Polypyrrole-engineered nickel-based composite electrodes for thermocells with enhanced power output and stability

Abstract

This study develops efficient, durable, and low-cost polypyrrole-nickel composite electrodes for thermocells via electrodeposition. The proposed electrode design improves wettability, enhances electrochemical activity, and reduces corrosion, achieving enhanced output power compared to pristine nickel or platinum and facilitating low-grade heat harvesting applications.