5.5.2 Response/Recovery Behaviors of Solid Electrolyte CO2 Gas Sensors Depending on Reference Materials
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- 5.5 Cation Conductor-based Gas Sensors
- H. Lee, N. Choi, S. Moon, W. Yang, J. Kim - Electronics & Telecommunications Research Institutes (ETRI) (South Korea)
- 493 - 496
Effects on response and recovery behaviors depending on reference materials such as lithium cobalt oxide (LiCoO2) and lithium manganese oxide (LiMn2O4) as well as lithium titanate (Li2TiO3) were investigated by fabricating the sensor composed of those reference materials and a sensing material Li2CO3 on a solid electrolyte Li3PO4. Selection of the reference materials was adopted from cathode materials in lithium ion battery field because of the similar working mechanism. The results showed that LiMn2O4 and LiCoO2 as the reference materials were effective in enhancing ΔEMFs/decade value and recovery time of the sensors compared to Li2TiO3, which might come from the facile lithiation of the reference materials, LiMn2O4 and LiCoO2, resulting from their unique crystal structures.