在0.6-1.2 V的电势范围内，对应于质子的工作条件，电流密度没有变化交换膜（PEM）燃料电池。基于该结果，认为这些TFMG可以是PEM燃料电池中的金属双极板的潜在候选涂层材料。
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