The demand for clean and sustainable energy has garnered great interest in new energy materials. Among them, high temperature proton-conducting perovskite oxides are, or can be widely used in clean energy applications (including fuel cells, electrochemical reactors, solid-state separators and supports of catalytic components via various reduction and oxidation reactions) in the intermediate temperature range. The control of defect chemistry is the main strategy to fine tune properties for these applications. This review provides a critical discussion about non-stoichiometry-structure-property relation in terms of structure distortions by intrinsic octahedral titling and extrinsic acceptor doping, chemical stability, hydration behavior, transport properties, and catalytic effects in some typical classes of proton conducting perovskites and perovskite-related derivatives. A good understanding of A-site and B-site non-stoichiometry is also given to allow the perovskite structure with desired properties.

对清洁和可持续能源的需求引起了人们对新能源材料的极大兴趣。其中，高温质子传导钙钛矿氧化物已经或可以广泛用于中等温度范围的清洁能源应用（包括燃料电池，电化学反应器，固态分离器和通过各种还原和氧化反应的催化组分载体） 。缺陷化学的控制是针对这些应用微调性能的主要策略。这篇评论就非化学计量-结构-性质之间的关系就本征八面体滴定和非本征受体掺杂，化学稳定性，水合行为，传输性质，质子传导钙钛矿和钙钛矿相关衍生物的一些典型类别中的催化作用和催化作用。还对A位和B位的非化学计量学有很好的理解，以使钙钛矿结构具有所需的性能。