A Flexible Ammonia Gas Sensor Based on a Grafted Polyaniline Grown on a Polydopamine-Coated Polymer Film

摘要

Ammonia gas is generated by various industrial and agricultural activities and is considered an alternative energy to replace petroleum. However, if such a toxic gas becomes widespread as an energy source, leakage detection will be essential. Therefore, the development of a small and low-cost sensor that can easily measure the concentration of ammonia gas will be increasingly needed. In order to develop a new ammonia gas sensor that meets various other requirements such as low power consumption and good flexibility, while also improving basic performance, it is essential to develop novel gas-sensing materials. We report a new method that can uniformly and conveniently prepare a grafted conductive polyaniline (PANI) film on a flexible polyethylene terephthalate (PET) film, which can realize the development of a sensor that is flexible and does not require a heater.