TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The halogenated benzene compound if present at 0.1-50 pbw. The solution further comprises (pbw) organic peroxide (0.3-5) and sulfone compound (0.1-10).Preferred Compound: The organic peroxide is isobutyl peroxide, lauroyl peroxide, benzoyl peroxide, m-toluoyl peroxide, t-butyl peroxy-e-ethyl hexanoate, t-butyl peroxy bivalerate, t-butyl peroxy neodecanoate, diisopropyl peroxy dicarbonate, diethoxy peroxy dicarbonate, bis-(4-t-butylcyclohexyl)peroxy dicarbonate, dimethoxyisopropyl peroxy dicarbonate, dicyclohexyl peroxy dicarbonate or 3,3,5-trimethylhexanoyl peroxide. The sulfone compound is methyl sulfone, vinyl sulfone, phenyl sulfone, benzyl sulfone, tetramethylene sulfone, or butadiene sulfone. The halogenated benzene compound is or formula (II) or (III).    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The solution further comprises polyester (meth)acrylate or its polymer (0.1-50 pbw). The polyester (meth)acrylate or its polymer is a compound having a polyester polyol with at least 3 hydroxyl (-OH) groups, a hydroxyl group substituted by a (meth)acrylic ester group, and a hydroxyl group substituted by a radical non-reactive group. The radical non-reactive group is 1-20C aliphatic hydrocarbon, 5-20C aromatic hydrocarbon, 1-20C ether or 1-20C ester. The (meth)acrylic ester group is -OC(=O)RnOC(=O)CH=CH2, -OC(=O)RnOC(=O)C(CH3)=CH2 or -O(C=O)RnCH=CH2. The radical non-reactive group is -OC(=O)R'n, -OC(=O)RmR'n or -O(C=O)RmOC(=O)R'n.m, n = 1-20;R = optionally halogenated alkylene, arylene, alkylarylene or aralkylene;R' = optionally halogenated alkyl, aryl, alkylaryl or aralkyl.The polyester polyol is trimethylol, triethylol, tripropylol or glycerols.Preferred Ratio: The molar ratio of (meth)acrylic ester to the radical non-reactive group is 1:0.01-1:100.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Salt: The lithium salt is LiPF6. Preferred Definitions:    Y = -CF3, -CH2Cl, -CH2F, -C2F5, -CCl3 or -C2Cl5;    R1, R2, R4, R5 = H; and    R3 = H or Cl.    EXAMPLE - An ethylene carbonate (EC)/ethyl-methyl carbonate (EMC)/propylene carbonate (PC)/fluorobenzene (FB) mixed solvent, mixed in a weight ratio of 30:55:5:10, containing 1.15 M LiPF6 and trifluoromethoxybenzene (0.145 g) were mixed to prepare a non-aqueous electrolytic solution.