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Precursor solution, porous anti-fouling interface, battery electrode, battery and preparation method

A technology of precursor solution and battery, which is applied in the fields of battery and preparation, precursor solution, porous anti-fouling interface, and battery electrode, and can solve problems such as enzyme shedding and biological pollution, and achieve improved enzyme fixation, high power output, and improved The effect of bioelectrocatalytic performance

Active Publication Date: 2021-12-07
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems in the prior art that biological fuel cells are negatively affected by biological fluids when they work in body fluids, such as biological pollution and enzyme shedding, the present invention provides a precursor solution, a porous anti-fouling interface, a battery electrode, a battery and a preparation method, it can not only resist the biological contamination of body fluids, but also continuously permeate the reactants, and improve the immobilization of enzymes, further enhance the overall bioelectrocatalytic performance, and open up a new direction for high-performance implantable electronic devices applied in biomedicine

Method used

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  • Precursor solution, porous anti-fouling interface, battery electrode, battery and preparation method
  • Precursor solution, porous anti-fouling interface, battery electrode, battery and preparation method
  • Precursor solution, porous anti-fouling interface, battery electrode, battery and preparation method

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preparation example Construction

[0060] A method for preparing a high-power implanted biofuel cell with a porous antifouling interface provided by the present invention, the specific steps are as follows:

[0061] Coat the upper half of the carbon nanotube fiber with Dow Corning DC184 polydimethylsiloxane, and react in a blast oven at 85-95° C. for 1-2 hours to form a uniform insulating polydimethylsiloxane film. The remaining part without insulation treatment is subjected to cyclic voltammetry scanning in an ice-water bath and deoxygenated 2-aminoanthracene diazonium cation solution to obtain a carbon nanotube / 2-aminoanthracene composite fiber. Coating 15-30 μL of the precursor solution of the porous anti-fouling interface containing bilirubin oxidase on the carbon nanotube / 2-aminoanthracene composite fiber, and forming a porous anti-fouling interface after ultraviolet irradiation at room temperature to obtain a biopositive electrode;

[0062] The carbon nanotube fiber is immersed in a methylene blue solutio...

Embodiment 1

[0090] Preparation of porous antifouling interface. Add 0.05 g of polyvinyl alcohol into 10 mL of deionized water, stir and dissolve at 97°C to obtain a polyvinyl alcohol solution; add 0.05 g of poly(vinyl alcohol)-N-methyl -4(4'-formylstyryl)pyridinium methylsulfate acetal was mixed into deionized water with a volume of 1mL, stirred and dissolved to obtain poly(vinyl alcohol)-N-methyl-4(4'-formyl Styryl) pyridinium methylsulfate acetal mixed solution; enzyme (bilirubin oxidase or flavin adenine dinucleotide-dependent glucose dehydrogenase) with phosphate buffer solution or tris (hydroxymethyl) amino Methane buffer solution mixed to obtain 300U·mL -1 or 25U·mL -1 Enzyme solution; 0.7mL polyvinyl alcohol solution, 0.3mL poly(vinyl alcohol)-N-methyl-4(4'-formylstyryl)pyridinium methylsulfate acetal solution and 0.1mL The enzyme solution was mixed and stirred at room temperature to obtain the precursor solution of the porous antifouling interface. A precursor solution with a vo...

Embodiment 2

[0094] Preparation of porous antifouling interface. Add 0.07 g of polyvinyl alcohol into 14 mL of deionized water, stir and dissolve at 85°C to obtain a polyvinyl alcohol solution; add 0.06 g of poly(vinyl alcohol)-N-methyl -4(4'-formylstyryl)pyridinium methylsulfate acetal was mixed into deionized water with a volume of 1.5mL, stirred and dissolved to obtain poly(vinyl alcohol)-N-methyl-4(4'-methyl Acylstyryl)pyridinium methylsulfate acetal mixed solution; enzyme (bilirubin oxidase or flavin adenine dinucleotide-dependent glucose dehydrogenase) with phosphate buffer solution or tris(hydroxymethyl) Aminomethane buffer solution was mixed to obtain 250U·mL -1 or 20U·mL -1 Enzyme solution; mix 0.9mL of polyvinyl alcohol solution, 0.4mL of poly(vinyl alcohol)-N-methyl-4(4'-formylstyryl)pyridinium methylsulfate acetal solution and 0.15mL of The enzyme solution was mixed and stirred at room temperature to obtain the precursor solution of the porous antifouling interface. A precu...

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Abstract

The invention relates to the field of in-vivo energy batteries, in particular to a precursor solution, a porous anti-fouling interface, a battery electrode, a battery and a preparation method. The invention provides a precursor solution, a porous anti-fouling interface, a battery electrode, a battery and a preparation method, so as to solve the problem that the performance of a biological fuel battery is seriously reduced due to the fact that the biological fuel battery is influenced by body fluid after being implanted into a body and the surface of the electrode generates biological pollution and is inactivated. The biological fuel cell is formed by twisting a biological negative electrode and a partially insulated biological positive electrode, and the positive electrode and the negative electrode are respectively composed of carbon nanotube fibers, a mediator for electron transfer regulation and a porous anti-pollution interface. The interface is composed of enzyme, an anti-fouling polymer and a cationic polymer, the anti-fouling polymer is adopted to resist pollution of cells and protein in biological fluid, the cationic polymer enhances fixation of the enzyme on the surface of the electrode, and a porous network structure enables reactants to continuously permeate. And stable and high-performance output can be kept after the biological fuel cell is implanted into a body.

Description

technical field [0001] The invention relates to the field of internal energy batteries, more specifically, to a precursor solution, a porous antifouling interface, a battery electrode, a battery and a preparation method. Background technique [0002] Implantable electronic devices have functions such as real-time health monitoring, disease diagnosis and treatment, human-computer interaction, and human body enhancement. They are expected to promote the industrial revolution in many major strategic fields such as biomedicine, artificial intelligence, and military defense. They are currently the focus of international research. A cutting edge technology. However, in vivo energy supply is a key challenge for the development of this field. Biofuel cells use enzymes as biocatalysts to obtain energy. It can convert the chemical energy in biomass such as glucose in the body into electrical energy, and is expected to continuously obtain energy from organisms and become a long-term ...

Claims

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Application Information

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IPC IPC(8): H01M8/16H01M4/90H01M4/88C12N9/02C12N9/04
CPCH01M8/16H01M4/9008H01M4/8828C12N9/001C12N9/0006C12Y103/03005C12Y101/9901Y02E60/50
Inventor 张晔王列何儿
Owner NANJING UNIV