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Preparation method of graphene-loaded Ni0.85Se composite material and application thereof

A technology of ni0.85se and composite materials, which is applied in the field of preparation of graphene-loaded Ni0.85Se composite materials, can solve problems such as difficult to meet market demand, low energy density and power density, and achieve high stability, high activity and low cost Effect

Inactive Publication Date: 2016-01-27
JIANGNAN GRAPHENE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as negative electrode materials are concerned, the theoretical specific capacity of commercial graphite-based negative electrode materials is only 372mAh / g, and its low energy density and power density are obviously difficult to meet market demand.

Method used

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  • Preparation method of graphene-loaded Ni0.85Se composite material and application thereof
  • Preparation method of graphene-loaded Ni0.85Se composite material and application thereof
  • Preparation method of graphene-loaded Ni0.85Se composite material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) hydrazine hydrate 8mL is mixed with graphene oxide solution, the solvent that described graphene oxide solution adopts is water, and the consumption of corresponding graphene oxide is 550mg, after stirring to form brown solution, add the polytetrafluoroethylene that fills 72mL water Fluorine-lined stainless steel reactor;

[0026] (2) 480mg nickel chloride hexahydrate and 160mg selenium powder are packed into the above-mentioned reaction kettle and fully stirred for 20min;

[0027] (3) Close the reactor and react at 140°C for 24h;

[0028] (4) After the reaction, place it at room temperature for natural cooling, suction filter the mixture in the reactor, and repeatedly wash three times with distilled water and absolute ethanol, and suction filter;

[0029] (5) Finally, the sample was dried under vacuum at 60°C for 12 hours to prepare graphene-loaded Ni 0.85 Se complex

[0030] Material;

[0031] Performance test: loading Ni on the prepared graphene 0.85 Se comp...

Embodiment 2

[0033] (1) Hydrogen iodide 6mL is mixed with graphene oxide solution, the solvent that described graphene oxide solution adopts is methyl alcohol, and the consumption of corresponding graphene oxide is 500mg, after stirring to form brown solution, add the polysaccharide that fills 70mL water PTFE-lined stainless steel reactor;

[0034] (2) 300mg nickel chloride hexahydrate and 100mg selenium powder are packed into the above-mentioned reaction kettle and fully stirred for 10min;

[0035] (3) Close the reaction kettle and react at 160° C. for 12 hours;

[0036] (4) After the reaction, place it at room temperature for natural cooling, suction filter the mixture in the reactor, and repeatedly wash three times with distilled water and absolute ethanol, and suction filter;

[0037] (5) Finally, the sample was dried under vacuum at 60°C for 12 hours to prepare graphene-loaded Ni 0.85 Se composites.

Embodiment 3

[0039] (1) Ascorbic acid 10mL is mixed with graphene oxide solution, the solvent that described graphene oxide solution adopts is ethanol, and the consumption of corresponding graphene oxide is 700mg, after stirring to form brown solution, add the polytetrafluoroethylene that fills 80mL water Lined stainless steel reactor;

[0040] (2) 550mg nickel chloride hexahydrate and 200mg selenium powder are packed into the above-mentioned reaction kettle and fully stirred for 20min;

[0041] (3) Close the reaction kettle and react at 200°C for 36h;

[0042] (4) After the reaction, place it at room temperature for natural cooling, suction filter the mixture in the reactor, and repeatedly wash three times with distilled water and absolute ethanol, and suction filter;

[0043] (5) Finally, the sample was dried under vacuum at 60°C for 12 hours to prepare graphene-loaded Ni 0.85 Se composites.

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Abstract

The invention relates to the technical field of the application of new energy sources and new materials, and discloses a preparation method of a graphene-loaded Ni0.85Se composite material and the application of the composite material as an anode material for a lithium ion battery. The preparation method comprises the following steps: adding nickel chloride hexahydrate and selenium powder in water, adding hydrazine hydrate, stirring, and then adding an oxidized graphene solution, wherein the proportion of the above components is as follows: each 50-100mL water is corresponding to 150-550mg of nickel chloride hexahydrate, 50-200mg of selenium powder, 200-800mg of oxidized graphene solution, and 6-12mL of hydrazine hydrate; and then sufficiently stirring for 5-20min, transferring to a high-pressure reaction kettle, reacting for 12-48 hours at 120-180 DEG C to obtain the graphene-loaded Ni0.85Se composite material. The preparation method is simple, low in reaction temperature, low in cost, green and controllable and suitable for industrial production.

Description

technical field [0001] The present invention relates to a kind of composite material, relate in particular to a kind of graphene loaded Ni 0.85 Preparation method and application of Se composite material. Background technique [0002] With the increasingly prominent energy crisis and environmental problems, lithium-ion batteries, as a new energy storage device for renewable energy, are clean and pollution-free. Lithium-ion batteries have excellent comprehensive properties such as high working voltage, high energy density, long cycle life, light weight, and small self-discharge. They have developed rapidly in recent years and have important roles in civil, transportation, electronics, military, aerospace and other fields. application. However, with the needs of people's lives, especially lithium-ion batteries, as the most potential driving energy for electric vehicles and hybrid vehicles in the future, must have higher energy density, power density and good cycle stability....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/58H01M4/133H01M4/136H01M4/1393H01M4/1397H01M10/0525
CPCH01M4/133H01M4/136H01M4/1393H01M4/1397H01M4/362H01M4/581H01M4/583H01M10/0525H01M2004/027H01M2220/20Y02E60/10
Inventor 李修兵
Owner JIANGNAN GRAPHENE RES INST
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