Nanoporous carbon capacitor energy storage

Are nanoporous carbon electrodes suitable for electrochemical capacitive energy storage?

This review is dedicated to covering the recent progress in nanoporous carbon electrodes for electrochemical capacitive energy storage. It has started up with detailing the fundamental basics of EDL formation from the view point of ion–electrode correlations at planar, 2D electrodes.

Why are highly porous carbon nanoparticles a suitable material for supercapacitor electrodes?

Highly porous carbon nanoparticles are very suitable materials for supercapacitor electrodes due to their combination of large surface area for ion adsorption and short pathways for fast ion diffusion.

Does pore size affect capacitance of nanoporous carbons?

Although high SSA is always beneficial for increasing capacitance, no direct trend has been established so far. Instead, it has been found that small pore size matters the most and leads to a capacitance increase for nanoporous carbons with pore size below 1 nm, due to the ion desolvation.

Can nanoparticles be used as electrodes in supercapacitors?

The nanoparticles were tested as electrodes in supercapacitors using mass loadings typical of commercial devices (ca. 10 mg cm −2). They achieved high capacitance values in a variety of electrolytes: 262, 168 and 155 F g −1 at 0.2 A g −1 in 1 M H 2 SO 4, 1 M TEABF 4 /AN and EMImTFSI/AN, respectively.

Do disordered carbons have more energy-dense supercapacitors?

More disordered carbons with smaller graphene-like domains show higher capacitances owing to the more efficient storage of ions in their nanopores. Our findings suggest ways to understand and exploit disorder to achieve highly energy-dense supercapacitors.

Are porous nanospheres suitable for supercapacitor electrodes?

The porous nanospheres possess a high electrical conductivity and specific surface areas exceeding 3000 m 2 g −1 due to their high content of micropores and small mesopores (<4 nm). Their highly developed and readily available porosity make these materials promising for use as supercapacitor electrodes.