Exploring MnCr2O4-Gd0.1Ce0.9O2-delta as a composite electrode material for solid oxide fuel cell
Exploring MnCr2O4-Gd0.1Ce0.9O2-delta as a composite electrode material for solid oxide fuel cell
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探索MnCr2O4-Gd0.1Ce0.9O2-delta作为固体氧化物燃料电池复合电极材料
DOI：
10.1016/j.ijhydene.2019.09.196
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发表时间：
2019
影响因子：
7.2
通讯作者：
Luo Jing-Li
中科院分区：
文献类型：
--
作者：
Li Peiyao;Duan Nanqi;Ma Jiyang;Jia Lichao;Chi Bo;Pu Jian;Li Jian;Luo Jing-Li
对称式固体氧化物燃料电池(SOFC)在两个电极上采用相同的材料，有可能促进邻近组件之间的热机械兼容性，降低电堆成本。本文采用共浸法制备的MnCr2O4-Gd0.1Ce0.9O2-δ(MCO-GDC)复合电极，在湿(3%H2O)氢气和空气中，在650~800℃的温度范围内对对称电解液支撑和阳极支撑的固体氧化物燃料电池电极进行了评价。在不含任何碱土元素和钴的情况下，共渗MCO-GDC复合电极表现出良好的氧还原反应活性，但氢氧化反应活性较差。以MCO-GDC为阴极的Ni-YSZ(Y2O_3稳定的ZrO_2)阳极支撑的非对称电池在800℃时的峰值功率密度为665 mW/cm−_2，表明MCO-GDC是一种有前途的固体氧化物燃料电池正极材料。
Symmetrical solid oxide fuel cell (SOFC) adopting the same material at both electrodes is potentially capable of promoting thermomechanical compatibility between near components and lowering stack costs. In this paper, MnCr2O4–Gd0.1Ce0.9O2-δ(MCO-GDC) composite electrodes prepared by co-infiltration method for symmetrical electrolyte supported and anode supported solid oxide fuel cells are evaluated at a temperature range of 650–800 °C in wet (3% H2O) hydrogen and air atmospheres. Without any alkaline earth elements and cobalt, the co-infiltrated MCO-GDC composite electrode shows excellent activity for oxygen reduction reaction but mediocre activity for hydrogen oxidation reaction. With MCO-GDC as the cathode, the Ni-YSZ (Y2O3stabilized ZrO2) anode supported asymmetrical cell demonstrates a peak power density of 665 mW cm−2at 800 °C. The above results suggest MCO-GDC is a promising candidate cathode material for solid oxide fuel cells.