The present invention relates to an energy storage device comprising a
macroreticular carbonaceous material having a distribution of micropores,
mesopores and macropores wherein the macroreticular carbonaceous material
has a total surface area of from greater than 500 m.sup.2/g to 2500
m.sup.2/g and wherein 20% to 80% of the total surface area is due to
pores with diameters of from 17 angstroms to 100,000 angstroms. In
addition, the present invention relates to an energy storage device
comprising a macroreticular carbonaceous material having at least one
first distinct peak representing a pore size of less than or equal to 20
angstroms when measured utilizing H-K dv/dlog(W) pore size distribution
and at least one second distinct peak representing a pore size greater
than 20 angstroms when measured utilizing BJH dv/dlog(D) pore size
distribution.