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Preparation method for copper-doped lithium zinc titanate nano particles and application thereof

A technology of lithium zinc titanate and nanoparticles, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as poor lithium intercalation performance, and achieve low cost, easy operation, and improved intercalation. Poor Lithium Performance

Inactive Publication Date: 2016-07-20
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method and application of copper-doped zinc lithium titanate nanoparticle, it is by doping copper to Li 2 ZnTi 3 o 8 After modification, the obtained copper-doped lithium zinc titanate nanoparticles can be used as anode materials for lithium-ion batteries to effectively improve the existing Li 2 ZnTi 3 o 8 The problem of poor lithium intercalation performance of materials

Method used

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  • Preparation method for copper-doped lithium zinc titanate nano particles and application thereof
  • Preparation method for copper-doped lithium zinc titanate nano particles and application thereof
  • Preparation method for copper-doped lithium zinc titanate nano particles and application thereof

Examples

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Embodiment 1

[0020] 1) Dissolve 280mg titanium isopropoxide in 570mg citric acid to obtain titanium citrate solution;

[0021] 2) Control the temperature of the titanium citrate solution to 60°C in a water bath, and then dissolve 25mg of lithium carbonate, 90mg of zinc nitrate hexahydrate and 3mg of copper nitrate trihydrate one by one;

[0022] 3) Add ethanol to the solution obtained in step 2) according to the weight ratio of ethanol to citric acid as 2:3, then raise the temperature of the solution to 80°C, and take it out after reaching the sol state;

[0023] 4) Put the sol obtained in step 3) into a crucible, heat-treat at 350°C for 1 hour, then grind it into a powder state with an agate mortar, put it in a muffle furnace, and calcinate it at 600°C for 3 hours to obtain copper-doped titanium Lithium zinc oxide nanoparticles.

Embodiment 2

[0025] 1) Dissolve 300mg titanium isopropoxide in 600mg citric acid to obtain titanium citrate solution;

[0026] 2) Control the temperature of the titanium citrate solution to 75°C in a water bath, and then dissolve 28mg of lithium carbonate, 110mg of zinc nitrate hexahydrate and 6mg of copper nitrate trihydrate one by one;

[0027] 3) Add ethanol to the solution obtained in step 2) according to the weight ratio of ethanol to citric acid as 2:3, then raise the temperature of the solution to 100°C, and take it out after reaching the sol state;

[0028] 4) Put the sol obtained in step 3) into a crucible, heat-treat at 500°C for 1 hour, then grind it into a powder state with an agate mortar, put it in a muffle furnace, and calcinate it at 800°C for 3 hours to obtain copper-doped titanium Lithium zinc oxide nanoparticles.

Embodiment 3

[0030] 1) Dissolve 290mg titanium isopropoxide in 580mg citric acid to obtain titanium citrate solution;

[0031] 2) Control the temperature of the titanium citrate solution to 70°C in a water bath, and then dissolve 26mg of lithium carbonate, 100mg of zinc nitrate hexahydrate and 4mg of copper nitrate trihydrate one by one;

[0032] 3) Add ethanol to the solution obtained in step 2) according to the weight ratio of ethanol to citric acid as 2:3, then raise the temperature of the solution to 90°C, and take it out after reaching the sol state;

[0033] 4) Put the sol obtained in step 3) into a crucible, heat-treat at 400°C for 1 hour, then grind it into a powder state with an agate mortar, put it in a muffle furnace, and calcinate it at 700°C for 3 hours to obtain copper-doped titanium Lithium zinc oxide nanoparticles.

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Abstract

The invention discloses a preparation method for copper-doped lithium zinc titanate nano particles and an application thereof, and belongs to the technical field of battery materials. The preparation method comprises the following steps: mixing isopropyl titanate with citric acid to generate titanium citrate, adding and dissolving lithium carbonate, zinc nitrate hexahydrate and copper nitrate hydrate, adding ethanol, heating up to a sol state, carrying out a heat treatment in a crucible, grinding and calcining at a high temperature to prepare the copper-doped lithium zinc titanate nano particles, wherein the purity of the copper-doped lithium zinc titanate nano particles can be higher than 90%. The nano particles are prepared into a lithium ion battery cathode material to effectively perfect the problem of poor lithium embedding performance of the existing Li2ZnTi3O8 material, and thus the copper-doped lithium zinc titanate nano particles have a good application prospect.

Description

Technical field [0001] The present invention is the field of battery material technology, which is specifically involved in the preparation method and application of a copper doped zinc -lithium nanoparticle. Background technique [0002] Lithium -ion batteries have significant advantages in high voltage, high capacity, and long cycle life. They are currently widely used in mobile electronic equipment, national defense industry, electric vehicles and other fields.The electrode material is the core part of the lithium ion battery, and it is also a key factor that determines the performance of lithium ion battery.At present, graphite is widely used in commercial lithium -ion batteries.However, graphite lithium batteries are close to metal lithium. In the process of charging and discharge, the surface is prone to lithium branches crystals and causes short circuits of batteries. There is a certain hidden safety hazard. [0003] Titanium group (titanium oxide and titanate compounds) l...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/485H01M4/58H01M4/62H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/364H01M4/485H01M4/5825H01M4/626H01M10/0525Y02E60/10
Inventor 洪振生周凯强真义超黄志高
Owner FUJIAN NORMAL UNIV
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