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Secondary aluminum battery and preparation of anode active material thereof

A positive electrode active material and secondary aluminum battery technology, applied in the direction of secondary batteries, electrode manufacturing, battery electrodes, etc., can solve the problems of high capacity density, capacity fading, and low sulfur content of organic sulfides, etc. Achieve good environmental benefits, strong electrical conductivity, and high energy density

Inactive Publication Date: 2010-03-03
无锡欧力达新能源电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disulfide bond breakage and polymerization reactions in the system during charge and discharge, and the small molecular compounds formed by the breakage are easily dissolved into the electrolyte, causing capacity decay, and the dissolved matter may diffuse to the negative electrode, resulting in self-discharge; moreover, the The system failed to reflect the advantages of the high capacity density of organic sulfides; Skotheim et al. (US Pat.5690702, US Pat.5601947, US Pat.5529860) described polycarbosulfides, the capacity of these organic sulfides is relatively low, Because the S-S bond content in the material is too low, and the sulfur content may not be low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Using carbon-sulfur composite material (mass ratio 1:3) as the positive electrode material, add the conductive agent SUPER-P and the binder PVDF at a ratio of 7:2:1 to make a positive electrode active material slurry coated on a 0.6mm thick foam On the nickel substrate, dry and roll to 0.3mm and cut into 40mm wide × 150mm long pole piece, and 0.16mm thick glass fiber non-woven separator and aluminum sheet as the negative electrode active material are wound into electric cores. Put it into a nickel-plated steel case, add an organic electrolyte, and seal it to make an AA-shaped cylindrical secondary aluminum battery. During the battery charge and discharge cycle test, charge at 0.5C, discharge at 1C, and discharge cut-off voltage is 1.2V. The charge and discharge data are listed in Table 1.

Embodiment 2

[0026] The sulfurized polyacetylene material prepared with polyacetylene:S mass ratio = 1:1 was used as the positive electrode, and the remaining preparation steps of the positive electrode were the same as in Example 1.

[0027] The method for preparing the negative electrode is the same as in Example 1, and the assembly of the battery is the same as in Example 1. During the battery charge and discharge cycle test, charge at 0.5C, discharge at 1C, and discharge cut-off voltage is 1.2V. The charge and discharge data are listed in Table 1.

Embodiment 3

[0029] The sulfurized polyacetylene material prepared with a polyacetylene:S mass ratio of 1:2 was used as the positive electrode, and the remaining preparation steps of the battery were the same as in Example 1. During the battery charge and discharge cycle test, charge at 0.5C, discharge at 1C, and discharge cut-off voltage is 1.2V. The charge and discharge data are listed in Table 1.

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Abstract

The invention discloses a novel and high-powered secondary aluminum battery, aiming at providing the secondary aluminum battery with higher irreversible capacity and better cycle performance, broad source, rich resource, simple process, low cost, high product purity and no pollution on the environment. A preparation method of the battery and a preparation method of an anode active material vulcanized polyacetylene are also disclosed. The preparation method of the anode active material vulcanized polyacetylene is characterized in that firstly, hydrogen halide in molecules is removed under the action of alkaline by hydrogen-containing poly-halogeno olefin to obtain polyacetylene, and then the obtained polyacetylene is heated and reacted with simple substance sulphur to obtain vulcanized polyacetylene. In the invention, polysulfide materials are utilized for a secondary aluminum battery system for the first time, the modified and combined secondary aluminum battery can be applied to multiple situations, such as mobile phones, notebooks, portable electronic devices and other mobile power supply situations, and the fields of electro-mobiles, hybrid electro-mobiles and the like, therebyhaving good development and application prospects.

Description

technical field [0001] The invention relates to a method for preparing a novel, high-energy secondary aluminum battery and a method for preparing a positive electrode active material. More specifically, it relates to a method for preparing positive active material sulfurized polyacetylene, a novel high-energy secondary aluminum battery using the positive active material sulfurized polyacetylene, and a preparation method for the secondary aluminum battery. Background technique [0002] With people's thirst for high energy density power supply, there is an urgent need to develop the application of cheap, safe, environmentally friendly and high-performance secondary batteries. A secondary aluminum-sulfur battery that uses aluminum and its alloys as the negative electrode material and chalcogenide materials as the positive electrode is one of the batteries that meet the above requirements. Aluminum and sulfur materials are safe, environmentally friendly, cheap and rich in resou...

Claims

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Application Information

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IPC IPC(8): H01M4/04H01M4/60H01M10/00
CPCY02E60/12Y02E60/10
Inventor 赵宇光黄兆丰
Owner 无锡欧力达新能源电力科技有限公司
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