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A lithium carbon dioxide battery pole piece without a binder and without a conductive agent and its preparation method

A battery pole piece, binder-free technology, applied in non-aqueous electrolyte battery electrodes, battery electrodes, circuits, etc., can solve the problems of application limitation, increase the complexity of the process, increase the production cost, etc., to shorten the process flow, reduce Human and material cost, low cost effect

Active Publication Date: 2021-05-04
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the research and development of lithium carbon dioxide batteries, slurry coating is generally used for the production of pole pieces, and additional materials such as binders and conductive agents are used, which not only increases the complexity of the process but also increases the production cost.
Colleagues, because the pole piece made in this way cannot guarantee the rapid diffusion of carbon dioxide, its application in lithium carbon dioxide batteries is also limited to a certain extent.

Method used

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  • A lithium carbon dioxide battery pole piece without a binder and without a conductive agent and its preparation method
  • A lithium carbon dioxide battery pole piece without a binder and without a conductive agent and its preparation method

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preparation example Construction

[0030] This embodiment proposes a method for preparing a lithium carbon dioxide battery pole piece without a binder and without a conductive agent, including the following steps:

[0031] S1, place the nickel foam that has removed the surface oxide layer in the copper salt solution, and then clean and dry;

[0032] S2. Place the dried nickel foam in a mixed solution for hydrothermal reaction, then take it out, wash it, and dry it to obtain a battery pole piece precursor;

[0033] The mixed solution contains copper ions, nickel ions and urea;

[0034] S3. Place the battery pole piece precursor in a 2- react in the solution, and then take it out, wash it, and dry it to obtain a battery pole piece.

[0035] In this embodiment, the concentration of copper ions in the copper salt solution is 0.002 mol / L˜0.2 mol / L; the copper salt solution includes one of copper nitrate, copper sulfate and copper chloride.

[0036] In this embodiment, the concentration of copper ions in the mixed...

Embodiment 1

[0049] S1. Add 0.232 g of copper nitrate trihydrate into 120 ml of deionized water, and stir evenly to obtain a copper nitrate solution. Soak 2*12*0.1cm of nickel foam from which the surface oxide layer has been removed in copper nitrate solution for 0.5 min, so that copper nitrate and nickel foam undergo an alloy reaction to form a nickel-copper alloy on the surface of nickel foam.

[0050] Take out the soaked nickel foam, wash it in an ultrasonic cleaner filled with ultrapure water for 5 minutes, and then place it in a vacuum oven at 60°C until it is completely dry.

[0051] S2. Add 0.232g of copper nitrate trihydrate and 0.14g of nickel nitrate hexahydrate into 120ml of deionized water, stir evenly, then add 0.086g of urea, stir evenly to obtain a mixed solution.

[0052] The nickel foam dried in step S1 and the mixed solution were placed together in a 200 mL stainless steel reactor for hydrothermal reaction.

[0053] Preferably, the reactor is placed in a thermostat at 12...

Embodiment 2

[0059] S1. Add 0.3 g of copper nitrate trihydrate into 120 ml of deionized water, and stir evenly to obtain a copper nitrate solution. Soak 2*12*0.1cm of nickel foam from which the surface oxide layer has been removed in copper nitrate solution for 3 minutes, so that copper nitrate and nickel foam undergo an alloy reaction to form a nickel-copper alloy on the surface of nickel foam.

[0060] Take out the soaked nickel foam, wash it in an ultrasonic cleaner filled with ultrapure water for 5 minutes, and then place it in a vacuum oven at 60°C until it is completely dry.

[0061] S2. Add 0.3 g of copper nitrate trihydrate and 0.14 g of nickel nitrate hexahydrate into 120 ml of deionized water, stir evenly, then add 0.2 g of urea, stir evenly to obtain a mixed solution.

[0062] The nickel foam dried in step S1 and the mixed solution were placed together in a 200 mL stainless steel reactor for hydrothermal reaction.

[0063] Preferably, the reactor is placed in a thermostat at 10...

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Abstract

The invention belongs to the technical field of new energy, and in particular relates to a lithium carbon dioxide battery pole piece without a binder and without a conductive agent and a preparation method thereof. The method comprises the following steps: S1, placing the nickel foam from which the surface oxide layer has been removed in a copper salt solution, and then cleaning and drying; S2, placing the dried nickel foam in a mixed solution for hydrothermal reaction, and then taking out Cleaning and drying to obtain the battery pole piece precursor; the mixed solution contains copper ions and nickel ions, and a homogeneous precipitant is added; S3, placing the battery pole piece precursor in a 2‑ react in the solution, and then take it out, wash it, and dry it to obtain a battery pole piece. The method does not need to use a binder and a conductive agent, and has a simple manufacturing process and low cost, while ensuring effective diffusion of carbon dioxide gas.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a lithium carbon dioxide battery pole piece without a binder and without a conductive agent and a preparation method thereof. Background technique [0002] Carbon dioxide is one of the main culprits of the greenhouse effect. How to reduce carbon dioxide emissions and utilize carbon dioxide resources is one of the world's urgent issues. Carbon capture and storage technology (CCS) and the resulting carbon capture, storage and utilization Technology (CCUS) has become a research hotspot. [0003] As one of the application forms of CCUS, lithium-carbon dioxide batteries have also attracted extensive attention in recent years. Due to the redox reaction of carbon dioxide and lithium: 4Li+3CO 2 ←→2Li 2 CO 3 +C, so this kind of battery realizes the energy utilization of carbon dioxide to a certain extent and alleviates the environmental problems caused by carbon dioxide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/13H01M4/133H01M4/139H01M4/1393
CPCH01M4/13H01M4/133H01M4/139H01M4/1393Y02E60/10
Inventor 杜涛周立峰刘丽影卢怀宇曲燕萍曹磊
Owner NORTHEASTERN UNIV LIAONING
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