Lithium Secondary Battery

Abstract

Provided is a lithium secondary battery improved in characteristics by reducing resistance of an electrode-electrolyte interface. The lithium secondary battery includes: a positive electrode made of a solid capable of intercalation and deintercalation of a lithium ion; a lithium ion-conductive electrolyte including a quinone which is an organic compound; and a negative electrode made of a solid capable of occlusion and release of a lithium metal or a lithium ion. The organic compound includes any one or more of anthraquinone (AQ), 2,5-dihydroxy-1,4-benzoquinone (DHBQ), 7,7,8,8-tetracyanodimethane (TCNQ), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), tetrahydroxy-1,4-benzoquinone (THBQ), and 2,5-di-tert-butyl-1,4-benzoquinone (DBBQ).

Dependencies are inferred from the claim text.