In an electrode for an electric double layer capacitor of the present invention,
the peak value of particle size distribution of graphite particles added to a conductive
adhesive is in a range of 2.6 to 3.2 m, not less than 100,000 dimples having
a largest outer diameter in a range of 4 to 10 m and a depth in a range
of 4 to 15 m are formed on the surface of the collector sheet per 1 cm2,
and the occupied area of the dimples to the entire surface area of the collector
sheet is not more than 50%. By determining the saponification value of polyvinylalcohol
which is used as a binder component of the conductive adhesive in a range of 90.0
to 98.5, adhesiveness of the collector sheet and the electrode forming sheet is
improved. Furthermore, by substituting H atoms contained in the polyvinylalcohol
with Si atoms, adhesiveness of the collector sheet and the electrode forming sheet
can be further improved.
