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A kind of fes nanomaterial based on carbon cloth directional growth and its preparation method and application

A technology of nanomaterials and directional growth, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, and can solve the problems of low utilization of active points for effective charge and discharge, large microscopic size of electrode materials, and obstacles to electrochemistry. Sodium storage capacity and other issues, to achieve the effect of improving conductivity and structural stability, improving electrochemical sodium storage performance, and high capacity

Active Publication Date: 2021-02-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the lack of high electrical conductivity, poor interfacial compatibility with organic electrolytes, large microscopic size of electrode materials, and low utilization of active sites for effective charge and discharge greatly hinder its ability to electrochemically store sodium.
At the same time, due to the high resistivity of FeS, the voltage drops rapidly during discharge, especially when the battery is discharged with a large current, it will cause serious polarization, which greatly shortens the working life of the battery.

Method used

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  • A kind of fes nanomaterial based on carbon cloth directional growth and its preparation method and application
  • A kind of fes nanomaterial based on carbon cloth directional growth and its preparation method and application
  • A kind of fes nanomaterial based on carbon cloth directional growth and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Take a certain quality of analytically pure ferric ammonium oxalate 2g, urea 4g, mix and grind in a glass mortar to obtain a mixture, and the mixture is denoted as A;

[0031] 2) Take a carbon cloth with a size of about 3cm×6cm and soak it in 25g NH 3 h 2 PO 4 1200ml of water, using the anodic oxidation method, the carbon cloth is treated with electricity at a voltage of 5V for 2 minutes, and then taken out for use;

[0032] 3) Mix mixture A and polyacrylamide at a mass ratio of 3:1, add deionized water, the volume is 20ml, stir for 15min, put the treated carbon cloth into the polytetrafluoroethylene lining, and make the mixture solution Completely immerse the carbon cloth;

[0033] 4) Put the inner liner into the hydrothermal outer kettle, fix and seal it well, and put it into the homogeneous reactor, the reaction temperature range is 250°C, and the reaction time range is 12h;

[0034] 5) After the reaction is over, take out the carbon cloth and put it in a vacu...

Embodiment 2

[0038] 1) Take a certain quality of analytically pure ferric citrate 2g, urea 6g, mix and grind in a glass mortar to obtain a mixture, and the mixture is denoted as A;

[0039] 2) Take a carbon cloth with a size of about 3cm×6cm and soak it in 25g NH 3 h 2 PO 4 1200ml of water, using the anodic oxidation method, the carbon cloth is treated with electricity at a voltage of 5V for 2 minutes, and then taken out for use;

[0040] 3) Mix mixture A and polyacrylamide at a mass ratio of 3:1, add deionized water to a volume of 50ml, stir for 15 minutes and put the treated carbon cloth into the polytetrafluoroethylene lining to make the mixture solution Completely immerse the carbon cloth;

[0041] 4) Put the inner liner into the hydrothermal outer kettle, fix and seal it well, and put it into the homogeneous reactor, the reaction temperature range is 150°C, and the reaction time range is 6h;

[0042] 5) After the reaction is over, take out the carbon cloth and put it in a vacuum o...

Embodiment 3

[0046] 1) Take a certain quality of analytically pure ferric ammonium oxalate 1g, urea 7g, mix and grind in a glass mortar to obtain a mixture, and the mixture is denoted as A;

[0047] 2) Take a carbon cloth with a size of about 3cm×6cm and soak it in 25g NH 3 h 2 PO 41200ml of water, using the anodic oxidation method, the carbon cloth is treated with electricity at a voltage of 5V for 2 minutes, and then taken out for use;

[0048] 3) Mix mixture A and polyacrylamide at a mass ratio of 3:1, add deionized water to a volume of 30ml, stir for 15 minutes and put the treated carbon cloth into the polytetrafluoroethylene lining to make the mixture solution Completely immerse the carbon cloth;

[0049] 4) Put the inner liner into the hydrothermal outer kettle, fix and seal it well, and put it into the homogeneous reactor, the reaction temperature range is 250°C, and the reaction time range is 2h;

[0050] 5) After the reaction is over, take out the carbon cloth and put it in a ...

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Abstract

The invention discloses a FeS nanomaterial based on directional growth of carbon cloth and its preparation method and application. The steps of the preparation method are: 1) taking analytically pure organic acid iron salt and urea according to a mass ratio of 1:(1-7) Mixing and grinding to obtain mixture A; 2) activating the carbon cloth for use; 3) mixing mixture A and polyacrylamide in a mass ratio of 3:1 and putting them into carbon hydrothermal reaction; 5) drying after the reaction; 6 ) put the dried carbon cloth and excess thiourea into a porcelain boat and calcinate at high temperature to obtain FeS nanomaterials based on carbon cloth directional growth; the prepared FeS nanomaterials based on carbon cloth dense growth, combined with the high capacity of iron sulfide materials, It has the advantages of easy synthesis, low preparation cost, strong electrical conductivity of carbon cloth, fixed fine grains, and strong adsorption capacity. It has extremely high sodium ion storage performance, high charge and discharge capacity and good rate performance.

Description

technical field [0001] The invention belongs to the field of composite material synthesis, and in particular relates to a FeS nanometer material based on carbon cloth directional growth and its preparation method and application. Background technique [0002] Due to the wide distribution and abundant reserves of sodium in the earth, in recent years, the research and development of room temperature sodium-ion charge-discharge batteries has been considered as a substitute for lithium-ion batteries in large-scale energy storage, especially in the fields of smart grids, to effectively solve the problem of lithium-ion batteries. An effective approach to the problem of low mineral reserves and high cost of lithium sources. Among the many anode material systems for sodium-ion batteries, carbon, metal oxides or sulfides, and alloy materials such as Sn and Sb are the most concerned types of material systems by scholars. Among them, metal sulfides are potential negative electrode mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/342C01B32/354C01G49/12H01M4/58H01M10/054B82Y30/00
CPCB82Y30/00C01G49/12C01P2002/72C01P2004/03C01P2006/40C01B32/342C01B32/354H01M4/5815H01M10/054Y02E60/10
Inventor 曹丽云王蓉黄剑锋李嘉胤许占位郭鹏辉郭玲罗晓敏
Owner SHAANXI UNIV OF SCI & TECH
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