👉 Junk fluid, also known as pseudocapacitance or charge-trapping fluid, refers to a type of ionic liquid or electrolyte solution that, despite not contributing significantly to the overall capacitance of a battery or supercapacitor, plays a crucial role in enhancing performance and stability. These fluids often contain redox-active species that can undergo reversible oxidation or reduction reactions, leading to additional charge storage mechanisms beyond simple electrostatic double-layer capacitance. While they do not store as much charge per unit volume or surface area as traditional electrolytes, their presence can improve ionic conductivity, reduce internal resistance, and enhance the overall efficiency and lifespan of energy storage devices.
