Disordered carbon structures enhance capacitive storage

Electrochemical energy storage (EES) is one of the key technologies in global research, focusing on the efficient storage and utilization of electrical energy generated from intermittent sources. The development of EES systems with high energy and power density is essential for meeting future energy demands electrochemical capacitors, such as capacitors, are capable of storing electrical energy obtained from intermittent sources and enabling the rapid energy transfer and transformation. Among these, electrical double-layer capacitances (EDLCs) within porous carbon materials (Fig. 1a), are commercially popular due to their excellent conductivity and relatively low cost. Despite their advantages, the complex structure of nanoporous carbon materials challenges in optimizing supercapacitor performance. While previous research has suggested that adjusting the pore size of nanoporous in carbon materials can enhance capacitive performance 1, conflicting reports and the lack of a definitive correlation between capacitance and pore size remain issues 2. Understanding the relationship between the structure of carbon materials and their capacitance is crucial for the design of devices with high energy density effectively.