摘要：为研究气敏材料的敏感机理,获得提高材料气敏性能、开发新型气敏材料的理论指导,介绍了气敏材料的概念、分类,并从气体与敏感材料的物理、化学等相互作用出发,结合气敏材料电学性质的变化,对其敏感机理及模型进行了较为详细的阐述,指出气敏机理研究对于解决气敏材料选择性、稳定性差以及工作温度高等现存问题有着重要的意义。

关键词： 气敏材料；气敏机理；模型

Abstract: In order to study the sensitive mechanism of gas sensing materials, improve its sensitivity and develop new gas sensing materials, the definition and classification of gas sensing material were introduced. The sensitive mechanisms and models of gas sensing materials were reviewed based on the electric change of sensing materials caused by actions between gases and materials. It is presented that studying the sensitive mechanism of gas sensing materials is important to improve its unstable sensitivity and high work temperature. 

Keywords: gassensing materials; sensitive mechanism; model