NOVELTY - Electrode comprises diazine compounds (Q) or their salts.    USE - The electrode i.e. anode is useful for a lithium secondary battery (all claimed) that is useful in an electric vehicle, a notebook, and a cellular phone.    ADVANTAGE - The electrode can be eco-friendly manufactured.    DETAILED DESCRIPTION - Electrode comprises diazine compounds (Q) of formulae (I)-(III) or their salts.    Ring a, b = 1-5C alkyl, 1-5C alkenyl, 1-5C alkynyl, halo, -OH, oxo, methyl, 1-5C alkoxy, 1-6C alkyl, -NR6R7, nitro, 1-30C aryl, 1-6C alkoxy, 1-30C heterocyclic aryl, 1-30C cycloalkyl, 1-30C heterocycloalkyl, or 1-30C aromatic hydrocarbyl (all optionally substituted by -C(O)NR6R7, -C(O)R8, -CN, -C(O)-O-R5, 1-5C alkyl, 1-5C alkenyl, 1-5C alkynyl, halo, -OH, oxo, methyl, 1-5C alkoxy, 1-6C alkoxy, 1-6C alkyl, -NR6R7, nitro, 1-30C aryl, 1-30C heterocyclic aryl, 1-30C cycloalkyl, 1-30C heterocycloalkyl alkyl, -C(O)-O-R5, -C(O)NR6R7, -C(O)R8, or -CN);    Ring c = 1-5C alkyl, 1-5C alkenyl, 1-5C alkynyl, halo, -OH, oxo, methyl, 1-5C alkoxy, 1-6C alkoxy, 1-6C alkyl, -NR6R7, nitro, 1-30C aryl, 1-30C heteroaryl, 1-30C cyclo alkyl, 1-30C heterocycloalkyl, (all optionally substituted by -C(O)-O-R5, -C(O)R8, -CN, -C(O)NR6R7, 1-30 cyclic hydrocarbyl, 1-5C alkyl, 1-5C alkenyl, 1-5C alkynyl, halo, -OH, oxo, methyl, 1-5C alkoxy,1-6C alkoxy, 1-6C alkyl, -NR6R7, nitro, 1-30C aryl, 1-30C heteroaryl, 1-30C cycloalkyl, 1-30C heterocycloalkyl, -C(O)-O-R5, -C(O)NR6R7, 1-30C cyclic hydrocarbyl, or -C(O)R8);    R1, R2 = H, 1-5C alkyl, 1-5C alkenyl, 1-5C alkynyl, halo, -OH, oxo, methyl, 1-5C alkoxy, 1-6C alkyl, 1-6C alkoxy, -NR6R7, nitro, 1-30C aryl, 1-30C heteroaryl, 1-30C cycloalkyl, 1-30C heterocycloalkyl, -C(O)-O-R5, -C(O)NR6R7, -C(O)R8, -CN, 1-30C alkyl, 1-30C alkenyl, 1-30C alkynyl, 1-30C aryl hydrocarbyl, or 1-30C heterocyclic ring;    R3, R4 = 1-5C alkyl, 1-5C alkenyl, 1-5C alkynyl, halo, -OH, oxo, methyl, 1-5C alkoxy, 1-6C alkyl, -NR6R7, nitro, 1-30C aryl, 1-30C heteroaryl, 1-30C alkyl, 1-30C heterocycloalkyl, 1-30C alkoxy, 1-30C cycloalkyl, or -C(O)-O-R5, (all optionally substituted by -C(O)NR6R7, -C(O)R8, -CN, 1-5C alkyl, 1-5C alkenyl, 1-5C alkynyl, 1-5C -OH, oxo, methyl, 1-5C alkoxy, 1-6C alkoxy, -NR6R7, nitro, 1-30C aryl, 1-30C heteroaryl, 1-30C cycloalkyl, 1-30C heterocycloalkyl, -C(O)-O-R5, -C(O)NR6R7, 1-30C alkenyl, 1-30C alkynyl, 1-30C alkoxy, 1-30C aryl hydrocarbyl, amino group, carbonyl, H, halo, carboxyl, or mercapto);    R5 = H or 1-5C alkyl;    R6, R7 = H, -C(O)R8, -C(O)-O-R5, 1-5C alkyl, 1-5C alkoxy, 1-5C heteroaryl (all optionally substituted by oxo, hydroxyl, amino, 1-20C aryl, or 1-20C arylalkyl), or heteroaryl (optionally substituted by 1-5C alkoxy, hydroxyl, 1-20C amino or oxo); and    R8 = heteroaryl, H, 1-5C alkyl, 1-20C aryl, 1-20C cycloalkyl, 1-20C heterocycloalkyl alkyl, 1-20C arylalkyl, 1-20C heteroaryl, 1-20C cycloalkyl, 1-20C alkyl or 1-20C heterocycloalkyl.    An INDEPENDENT CLAIM is included for a lithium secondary battery, comprising the electrode, a cathode, and an electrolyte.