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Preparation method of sno2-al negative electrode material

A negative electrode material, sno2-al technology, applied in battery electrodes, electrical components, circuits, etc., to achieve high intercalation/delithiation ability and high electrochemical capacity

Inactive Publication Date: 2016-06-08
成都兴能新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional carbon-based anode materials can no longer meet the needs of the next generation of new lithium-ion battery anode materials in terms of specific capacity and specific energy. Therefore, it is of great significance to develop new non-carbon-based anode materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of SnO 2 -The preparation method of Al negative electrode material, comprises the following steps:

[0015] (1) SnCl 2 ?2H 2 O was dissolved in absolute ethanol to obtain a solution A with a Sn ion concentration of 5 mmol / L;

[0016] (2) AlCl 3 Dissolved in deionized water to obtain a solution B with an Al ion concentration of 5 mmol / L;

[0017] (3) Mix solution A and solution B, adjust to pH = 8 with ammonia water, and heat under stirring until the solution becomes gelatinous, at this time, mixture A is obtained;

[0018] (4) The mixture A was sintered at 150°C for 20h (sintering was carried out under an air atmosphere), cooled and then ground to obtain the SnO 2 -Al negative electrode material.

Embodiment 2

[0020] A kind of SnO 2 -The preparation method of Al negative electrode material, comprises the following steps:

[0021] (1) SnCl 2 ?2H 2 O was dissolved in absolute ethanol to obtain a solution A with a Sn ion concentration of 5 mmol / L;

[0022] (2) AlCl 3 Dissolved in deionized water to obtain a solution B with an Al ion concentration of 5 mmol / L;

[0023] (3) Mix solution A and solution B, adjust the pH to 10 with ammonia water, and heat under stirring until the solution becomes gelatinous, at this time, mixture A is obtained;

[0024] (4) The mixture A was sintered at 200°C for 10 (sintering was carried out under an air atmosphere), cooled and then ground to obtain the SnO 2 -Al negative electrode material.

Embodiment 3

[0026] A kind of SnO 2 -The preparation method of Al negative electrode material, comprises the following steps:

[0027] (1) SnCl 2 ?2H 2 O was dissolved in absolute ethanol to obtain a solution A with a Sn ion concentration of 5 mmol / L;

[0028] (2) AlCl 3 Dissolved in deionized water to obtain a solution B with an Al ion concentration of 5 mmol / L;

[0029] (3) Mix solution A and solution B, adjust to pH = 9 with ammonia water, and heat under stirring until the solution becomes gelatinous, and then mixture A is obtained;

[0030] (4) The mixture A was sintered at 180°C for 15h (sintering was carried out under a nitrogen atmosphere), cooled and then ground to obtain the SnO 2 -Al negative electrode material.

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PUM

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Abstract

The invention provides a preparation method of a SnO2-Al cathode material, which belongs to the chemical cell preparation field. The provided method can prepare a tin-based aluminum composite oxide with high purity and small granularity, the composite oxide has high de-lithium-intercalation ability, has high electrochemistry capacity, and can be widely used in the Li<+> cell cathode material.

Description

technical field [0001] The invention belongs to the field of chemical battery preparation, in particular to a SnO 2 -The preparation method of Al negative electrode material. Background technique [0002] The current commercial anode material is mainly graphite, whose actual capacity is close to the theoretical value (372mAh / g), which cannot meet the requirements of high-performance and high-capacity lithium-ion batteries, especially thin-film lithium-ion micro-batteries with high energy density. On the other hand, the lithium intercalation potential of graphite-like carbon materials is mainly concentrated in the range of 100-0mV (vs. Li / Li+), which is very close to the deposition potential of metal lithium, which is not conducive to the safety of the battery. [0003] With the widespread popularization and development of various small portable electronic products and electric bicycles, the commercial development of a new generation of electric vehicles (EV) and hybrid elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/485
CPCH01M4/463H01M4/483Y02E60/10
Inventor 王维利范未峰
Owner 成都兴能新材料股份有限公司