ADDITIVE FOR ELECTROCHEMICAL ELEMENT POSITIVE ELECTRODE, COMPOSITION FOR ELECTROCHEMICAL ELEMENT POSITIVE ELECTRODE INCLUDING SAID ADDITIVE, AND ELECTROCHEMICAL ELEMENT

The present invention relates to an additive for an electrochemical element positive electrode comprising an activated carbon, wherein the activated carbon has a specific surface area in accordance with BET method of 1300-2500 m/g, a pore volume of pores having a diameter of 2 nm or more of 0.35 cm/g or less, a pore volume of pores having a diameter less than 2 nm of 0.5 cm/g or more, and an ash content of 0.5% by weight or less.