TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The polymerizable cycloolefin monomer is a norbornene-based compound of formula (1), or dicyclopentadiene-based compound of formula (2). It comprises norbornene, 2-benzoyl-5-norbornene, ethyl 5 -norbornene-2-carboxylate, 2-acetyl-5-norbornene, 5-norbornene-2-yl acetate, cis-5-norbornene-exo-2,3-dicarboxylic acid anhydride, or dimethyl exo-tricyclo(4.2.1.0(2.5)nona-3,7-dienen-3,4-dicarboxylate). The dicyclopentadiene-based compound comprises dicyclopentadiene, 3a,4,7,7a-tetrahydro-4,7-methano-indene-1,8-dione, or methyldicyclopentadiene dimer. The polymerizable monomer is 0.5-10 pts.wt. The polymerization product of the cycloolefin monomer is a compound of formula (13) or (14).R1-R10=H, halo, OH group, carboxyl group, amino group, CN group, 2-20C alkyloxycarbonyl group, 2-20C alkylcarbonyl group, 2-20C alkylcarbonyloxy group, or 1-20C alkyl group, 1-20C alkoxy group, 2-20C alkenyl group, 2-20C alkynyl group, 6-30C aryl group, 7-30C arylalkyl group, 7-30C alkylaryl group, 1-20C heteroalkyl group or 4-30C heteroaryl group (all are optionally substituted); orR4, R5=-O; orR10, R11=O;R11, R12=R1; andn, k=1-100000.R7 and R9 may also bound to each other to form a 5-membered ring or 6-membered ring structure, or hetero cyclic structure. R8 and R10 together may also represent a single bond. EXAMPLE - Dicyclopentadiene (2 wt.%) was added to an organic solvent prepared by mixing ethylene carbonate, diethyl carbonate and fluoroethylene carbonate in a volume ratio of 2:6:2, and 1.3 M of lithium hexafluorophosphate was added to the mixture to prepare an organic electrolytic solution. An anode material was prepared in the following manner: silicon powder (1 g) having an average particle diameter of 0.1 mu m and graphite powder (2 g) having an average particle diameter of 6 mu m (mesocarbon microbeads) were mixed together. The mixture was mechanically milled for 1 hour. The anode was then prepared by mixing the silicon/graphite complex, a Grubbs catalyst II, carbon black and carboxyl methyl cellulose in a weight ratio of 62:20:15:3 in a mortar; adding water to the mixture to prepare a slurry; coating the resultant onto a copper foil having a thickness of 20 mu m; drying at 100 degrees C; and drying the resultant in vacuum at 120 degrees C for 3 hours. The anode, a lithium metal as a counter electrode, a polyethylene separator, and the organic electrolytic solution were used to manufacture a 2016 coin cell.