TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The alkoxide is of formula (III) (preferably methoxide and ethylate of Li+, Na+, K+ or the quaternary ammonium cation). (Structure (III), US2014072882A1-002)R'a,R'b,R'c=H, alkyl, alkylene or aryl;A'= Li+, Na+, K+ or quaternary ammonium cation.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The silicon-containing polymeric monomer B is at least one selected from L'Si(OCH2X)3, (L')2Si(OCH2X)2 or Si(OCH2X)4 (preferably L'Si(OCH3)3, (L')2Si(OCH3)2 and Si(OCH3)4, especially CH3Si(OCH3)3 and (CH3)2Si(OCH3)2); or L'SiCl3, (L')2SiCl2 and SiCl4 (preferably CH3SiCl3 and (CH3)2SiCl2). The silicon-containing polymeric monomer B further comprises silicon-containing control monomer D which is at least one selected from T1Si(OCH3)3 and (T1)2Si(OCH3)2 (preferably CH3Si(OCH3)3 or (CH3)2Si(OCH3)2). The polymeric monomer C is H2O, or compound having hydroxyl, and/or amido at both terminals of its molecule (preferably H2O, HO-R'x-OH, R'y-NH-R'x-NH-R'y, H2N-R'xNH2, HO-R'x-NH2 or HO-R'x-NH-R'y (preferably HO-CH2CH2-OH, R'y-NH-CH2CH2-NH-R'y, H2N-CH2CH2-NH2, HO-CH2CH2-NH2 or HO-CH2CH2-NHR'y).X=H, methyl, ethyl, propyl, butyl or phenyl;L'=methyl, ethyl, propyl, phenyl, -N-R'x-OH or -O-R'x-OH;T1=methyl, ethyl, propyl, butyl or phenyl. Preferred Definitions:    Y1=-O-, -COO-, -S-, -SO3-, -N-R'x-O-, -O-R'x-NH-, -O-R'x-O-, -N(R'y)-R'x-N-R'y or -NH-R'x-NH-;    R'y=alkyl or aryl;    A=Li+, Na+, K+ or quaternary ammonium cation;    R1,R2=at least one crosslinking group which is formed by a crosslinking monomer having a polymerizing function, and the crosslinking monomer is at least one selected from HO-R'x-OH, HO-R'x-NH2, H2N-R'x-NH2, R'y-NH-R'x-NH-R'y or HO-R'x-NH-R'y.    At least one of the substituting groups R1 and R2 is -O-Li+.    EXAMPLE - 0.200 mol of Lithium metal was added into 200 ml of methanol to react completely to produce lithium methoxide solution. Organosilicon-polymer solid electrolyte was synthesized as follows: 100 ml of methanol was added into a stirred tank reactor as a solvent. 0.150 mol of CH3Si(OCH3)3 and 0.050 mol of (CH3)2Si(OCH3)2 were added into the reactor. 0.010 mol of (CH3CH2)2Si(OCH3)2 was added as a silicon control monomer, and then the methanol solution of the lithium methoxide was added. Then, 0.300 mol of H2O was added into the reactor while being stirred. The mixed solution was stirred and heated to 80 degrees C, and the reaction proceeded for 4 hours at this temperature to produce an organosilicon polymer. The organosilicon polymer was used to directly prepare an organosilicon-polymer solid electrolyte.