▎ 摘　　要

NOVELTY - A positive electrode composition comprises a resorufin derivative. USE - Composition used for forming positive electrode for lithium-ion secondary battery (all claimed) for electronic devices and electric vehicles. ADVANTAGE - The positive electrode composition provides lithium-ion secondary battery with excellent charge/discharge characteristics, and coulombic efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a positive electrode, which comprises the positive electrode composition; and (2) a lithium-ion secondary battery, which comprises the positive electrode.