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Copolymer gel electrolyte and preparation method thereof

A technology of gel electrolyte and copolymer, which is applied in the direction of capacitor electrolyte/absorbent, circuit, photosensitive equipment, etc. It can solve the problems of solvent volatilization, corrosion of counter electrode, short life, and difficulty in battery packaging, etc., and achieves mild operating conditions and improved performance. Conductivity, effect of reducing dark current

Inactive Publication Date: 2011-03-30
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 is the preparation and purification of (acrylic acid / allyloxy polyethylene glycol) copolymer

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

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

Embodiment 2

[0043] The first step is the preparation and purification of (acrylic acid / allyloxy polyethylene glycol) copolymer

[0044] A, 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 into the flask, venting nitrogen, room temperature Stir and prepolymerize for 0.5h; then slowly add dropwise a 5g aqueous solution of 2g of allyloxy polyethylene glycol to the above system, and stir for 12h at room temperature under nitrogen atmosphere; the molecular formula of allyloxy polyethylene glycol is CH 2 =CHCH 2 O(CH 2 CH 2 O) n H, n represents an integer of 44; the quality of acrylic acid, allyloxy polyethylene glycol, initiator ammonium persulfate and sodium bisulfite, crosslinking agent N, N-methylene bisacrylamide (Bis) and water The ratio is 1:0.625:0.2:0.05:0.005:3.12; pour the solution in ...

Embodiment 3

[0052] The first step is the preparation and purification of (acrylic acid / allyloxy polyethylene glycol) copolymer

[0053] A, 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 gas, room temperature Stir and prepolymerize for 0.5h; then slowly add dropwise a 5ml aqueous solution of 2g of allyloxy polyethylene glycol to the above system, and stir for 12h at room temperature under nitrogen atmosphere; the molecular formula of allyloxy polyethylene glycol is CH 2 =CHCH 2 O(CH 2 CH 2 O) n H, n represents an integer of 44; the quality of acrylic acid, allyloxy polyethylene glycol, initiator ammonium persulfate and sodium bisulfite, crosslinking agent N, N-methylene bisacrylamide (Bis) and water The ratio is 1:0.625:0.02:0.005:0.01:3.12; pour 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 (acrylic acid / allyloxy polyethylene glycol) copolymer and redox couple KI / I 2 The mixed formation belongs to the technical field of chemistry and energy batteries. Background technique [0002] Dye-sensitized solar cell (DSSC) is a new type of solar cell that is efficient, inexpensive, and pollution-free. year 1991, First use of bipyridine ruthenium(II) complex dye and nanoporous TiO 2 The dye-sensitized solar cell prepared by the thin film has a photoelectric conversion efficiency of 7.1%. Since then, DSSC has been continuously studied by a large number of researchers and has achieved considerable development. The composition of the liquid electrolyte in the US patent US 6479745 is 0.5mol / LKI, 0.05mol / L I 2 , The solvent is propylene carbonate, the conductivity measured at room temperature is 7.2mS.cm -1 . However, based on liquid electrolyte an...

Claims

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Application Information

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Patent Type & Authority Applications(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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