Tuning the electrochemical performances of anthraquinone organic cathode materials for Li-ion batteries through the sulfonic sodium functional group

Abstract

The effects on electrochemical performance of C₁₄H₈O₂ organic cathode materials with and without SO₃Na– functional groups for lithium ion batteries were investigated. The Na₂C₁₄H₆O₈S₂ with two SO₃Na– shows the best cycle performance and highest lithium storage voltage, while an outstanding rate performance is also achieved after combination with graphene paper.