Research ArticleDevelopment of self-powered wireless high temperature electrochemical sensor for in situ corrosion monitoring of coal-fired power plant

- We develop wireless high temperature electrochemical sensor technology.
- This self-powered sensor demonstrates the successful wireless signals transmission.
- Coal ash hot corrosion potential and current noise signals are wirelessly recorded.
- We prove the sensor sensitivity for in-situ corrosion monitoring.

Reliable wireless high temperature electrochemical sensor technology is needed to provide in situ corrosion information for optimal predictive maintenance to ensure a high level of operational effectiveness under the harsh conditions present in coal-fired power generation systems. This research highlights the effectiveness of our novel high temperature electrochemical sensor for in situ coal ash hot corrosion monitoring in combination with the application of wireless communication and an energy harvesting thermoelectric generator (TEG). This self-powered sensor demonstrates the successful wireless transmission of both corrosion potential and corrosion current signals to a simulated control room environment.