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A New High‐Performance Proton‐Conducting Electrolyte for Next‐Generation Solid Oxide Fuel Cells
Energy Technology ( IF 3.6 ) Pub Date : 2020-07-16 , DOI: 10.1002/ente.202000486
Nikdalila Radenahmad 1, 2 , Ahmed Afif 1 , Abdalla M. Abdalla 3 , Muhammad Saqib 4 , Jun-Young Park 4 , Juliana Zaini 1 , John Irvine 5 , Jung Hyun Kim 6 , Abul K. Azad 1
Affiliation  

Conventional solid oxide fuel cells (SOFCs) are operable at high temperatures (700–1000 °C) with the most commonly used electrolyte, yttria‐stabilized zirconia (YSZ). SOFC research and development activities have thus been carried out to reduce the SOFC operating temperature. At intermediate temperatures (400–700 °C), barium cerate (BaCeO3) and barium zirconate (BaZrO3) are good candidates for use as proton‐conducting electrolytes due to their promising electrochemical characteristics. Herein, two widely studied proton‐conducting materials with two dopants are combined and an attractive composition for the investigation of electrochemical behaviors is discovered. Ba0.9Sr0.1Ce0.5Zr0.35Y0.1Sm0.05O3−δ (BSCZYSm), a perovskite‐type polycrystalline material, has shown very promising properties to be used as proton‐conducting electrolyte at intermediate temperature range. BSCZYSm shows a high proton conductivity of 4.167 × 10−3 S cm−1 in a wet argon atmosphere and peak power density of 581.7 mW cm−2 in Ni–BSCZYSm | BSCZYSm | BSCF cell arrangement at 700 °C, which is one of the highest in comparison with proton‐conducting electrolyte‐based fuel cells reported until now.

中文翻译:

一种用于下一代固体氧化物燃料电池的新型高性能质子导电电解质

传统的固体氧化物燃料电池(SOFC)可以在高温(700–1000°C)下使用最常用的电解质,即氧化钇稳定的氧化锆(YSZ)进行操作。因此,进行了SOFC的研究和开发活动以降低SOFC的工作温度。在中等温度(400–700°C)下,铈酸钡(BaCeO 3)和锆酸钡(BaZrO 3)由于其有望实现的电化学特性而非常适合用作质子传导电解质。在此,将两种被广泛研究的质子传导材料与两种掺杂剂结合在一起,并发现了一种用于研究电化学行为的有吸引力的组合物。Ba 0.9 Sr 0.1 Ce 0.5 Zr 0.35Y 0.1 Sm 0.05 O 3− δ(BSCZYSm)是一种钙钛矿型多晶材料,在中等温度范围内已显示出非常有前途的性质,可用作质子传导电解质。BSCZYSm在湿氩气氛中显示出4.167×10 -3  S cm -1的高质子传导率,在Ni–BSCZYSm |中的峰值功率密度为581.7 mW cm -2。BSCZYSm | BSCF电池在700°C的温度下排列,与迄今为止报道的质子传导电解质基燃料电池相比,这是最高的之一。
更新日期:2020-09-05
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