Secondary aluminum cell with positive electrode made of double-cladding carbon-sulfur composite material

A secondary aluminum battery and composite material technology, applied in the direction of secondary batteries, battery electrodes, non-aqueous electrolyte storage batteries, etc., can solve the problems of low sulfur content, the effect of improving the overall capacity of the battery is not obvious, and restrict the use range of batteries, etc. Achieve large capacity, improve battery cycle performance, and slow down the loss of sulfur

Inactive Publication Date: 2014-10-01
NANJING ZHONGCHU NEW ENERGY
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the research on positive electrode materials for aluminum-sulfur batteries, before 2005, it was mainly concentrated in the field of polyorganosulfide materials, but because the active temperature of polyorganosulfide materials was mostly above 50°C, the application range o

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example one

[0049] The carbon nanotube-sulfur-graphene composite material was prepared according to the mass ratio of carbon nanotubes, elemental sulfur, and graphene at a mass ratio of 1:7:2.

[0050] Step 1. Preparation of carbon nanotube-sulfur composite material

[0051] The carbon nanotubes and elemental sulfur were mixed at a mass ratio of 1:7 and ball milled for 5 hours; under the protection of inert gas, the ball milled carbon nanotubes and sulfur mixture were heated at a constant temperature of 155°C for 3 hours, and then cooled to obtain a carbon nanotube-sulfur composite material.

[0052] Step 2. Preparation of carbon nanotube-sulfur-graphene oxide mixture

[0053] According to the ratio of carbon nanotube-sulfur composite material to graphene oxide mass ratio of 4:1, the carbon nanotube-sulfur composite material was added to the graphene oxide solution (0.3g / ml), stirred for 4 hours, and ultrasonically dispersed for 1 hour to obtain mixture.

[0054] Step 3. Prepa...

Example Embodiment

[0056] Example two

[0057] The carbon nanotube-sulfur-graphene composite material was prepared according to the mass ratio of carbon nanotubes, elemental sulfur, and graphene at a mass ratio of 1:8:1, and the others were the same as in Example 1.

Example Embodiment

[0058] Example three

[0059] The carbon nanotube-sulfur-graphene composite material was prepared according to the mass ratio of carbon nanotubes, elemental sulfur, and graphene at a mass ratio of 2:7:1, and the others were the same as in Example 1.

[0060] The carbon nanotube-sulfur-graphene composite prepared in Examples 1, 2, and 3, the conductive agent acetylene black, and the binder PVDF were mixed according to the ratio (7:2:1) to form an active material slurry and coated on 0.6mm On a thick nickel foam substrate, dried and rolled to 0.33 mm and cut into a pole piece of 40mm wide x 15mm long, a 0.16mm thick glass fiber non-woven separator and a negative electrode made of aluminum sheet as the negative electrode active material are wound into The electric core is put into a nickel-plated steel shell, and then injected with aluminum chloride-triethylamine hydrochloride ionic liquid electrolyte, and sealed to make an AA secondary aluminum battery.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a secondary aluminum cell with a positive electrode made of a double-cladding carbon-sulfur composite material. The secondary aluminum cell comprises the positive electrode, a negative electrode and electrolyte, wherein the active material of the positive electrode is a carbon nano tube-sulfur-graphene composite material, the active material of the negative electrode is a metal aluminum or aluminum alloy, and the electrolyte is non-aqueous aluminiferous electrolyte.

Description

technical field [0001] The invention belongs to the field of electrochemical and new energy products, and relates to a secondary aluminum battery, in particular to a secondary aluminum battery using a positive electrode of "carbon nanotube-sulfur-graphene composite material". Background technique [0002] Compared with existing electrode materials, aluminum, the metal element with the largest reserves in the earth's crust, has the advantages of high theoretical density, abundant resources, low price, environmental friendliness, and safe use. The theoretical energy density of metal aluminum is as high as 2980mAh / g, second only to metal lithium (3682mAh / g), and the volume specific capacity is 8050mAh / cm 3 , about lithium (2040mAh / cm 3 ), and its chemical activity is relatively stable, it is an ideal negative electrode material; elemental sulfur also has a large theoretical energy density (1670mAh / g), which is the positive electrode material with the highest known energy densi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M10/05H01M4/62H01M4/13
CPCY02E60/122H01M4/366H01M4/38H01M4/625H01M10/054Y02E60/10
Inventor 赵宇光骆建洲
Owner NANJING ZHONGCHU NEW ENERGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap