A kind of nano lithium/sodium ion battery electrode material with bubble paper structure and preparation method thereof

A sodium ion battery and electrode material technology, applied in battery electrodes, structural parts, secondary batteries, etc., can solve the problems of unsatisfactory battery performance and poor appearance, achieve good buffering effect, improve stability, and prolong cycle life Effect

Inactive Publication Date: 2019-03-19
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve technical problems such as poor morphology of existing nano-lithium / sodium-ion battery electrode materials and unsatisfactory battery performance, the invention provides a preparation of a nano-lithium / sodium-ion battery electrode material with a bubble paper structure method, the prepared nano-lithium / sodium ion battery electrode material with the carbon skeleton of the bubble paper structure has a buffering effect on volume expansion / shrinkage, so that the electrode material with a large volume change during charge and discharge has a long cycle life, high specific capacity

Method used

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  • A kind of nano lithium/sodium ion battery electrode material with bubble paper structure and preparation method thereof
  • A kind of nano lithium/sodium ion battery electrode material with bubble paper structure and preparation method thereof
  • A kind of nano lithium/sodium ion battery electrode material with bubble paper structure and preparation method thereof

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Embodiment 1

[0089] Bubble Wrap Structure Sn

[0090] 0.384g K 2 SnO 3 ·3H 2 O and 0.48g urea were dissolved in 80mL deionized water-absolute ethanol mixed solution (volume ratio 5:3), and the solution obtained by mixing was stirred with a magnetic stirring device for 30min and then transferred to a Teflon-lined hydrothermal kettle. And insulated at 190°C for 10h in a blast drying oven, centrifuged the solution obtained after the reaction to obtain a white powder and dried at 60°C for 12h to obtain SnO 2 Precursor. Take the obtained SnO after drying 2 Dissolve 0.1g of the precursor in a mixed solution of 40mL deionized water and ethanol (volume ratio 3:1), add 0.2g glucose to the solution and ultrasonicate for 20 minutes, stir for 1h, then transfer the solution to 50mL Teflon Lined hydrothermal kettle, and kept in a blast drying oven at 190°C for 10h, and obtained brown powder by centrifugation. To form a carbon film, after drying, 0.2 g of the above brown powder was dissolved with 0...

Embodiment 2

[0108] 0.392g (NH 4 ) 2 MoO 4 Dissolve 0.48g urea in 80mL deionized water-absolute ethanol mixed solution (volume ratio 5:3), stir the mixed solution for 30min with a magnetic stirring device, transfer it to a Teflon-lined hydrothermal kettle, and Insulate at 190° C. for 10 h in a blast drying oven, centrifuge the solution obtained after the reaction to obtain a white powder, and dry at 60° C. for 12 h. Take the obtained MoO after drying 2 Dissolve 0.1g of the precursor in a mixed solution of 40mL deionized water and ethanol (volume ratio 3:1), add 0.2g glucose to the solution and sonicate for 20 minutes, stir for 1h, then transfer the solution to 50mL Teflon Lined hydrothermal kettle, and kept in a blast drying oven at 190°C for 10h, and obtained brown powder by centrifugation. To form a carbon film, after drying, 0.2 g of the above brown powder was dissolved with 0.1 g of glucose and 6.7 g of sodium chloride in 50 mL of deionized water and sonicated for 30 min. The resu...

Embodiment 3

[0111] 0.464g GeCl 4 ·H 2 O and 0.56g urea were dissolved in 80mL deionized water-absolute ethanol mixed solution (volume ratio 5: 3), and the mixed solution was stirred with a magnetic stirring device for 30min and then transferred to a Teflon-lined hydrothermal kettle. And keep it warm at 190° C. for 10 h in a forced air drying oven, centrifuge the solution obtained after the reaction to obtain a white powder, and dry at 60° C. for 12 h. GeO obtained after drying 2 Dissolve 0.1g of the precursor in a mixed solution of 40mL deionized water and ethanol (volume ratio 3:1), add 0.2g glucose to the solution and ultrasonicate for 20 minutes, stir for 1h, then transfer the solution to 50mL Teflon Lined hydrothermal kettle, and kept in a blast drying oven at 190°C for 10h, and obtained brown powder by centrifugation. To form a carbon film, after drying, 0.2 g of the above brown powder was dissolved with 0.1 g of glucose and 6.7 g of sodium chloride in 50 mL of deionized water and...

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Abstract

The invention discloses a nano lithium and sodium ion battery electrode material with bubble wrap structure and a preparation method thereof. The preparation method comprises the steps: (1), subjecting electrode material raw materials and a surfactant to hydrothermal reaction in an organic solvent solution, separating solid and liquid, and drying to obtain an energy storage material precursor; (2), dispersing the energy storage material precursor and an organic carbon source in the organic solvent solution for hydrothermal reaction, separating solid and liquid, and drying; (3), dispersing a dried product of step (2), an organic carbon source and a template in a solution, heating and dehydrating, annealing in a mixed atmosphere of a reducing gas and an inertial gas, and removing the template to obtain the nano lithium and sodium ion battery electrode material. The invention also comprises the nano lithium and sodium ion battery electrode material prepared by using the preparation method. The electrode material has bubble wrap structure and has good electrical properties.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries with high specific capacity and high cycle stability, and specifically refers to a preparation method of a nano energy storage material with a bubble paper structure and the electrochemical application of the material as a lithium / sodium ion electrode material. Background technique [0002] With the rapid development of economy and society in the 21st century and the continuous improvement of industrial level, traditional fossil energy sources such as coal and oil are facing the situation of exhaustion. At the same time, the widespread use of traditional fossil energy has caused unprecedented environmental pollution. In order to achieve sustainable development, all kinds of renewable and clean energy have become the focus of vigorous development by countries all over the world. However, renewable energy generally has the disadvantages of large total amount, low energy density, and unsatisfact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M10/0525
CPCH01M4/366H01M10/0525Y02E60/10
Inventor 刘军李斯特王子明杨林钰
Owner CENT SOUTH UNIV
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