Complex sentence: IEEE Spectrum, November 2007 Their cell design used two layers of activated charcoal separated by a thin porous insulator and this basic mechanical design remains the basis of most electric double-layer capacitors.
Split into simpler sentences: IEEE Spectrum, November 2007 Their cell design used two layers of activated charcoal separated by a thin porous insulator. This basic mechanical design remains the basis of most electric double-layer capacitors.