Carbon nanofibers and nanotubes have a very large aspect ratio of length to diameter, which enables them to easily interconnect between powder particles. Super P however consists of amorphous carbon particles with diameters between 30-40 nm which allows them to occupy the pore space provided by solid electrolyte/active material particles. This large particle size ratio between active particles and carbon has been shown to also give rise to a low percolation threshold in powder mixtures .