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High-throughput rapid preparation method of three-dimensional flexible composite positive electrode material for seawater dissolved oxygen battery

A composite positive electrode material, three-dimensional flexible technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of low discharge efficiency, long-term discharge, large volume, etc., and achieve uniform distribution, easy operation, and high energy density. Effect

Inactive Publication Date: 2019-10-25
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical task of the present invention is to provide a high-throughput and rapid preparation method for a three-dimensional flexible composite positive electrode material for a seawater dissolved oxygen battery in view of the shortcomings of the existing seawater dissolved oxygen battery, such as large volume, low discharge efficiency, and inability to discharge for a long time

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  • High-throughput rapid preparation method of three-dimensional flexible composite positive electrode material for seawater dissolved oxygen battery
  • High-throughput rapid preparation method of three-dimensional flexible composite positive electrode material for seawater dissolved oxygen battery
  • High-throughput rapid preparation method of three-dimensional flexible composite positive electrode material for seawater dissolved oxygen battery

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preparation example Construction

[0044] A high-throughput rapid preparation method of a three-dimensional flexible composite positive electrode material for a seawater dissolved oxygen battery of the present invention, the preparation process includes the following steps:

[0045] In this method, the carbon fiber is first cut and processed to form a three-dimensional spiral carbon fiber structure;

[0046] Then the three-dimensional helical carbon fiber structure is subjected to high-temperature heat treatment and ultrasonic treatment. The purpose of high-temperature heat treatment is to remove surface impurities and improve the activity of the material. The purpose of ultrasonic treatment is to ensure that the carbon fiber filaments are evenly dispersed;

[0047]Then, the high-throughput electrochemical etching and stripping method is used to modify the three-dimensional helical carbon fiber structure to obtain a layered structure with a rough surface to ensure the rough stripped state of the carbon fiber fil...

Embodiment 1

[0050] A high-throughput rapid preparation method of a three-dimensional flexible composite cathode material for a seawater dissolved oxygen battery according to the present invention, the specific steps of the preparation process include the following:

[0051] 1. Three-dimensional spiral carbon fiber structure cutting and processing

[0052] Cut the carbon fiber with a specification of 12k into a carbon fiber strip with a length of 3 cm, fix it evenly between two tight titanium alloy wires, and use a wire twister to rotate and twist the wire at a constant speed to obtain a carbon fiber strip with a diameter of about 3 cm and a handle length of 10 cm. Three-dimensional helical carbon fiber structure with a column height of 5 cm, see attached figure 1 .

[0053] 2. High temperature heat treatment of three-dimensional spiral carbon fiber structure

[0054] The processed carbon fiber structure was placed in a muffle furnace for high-temperature heat treatment. The temperature ...

Embodiment 2

[0061] A high-throughput rapid preparation method of a three-dimensional flexible composite cathode material for a seawater dissolved oxygen battery according to the present invention, the specific steps of the preparation process include the following:

[0062] 1. Three-dimensional spiral carbon fiber structure cutting and processing

[0063] Cut the carbon fiber with a specification of 12k into a carbon fiber strip with a length of 5 cm, and evenly fix it in the middle of two tight titanium alloy wires. Use a wire twister to rotate and twist the wire at a constant speed to obtain a carbon fiber column with a diameter of about 5 cm and a handle length of 15 cm. Three-dimensional helical carbon fiber structure with a height of 10 cm, see attached figure 1 .

[0064] 2. High temperature heat treatment of three-dimensional spiral carbon fiber structure

[0065] Place the processed carbon fiber structure in a muffle furnace for high-temperature heat treatment. The temperature r...

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Abstract

The invention provides a high-throughput rapid preparation method of a three-dimensional flexible composite positive electrode material for a seawater dissolved oxygen battery, and the method comprises the following steps: cutting and processing carbon fibers to prepare a three-dimensional spiral carbon fiber structure; then carrying out high-temperature heat treatment and ultrasonic treatment onthe three-dimensional spiral carbon fiber structure; carrying out modification treatment on the three-dimensional spiral carbon fiber structure by adopting a high-throughput electrochemical etching stripping method to obtain a layered structure with a rough surface; and finally, depositing noble metal on the surface of the three-dimensional spiral carbon fiber structure by adopting a high-flux scanning electrodeposition method to obtain a uniformly distributed three-dimensional flexible carbon fiber-noble metal nanoparticle composite positive electrode material. The three-dimensional flexiblecomposite nano material for the seawater dissolved oxygen battery is moderate in price, large in specific surface area, high in oxygen reduction catalytic activity and good in stability, can remarkably improve energy output and long-term stable operation of the seawater dissolved oxygen battery, and lays a foundation for research and practical application of the seawater dissolved oxygen battery,a fuel cell, a supercapacitor and the like.

Description

technical field [0001] The invention relates to a high-throughput rapid preparation method of a three-dimensional flexible composite cathode material for a seawater dissolved oxygen battery, which belongs to the field of nanomaterial science and technology and energy application, and is specifically a three-dimensional flexible carbon fiber-noble metal composite oxygen reduction catalyst nanomaterial. Background technique [0002] The seawater dissolved oxygen battery is a new type of high specific energy metal-air fuel cell that uses seawater as the electrolyte, the negative pole is active metal materials (such as magnesium alloy, aluminum alloy, etc.), and the positive pole is the dissolved oxygen reduction electrode. It has the characteristics of moderate price, safety and stability, long storage life, good low temperature performance, high specific energy and specific power, no need to carry electrolyte, etc., and can discharge stably for a long period underwater, so it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92
CPCH01M4/88H01M4/8817H01M4/8853H01M4/921H01M4/926Y02E60/50
Inventor 段体岗马力张海兵辛永磊邢少华孙明先
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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