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Copolymer gel electrolyte and preparation method thereof

A gel electrolyte, copolymer technology, applied in capacitor electrolyte/absorbent, circuit, photosensitive equipment, etc., can solve the problems of solvent volatilization, battery packaging difficulty, corrosion of counter electrode and short life, etc., to achieve mild operating conditions, reduce Dark current, the effect of improving conductivity

Inactive Publication Date: 2012-05-23
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on liquid electrolytes and DSSCs, there are disadvantages such as difficult battery packaging, solvent volatilization, dye desorption, corrosion of the counter electrode, and short life, while polymer electrolytes have the advantages of simple packaging, low cost, and stable performance, which has aroused strong interest of researchers.

Method used

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  • Copolymer gel electrolyte and preparation method thereof
  • Copolymer gel electrolyte and preparation method thereof
  • Copolymer gel electrolyte and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The first step, preparation and refining of (acrylic acid / allyloxypolyethylene glycol) copolymer

[0033] A, the preparation of (acrylic acid / allyloxy polyethylene glycol) copolymer

[0034] Add 3.2g of acrylic acid, 0.064g of initiator ammonium persulfate and 0.016g of sodium bisulfite, 0.064g of cross-linking agent N, N-methylenebisacrylamide (Bis), and 5g of water in the flask, nitrogen flow, room temperature Stir for pre-polymerization for 0.5h; then slowly add 2g of allyloxypolyethylene glycol 5g aqueous solution dropwise to the above system, and stir at room temperature for 12h under a nitrogen atmosphere; the molecular formula of allyloxypolyethylene glycol is CH 2 =CHCH 2 O(CH 2 CH 2 O) n H, n represents an integer of 44; quality of acrylic acid, allyloxypolyethylene glycol, initiator ammonium persulfate and sodium bisulfite, crosslinking agent N, N-methylenebisacrylamide (Bis) and water The ratio is 1: 0.625: 0.2: 0.05: 0.2: 3.12; the solution in the flask...

Embodiment 2

[0043]The first step, preparation and refining of (acrylic acid / allyloxypolyethylene glycol) copolymer

[0044] A, the preparation of (acrylic acid / allyloxy polyethylene glycol) copolymer

[0045] Add 3.2g of acrylic acid, 0.064g of initiator ammonium persulfate and 0.016g of sodium bisulfite, 0.016g of cross-linking agent N, N-methylenebisacrylamide (Bis), and 5g of water in the flask, nitrogen flow, room temperature Stir for pre-polymerization for 0.5h; then slowly add 2g of allyloxypolyethylene glycol 5g aqueous solution dropwise to the above system, and stir at room temperature for 12h under a nitrogen atmosphere; the molecular formula of allyloxypolyethylene glycol is CH 2 =CHCH 2 O(CH 2 CH 2 O) n H, n represents an integer of 44; quality of acrylic acid, allyloxypolyethylene glycol, initiator ammonium persulfate and sodium bisulfite, crosslinking agent N, N-methylenebisacrylamide (Bis) and water The ratio is 1: 0.625: 0.2: 0.05: 0.005: 3.12; the solution in the flas...

Embodiment 3

[0052] The first step, preparation and refining of (acrylic acid / allyloxypolyethylene glycol) copolymer

[0053] A, the preparation of (acrylic acid / allyloxy polyethylene glycol) copolymer

[0054] Add 3.2g of acrylic acid, 0.064g of initiator ammonium persulfate and 0.016g of sodium bisulfite, 0.032g of cross-linking agent N, N-methylenebisacrylamide (Bis), and 5ml of water in the flask, nitrogen flow, room temperature Stir for pre-polymerization for 0.5h; then slowly add 2g of allyloxypolyethylene glycol 5ml aqueous solution dropwise to the above system, and stir at room temperature for 12h under a nitrogen atmosphere; the molecular formula of allyloxypolyethylene glycol is CH 2 =CHCH 2 O(CH 2 CH 2 O) n H, n represents an integer of 44; quality of acrylic acid, allyloxypolyethylene glycol, initiator ammonium persulfate and sodium bisulfite, crosslinking agent N, N-methylenebisacrylamide (Bis) and water The ratio is 1: 0.625: 0.02: 0.005: 0.01: 3.12; the solution in the ...

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Abstract

The invention relates to a copolymer gel electrolyte, in particular to a copolymer gel electrolyte and a preparation method thereof. The copolymer gel electrolyte is (acrylic acid / allyloxy polyethylene glycol) copolymer / KI / I2 gel electrolyte and the invention further relates to a synthetic route of the copolymer gel electrolyte. The synthetic route is as follows: (a) preparing the (acrylic acid / allyloxy polyethylene glycol) copolymer; and (b) preparing the (acrylic acid / allyloxy polyethylene glycol) copolymer / KI / I2 gel electrolyte. The synthetic technological route of the invention is simple,the operating conditions are wild, the purification step of the product is simple, the yield is high; carboxyl groups in the copolymer can combine with K<+>, thus decreasing the dark current and increasing the conductivity; and the copolymer gel electrolyte has the advantages of easy encapsulation method, good electrochemical stability and the like and is expected to be widely used in the preparation of the solar cell.

Description

technical field [0001] The invention relates to a copolymer gel electrolyte and a preparation method thereof. The gel electrolyte is a (acrylic acid / allyloxy polyethylene glycol) copolymer and a redox pair KI / I 2 The invention is formed by mixing, and belongs to the technical field of chemistry and its energy battery. Background technique [0002] Dye-sensitized solar cell (DSSC) is a new type of solar cell with high efficiency, low cost and no pollution. year 1991, First use of bipyridyl ruthenium(II) complex dyes and nanoporous TiO 2 The dye-sensitized solar cell prepared by thin film obtained a photoelectric conversion efficiency of 7.1%. Since then, DSSC has been continuously studied by many researchers and has made great progress. In U.S. Patent US 6479745, the liquid electrolyte components are 0.5mol / LKI, 0.05mol / L I 2 , the solvent is propylene carbonate, and the measured conductivity at room temperature is 7.2mS.cm -1 . However, based on liquid electrolytes a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/028H01G9/20C08F290/06H01L51/44H01L51/48H01M14/00
CPCY02E10/549Y02P70/50
Inventor 宋春梅张亮赵丹梁晟斌常飞
Owner EAST CHINA NORMAL UNIV
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