Advancing 2D-Heterostructure Materials for High-Performance Supercapacitors: Integrating SECM and In-Situ Characterization Techniques

The SUPCAP project aims to develop a new 2D heterostructure electrode material that embeds metal phosphides between graphene oxide sheets for enhanced energy storage applications. This method will address the difficulty of developing conductive, high-capacitive, and stable charge storage materials by combining battery-type and capacitive materials in a layered configuration. We will use a ""Nano-to-Nano"" approach to make all-solid-state symmetric devices using electrophoretic and electrochemical deposition (EPD/ECD) techniques. This will eliminate the need for binders, making the process cheaper and more useful in industry.The research will use in-situ Raman spectroscopy to monitor electrode structural changes in real time throughout charge and discharge cycles. Furthermore, scanning electrochemical microscopy (SECM) will allow for localized deposition of 2D materials by varying local pH and ionic strength. Our goal is to reach a specific capacity of more than 1000 mAhg-1 and a power density of more than 100 kWkg-1. We intend to employ these materials to create 3D-printed micro-supercapacitors for wearable devices, biomedical applications, and airplane backup power systems. This work aims to significantly advance flexible energy storage technology by integrating synthesis, density functional theory (DFT) analysis, and deposition technique optimization to bridge the gap between batteries and supercapacitors. ""