Preparation method of MXene conductive paper and paper battery

A paper battery, conductive paper technology, applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, non-aqueous electrolyte battery electrodes, etc. The influence of additives on the conductive properties and other issues can achieve the effects of high mechanical strength and chemical stability, improved battery capacity and service life, and uniform conductivity.

Inactive Publication Date: 2022-08-02
苏州北科纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, two-dimensional materials are receiving more and more attention in the research of paper batteries, but the technical solutions of most patent applications are simply mixing nanomaterials and pulp together to make paper motors, or adding electrode active materials, Or add some additives (additives and / or binders), without considering the influence of the mixing effect of nanomaterials and additives on the electrical conductivity of paper batteries, resulting in an insignificant improvement in the electrical conductivity of the electrode and the inability to take advantage of the advantages of nano-conductive materials , in view of this, the present invention is proposed

Method used

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  • Preparation method of MXene conductive paper and paper battery
  • Preparation method of MXene conductive paper and paper battery
  • Preparation method of MXene conductive paper and paper battery

Examples

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Effect test

Embodiment 1

[0027] Preparation of a flexible MXene conductive paper and paper battery

[0028] Dissolve 1 g of LiF in 10 mL of 6 M HCl and mix the solution well. Then, within 30 minutes, 1 gTi 3 AlC 2 The powder is gradually added to the mixed solution to avoid initial overheating. The reaction was continuously stirred at 35°C for 24 hours. The resulting precipitate was washed and centrifuged alternately until the pH of the washing solution was >6. The precipitate was vacuum filtered through a nylon membrane and then naturally dried, and then called multilayer MXene (m-Ti3 C 2 T x ). To delaminate the nanosheets, 0.5 g of m-Ti was 3 C 2 T x The powder was dispersed in 150 mL of deionized water (DI-water). After sonication for 1 h, followed by centrifugation at 3500 rpm for 10 min, a stable colloidal solution was obtained, which was rich in monolayers with few layers of Ti 3 C 2 T x Nanosheets. Ti 3 C 2 T x The colloidal solution was directly vacuum filtered through a poly...

Embodiment 2

[0030] Preparation of a flexible MXene conductive paper and paper battery

[0031] Dissolve 1 g of LiF in 10 mL of 6 M HCl and mix the solution well. Then, within 30 minutes, 1 gTi 3 AlC 2 The powder is gradually added to the mixed solution to avoid initial overheating. The reaction was continuously stirred at 35°C for 24 hours. The resulting precipitate was washed and centrifuged alternately until the pH of the washing solution was >6. The precipitate was vacuum filtered through a nylon membrane and then naturally dried, and then called multilayer MXene (m-Ti 3 C 2 T x ). The prepared m-Ti 3 C 2 T x Disperse 100 mg of the powder into the lining of a hydrothermal kettle of 50 ml of saturated urea solution at 60 °C, and stir magnetically for 3 hours at 60 °C to obtain a uniform mixture. Then, the hydrothermal reactor was reacted at 180°C for 12h. After the reaction was completed, the pH was continuously washed with deionized water until the pH was about 7. Then the r...

Embodiment 3

[0033] Preparation of a flexible MXene conductive paper and paper battery

[0034] Dissolve 1 g of LiF in 10 mL of 6 M HCl and mix the solution well. Then, within 30 minutes, 1 gTi 3 AlC 2 The powder is gradually added to the mixed solution to avoid initial overheating. The reaction was continuously stirred at 35°C for 24 hours. The resulting precipitate was washed and centrifuged alternately until the pH of the washing solution was >6. The precipitate was vacuum filtered through a nylon membrane and then naturally dried, and then called multilayer MXene (m-Ti 3 C 2 T x ). First, the prepared Ti 3 C 2 The powder and thiourea (mass ratio 1:3) were ground and mixed uniformly, then placed in a tube furnace under Ar atmosphere, heated to 500 °C, kept for 3 h, cooled to room temperature, and the prepared material was ground again and used Repeated washing with ionized water until neutral. The obtained powder is dried to obtain N, S co-doped Ti 3 C 2 , denoted as N,S-Ti...

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Abstract

The invention discloses MXene conductive paper and a preparation method of a paper battery, and belongs to the technical field of conductive materials. The MXene conductive paper is Ti3C2Tx conductive paper which is mainly prepared from a nano layered material MXene or a non-metallic element (N and/or S) doped or metallic element doped MXene material without any additive or adhesive and has excellent conductivity and mechanical strength. The independent, soft and tough electrode with high capacity and long service life is crucial for developing the next generation of lithium-sulfur (Li-S) battery.

Description

technical field [0001] The invention belongs to the field of conductive materials, and in particular relates to a preparation method of MXene conductive paper and paper batteries. Background technique [0002] Using well-established paper technology to use conductive paper as current collectors and electrodes provides a low-cost, lightweight and efficient energy storage idea. Paper batteries are mainly based on fiber paper as a carrier, and are coated or printed with ink made of nanomaterials to form batteries or supercapacitors. This paper battery can be cut, bent, environmentally friendly and inexpensive, and its applications involve many electronic products. [0003] Two-dimensional transition metal carbides and / or nitrides (MXenes) have attracted increasing attention due to their high electrical conductivity, abundant surface functional groups, and excellent dispersibility in various solvents, and are widely used in energy storage and conversion applications show a com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/139H01M10/052H01M10/0525H01M10/054H01M10/058H01G11/30C01B32/90
CPCH01M4/13H01M4/139H01M10/052H01M10/0525H01M10/054H01M10/058H01G11/30C01B32/90
Inventor 何青胡慧慧章冬雯
Owner 苏州北科纳米科技有限公司
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