Abstract: The long-term stability of VOCs gas sensor greatly restrains its application in household appliances. Improving and enhancing the working stability of VOCs sensitive material is the key to solve the sensor failure and the poor long-term stability of VOCs gas sensors. In this work, the experimental scene tests and long-term stability experiments of VOCs gas sensor based on VOCs sensitive material slurry formula are carried out. The results showed that the designed and optimized slurry formula can effectively reduce the working temperature of the sensor, improving its resistance to the changes and toxicity in external environment, and enhancing the gas sensitivity and long-term stability of the VOCs gas sensor. This work has reference value for the fabrication and design of VOCs gas sensors with the excellent long-term stability.

Key words: VOCs, Gas sensor, Long-term stability, Slurry formula