Interface engineered carbon–polymer interlayers for high efficiency supercapacitor electrodes

This study delves into the critical role of carbon-polymer interlayers in enhancing the performance of supercapacitor electrodes. By applying a carbon-polymer primer layer to stainless steel mesh, researchers have significantly improved electron transport and cycling stability. The research highlights the importance of interfacial contact and adhesion in pseudocapacitive electrodes, demonstrating that the primer layer reduces contact resistance and enhances charge transfer. The study also explores the impact of varying conductive additive ratios on electrode performance, showing that the primer layer mitigates the dependency on conductive additives. Through extensive electrochemical testing, including cyclic voltammetry, galvanostatic charge-discharge measurements, and electrochemical impedance spectroscopy, the researchers provide a comprehensive analysis of the primer layer's effects. The results indicate that the primer-coated electrodes exhibit superior rate capability and long-term cycling stability, making them a promising solution for high-performance energy storage devices. This research offers valuable insights into the design and optimization of pseudocapacitive electrodes, paving the way for more efficient and durable supercapacitors.