质子传导型固体氧化物电解池中电解质材料的研究进展

Progress in Electrolytes of Proton Conducting Solid Oxide Electrolysis Cells

质子传导型固体氧化物电解池(H-SOEC)相比于氧离子传导型固体氧化物电解池(O-SOEC)优点甚多,但是其发展远落后于O-SOEC,这主要是由于技术上存在更多挑战,例如在含H2O和CO2的气氛中电解质的稳定性。近年来,质子传导型电解质由于其在中温下具有较高的离子导电性和较低的活化能,且在H-SOEC的氢电极侧直接生成干纯氢气等优势而引起广泛的关注。综述了关于质子传导型固体氧化物电解池中电解质材料的研究进展,重点关注了国内外研究者在BaCeO3、BaZrO3及其固溶体方面的最新研究成果和相关应用,并对潜在的研究方向进行了展望。

Proton conducting solid oxide electrolysis cells(H-SOECs)have more advantages than oxygen ion conducting solid oxide electrolysis cells(O-SOECs).However,the development of H-SOECs lags far behind O-SOECs,due mainly to technical challenges such as the instability of electrolyte in an atmosphere containing H2O and CO2.The proton conducting electrolytes have attracted increasing attention,owing to their higher ionic conductivity and lower conducting activation energy at a medium temperature and the direct production of dry and pure hydrogen at the hydrogen gas side.This article is aimed to summarize the progress of proton conducting electrolyte materials of H-SOECs,focusing on the latest achievements and applications of BaCeO3,BaZrO3 and BaCeO3-BaZrO3 solid solutions,together with a discussion on prospects and potential research directions in the near future.