Gas sensors with trivalent cation-conducting solids have been reviewed. In general, because ionic conductivity in solids is strongly influenced by the valence state of migrating ion species, multivalent cation conducting solids are not considered to be suitable candidates for electrochemical devices, including gas sensors. However, the discovery of highly trivalent cation conducting solids in two- or three-dimensional network structures has resulted in gas sensors with high sensing performances for CO₂, NO_x, and NH₃ even at moderate temperatures. These sensors provide a strategy for developing novel solid electrolyte-type gas sensors with enhanced selectivity, sensitivity, and long-term stability.

已经审查了具有三价阳离子导电固体的气体传感器。一般来说，由于固体中的离子电导率受到迁移离子物质的价态的强烈影响，因此多价阳离子导电固体不被认为是电化学装置（包括气体传感器）的合适候选者。然而，二维或三维网络结构中的高三价阳离子导电固体的发现导致气体传感器即使在中等温度下也具有对 CO ₂、NO _x和 NH _{3的高传感性能。}这些传感器为开发具有增强的选择性、灵敏度和长期稳定性的新型固体电解质型气体传感器提供了一种策略。