| 초록 |
In recent years there has been an increased interest in monitoring and controlling such constituents of engine exhaust as O2, CO, CO2, NOx, and hydrocarbons. Li2TiO3 is used as cathode material in carbon dioxide sensor, anode material in lithium ion batteries and tritium breeder materials in the blanket of fusion reactors. Carbon dioxide sensors are becoming increasingly important for many applications, such as monitoring air quality and controlling combustion. The CO2 detection approach uses an electrochemical cell with lithium (Li)-based electrolyte whose voltage output depends on the CO2 concentration in the environment. A solid potentiometric CO2 gas sensor has been developed using Li3PO4 as the electrolyte, Li2TiO3/TiO2 as the reference electrode, and Li2CO3 as the sensing electrode. The basic sensig mechanism is to measure the equilibrium potential difference between sensing and reference electrodes. Li2TiO3/TiO2 enables this senser to avoid oxygen interference. In this study, Li2TiO3 powders were prepared by the hydrothermal method with TiO2 and LiOH. The phase presence and surface morphology were characterized by XRD and SEM techniques, respectively. |
