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首页> 外文会议>Energy Technologies Symposium >Electrophoretically Deposited Copper Manganese Spinel Coatings for Prevention of Chromium Poisoning in Solid Oxide Fuel Cells
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Electrophoretically Deposited Copper Manganese Spinel Coatings for Prevention of Chromium Poisoning in Solid Oxide Fuel Cells

机译：用于预防固体氧化物燃料电池中的铬中毒电泳沉积的铜锰尖晶石涂层

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摘要

Cr_20_3 scales formed on ferritic steel interconnects in intermediate temperature solid oxide fuel cell (SOFC) stacks have the problem of Cr-poisoning that can deteriorate cell performance. Applying a protective coating on the surface of the interconnects is an effective strategy to solve this problem. (CuMn)_3O_4 spinel is a potential candidate-coating material. In this study, the performance of the CuMn_(1.8)O_4 at 750°C, the conductivities of the reaction layer formed between the coating and Cr_2O_3 scale, and the reduction of Cr ion diffusivity in Ni-doped (CuMn)_3O_4 were explored. CuMn_(1.8)O_4 coatings were found to be good Cr diffusion barriers at 750°C, with the coatings also acting as an excellent Cr getter. The conductivities of the reaction layer were found to be at least two orders of magnitude higher than that of Cr_2O_3, indicating the formation of the reaction layer is favorable compared to the thickening of the Cr_2O_3 scale at the coating/alloy interface. Ni-doped of (CuMn)_3O_4 decreased the diffusivity of Cr, making (CuMnNi)_3O_4 a promising candidate-coating material.
机译：在中间温度固体氧化物燃料电池（SOFC）堆叠中形成的CR_20_3刻度在中间温度固体氧化物燃料电池（SOFC）堆叠中具有可以恶化细胞性能的CR-中毒问题。在互连表面上施加保护涂层是解决这个问题的有效策略。 （CUMN）_3O_4尖晶石是潜在的候选涂层材料。在该研究中，探索了涂层和Cr_2O_3刻度之间形成的反应层的CUMN_（1.8）O_4的性能，并探讨了在涂层和CR_2O_3刻度之间形成的反应层的导电性，以及在Ni掺杂（CUMN）_3O_4中的CR离子扩散率的降低。发现CUMN_（1.8）O_4涂层在750℃下是良好的CR扩散屏障，涂层也用作优异的CR吸气剂。发现反应层的导电性比CR_2O_3的至少两个数量级，表示与涂布/合金界面的CR_2O_3刻度的增稠相比，反应层的形成是有利的。 Ni-掺杂（Cumn）_3O_4降低了Cr的扩散性，使（Cumnni）_3O_4成为有希望的候选涂层材料。

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