Iron nickel sulfide nano material and preparation method and application thereof

A nanomaterial, sulfide technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of low utilization rate of effective charge and discharge active points, large microscopic size of electrode materials, and shortened battery work. life and other problems, to achieve the effects of low raw material price, simple and stable preparation method, and improved electrochemical sodium storage performance

Active Publication Date: 2019-09-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 high current, it will cause serious polarization, which greatly shortens the working life of the battery. See literature [3]

Method used

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  • Iron nickel sulfide nano material and preparation method and application thereof
  • Iron nickel sulfide nano material and preparation method and application thereof
  • Iron nickel sulfide nano material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Take a certain quality of analytically pure ferric ammonium oxalate 2g, methylimidazole 2g, nickel nitrate 2g, urea 2g, mix and grind in a glass mortar to obtain a mixture, and the mixture is denoted as A;

[0027] 2) Add the mixture A into the polytetrafluoroethylene lining, add deionized water, the volume is 20ml, put the lining into the hydrothermal outer kettle, fix and seal it well, put it into the homogeneous reactor, and the reaction temperature range is 100 °C, the reaction time range is 12h, evaporated to dryness and collected to obtain product B;

[0028] 3) Calcining the mixture B in a low-temperature tube furnace at 500°C for 5 hours, taking it out after cooling, and obtaining the product C;

[0029] 4) Mix and grind the product C and 2 times the mass of thioacetamide in a glass mortar to obtain a mixture D;

[0030] 5) Calcining the mixture D in a low-temperature tube furnace at 300°C for 30 minutes, taking it out after cooling, and obtaining the produc...

Embodiment 2

[0033] 1) Take a certain quality of analytically pure ferric ammonium oxalate 2g, methylimidazole 2g, nickel nitrate 2g, and urea 4g, mix and grind in a glass mortar to obtain a mixture, and the mixture is designated as A;

[0034] 2) Add the mixture A into the polytetrafluoroethylene lining, add deionized water, the volume is 30ml, put the lining into the hydrothermal outer kettle, fix and seal it well, put it into the homogeneous reactor, and the reaction temperature range is 150 °C, the reaction time range is 8h, evaporated to dryness and collected to obtain product B;

[0035] 3) Calcining the mixture B in a low-temperature tube furnace at 800°C for 2 hours, taking it out after cooling, and obtaining the product C;

[0036] 4) Mix and grind the product C and 6 times the mass of thioacetamide in a glass mortar to obtain a mixture D;

[0037] 5) Calcining the mixture D in a low-temperature tube furnace at 400°C for 40 minutes, taking it out after cooling, and obtaining the ...

Embodiment 3

[0040] 1) Take a certain quality of analytically pure ferric ammonium oxalate 2g, methylimidazole 2g, nickel nitrate 2g, and urea 7g, and mix and grind them in a glass mortar to obtain a mixture, which is denoted as A;

[0041] 2) Add the mixture A into the polytetrafluoroethylene lining, add deionized water, the volume is 30ml, put the lining into the hydrothermal outer kettle, fix and seal it well, put it into the homogeneous reactor, and the reaction temperature range is 250 °C, the reaction time range is 2h, evaporated to dryness and collected to obtain product B;

[0042] 3) Calcining the mixture B in a low-temperature tube furnace at 1000°C for 1 hour, taking it out after cooling, and obtaining the product C;

[0043] 4) Mix and grind product B and 10 times the mass of thioacetamide in a glass mortar to obtain mixture D;

[0044] 5) Calcining the mixture D in a low-temperature tube furnace at 600°C for 1 hour, taking it out after cooling, and obtaining the product E, na...

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Abstract

The invention discloses an iron nickel sulfide nano material and a preparation method and an application thereof. The preparation method comprises the following steps: 1) ammonium ferric oxalate, nickel nitrate, methyl imidazole and urea are mixed according to a mass ratio of 1:1:1:(1-7) and ground to obtain a mixture A; 2) the mixture A is loaded into a homogeneous reactor for hydrothermal reaction, evaporated and collected to obtain a product B; 3) the product B is thermally treated in a low temperature tube furnace to obtain a product C; 4) the product C is mixed with thioacetamide and ground to obtain a mixture D; 5) the mixture D is thermally treated in the low temperature tube furnace to obtain the iron nickel sulfide nano material. The bimetallic iron nickel sulfide prepared by theinvention produces carbon nanotubes under the action of metal co-catalysis which significantly improve the electrical conductivity of the material in the process of charge and discharge and improve the structural stability of the material, and 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 relates to an iron-nickel sulfide nanometer material and a preparation method and application thereof. Background technique [0002] In recent years, with the rapid development of electronic devices, research on energy storage materials with high energy efficiency, abundant resource reserves and environmental friendliness is a necessary condition for the sustainable development of human society in the future. The market demand is very large, and it is far from enough to measure and evaluate battery materials only by energy density and charge and discharge rate. Whether the manufacturing cost and energy consumption of batteries pollute the environment and the recycling rate of resources will also become important indicators for evaluating battery materials, see literature [1][2]. As an electrode of Na-ion batteries, FeS has a nanoscale structure that can reduce the transport length...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/054B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/362H01M4/5815H01M4/62H01M4/625H01M4/628H01M10/054Y02E60/10
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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