2001 Volume 69 Issue 6 Pages 462-466
Rate capability of activated carbon fiber with controlled pore structure has been investigated as the electrode of electric double layer capacitors using organic electrolyte solutions. The pore structure of carbon fiber much influenced the rate capability, depending on the composition of the organic electrolytes. The carbon fiber with developed mesopore structure that has been prepared from pitch containing acetylacetonatoyttrium, Y(acac)3, showed high rate capability, whereas the conventional carbon fiber with smaller average pore size gave poor rate capability. Effects of the cation size of the electrolyte on the rate capability was relatively small for the activated carbon fiber with mesopore structure.
