Graphene/quinones composite material, preparation method and secondary cell

A composite material and secondary aluminum battery technology, applied in secondary batteries, battery electrodes, circuits, etc., can solve the problems of poor electrical conductivity, achieve high electrical conductivity, increase utilization, and improve charge and discharge performance

Inactive Publication Date: 2014-12-03
NANJING ZHONGCHU NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using it as a positive electrode active material can avoid the problem of sulfur positive ele

Method used

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  • Graphene/quinones composite material, preparation method and secondary cell
  • Graphene/quinones composite material, preparation method and secondary cell
  • Graphene/quinones composite material, preparation method and secondary cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1) Pre-oxidation of graphite: Add 3g of graphite powder into 200mL of concentrated sulfuric acid, stir for 0.5h; then add 1g of phosphorus pentoxide and 3g of potassium persulfate to the above sulfuric acid solution of graphite powder, adjust the reaction temperature to 80 ℃, reacted for 6 hours, washed with ultrapure water until neutral after the reaction, and then dried in a blast drying oven at 40 ℃ for later use.

[0050]2) Preparation of graphene oxide: add pre-oxidized graphite into 150mL concentrated sulfuric acid, ultrasonically, stir and disperse for 0.5h; add 14g potassium permanganate, control the temperature below 10°C, and react for 1h; then transfer the reaction solution to 35 ℃ in a constant temperature water bath, stir for 5 hours, then transfer it to an ice-water bath, add 300mL ultrapure water to dilute, and control the temperature below 55℃; when the temperature of the reaction solution drops to room temperature, add 3mL of 30% Hydrogen peroxide, when...

Embodiment 2

[0055] Preparation of graphene / anthraquinone composite material: graphene and anthraquinone were mixed at a mass ratio of 3:7, added to a ball mill, ball milled at a speed of 250r / min for 5h, and the ball milled product was collected for later use.

[0056] The battery preparation and testing methods are the same as in Example 1.

[0057] The open circuit voltage of the battery is 1.78V, the maximum discharge capacity is 534mAh, and the discharge capacity after 50 charge-discharge cycles is 359mAh.

Embodiment 3

[0059] Preparation of graphene / naphthoquinone composite material: Graphene and naphthoquinone were mixed at a mass ratio of 3:7, added to a ball mill, ball milled at a speed of 250r / min for 8 hours, and the milled product was collected for later use.

[0060] The battery preparation and testing methods are the same as in Example 1.

[0061] The open circuit voltage of the battery is 1.78V, the highest discharge capacity is 558mAh, and the discharge capacity after 50 charge-discharge cycles is 362mAh.

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Abstract

The invention discloses a positive electrode material of a secondary aluminum cell, a preparation method of the positive electrode material, and the secondary aluminum cell comprising a positive electrode. The secondary aluminum cell comprises a positive electrode, an aluminum-containing negative electrode and non-aqueous aluminium-containing electrolyte. Specifically, the positive electrode material is a graphene/quinones composite material, and quinones are formed by quinone and any one of corresponding derivatives; the negative electrode is formed by metallic aluminum or aluminium alloy.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry and new energy products, and relates to a graphene / quinone compound composite material and a preparation method thereof, as well as the application of the composite material in secondary aluminum batteries. Background technique [0002] With the rapid development of new power sources such as electronic and communication equipment, electric vehicles, wind power generation and photovoltaic power generation, human beings have higher and higher requirements for battery performance of supporting power sources, and there is an urgent need to develop batteries with high energy, low cost, long life, and green , Power batteries and energy storage batteries that are rich in battery material resources and recyclable. The theoretical specific capacity of metal aluminum is second only to lithium, but its volume specific capacity is four times that of lithium, higher than any other metal material, so s...

Claims

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Application Information

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IPC IPC(8): H01M4/133H01M4/137H01M4/1393H01M4/1399
CPCH01M4/364H01M4/583H01M4/60H01M10/054Y02E60/10
Inventor 赵宇光钟毓娟
Owner NANJING ZHONGCHU NEW ENERGY
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