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Preparation method and application of perylene diimide and graphene composite material

A technology of perylene diimide and composite materials, which is applied in the field of preparation of perylene diimide and graphene composite materials, and can solve problems such as low capacity, easy dissolution, and limited applications

Inactive Publication Date: 2017-06-20
SHANGHAI JIAO TONG UNIV
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  • Description
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Problems solved by technology

However, when organic sulfur or organic conjugated polycarbonyl compounds are directly applied to positive electrode materials, their own conductivity is poor and they are easily dissolved into the electrolyte, resulting in a capacity much lower than the theoretical capacity and rapid decay during cycling, which limits their use in positive electrode materials. field application

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  • Preparation method and application of perylene diimide and graphene composite material
  • Preparation method and application of perylene diimide and graphene composite material

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Embodiment Construction

[0022] The following examples of the present invention are described in detail below. The following examples are implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the embodiment.

[0023] In a preferred embodiment of the present invention, the preparation method of the perylene diimide and graphene composite material G-P-300 includes the following steps.

[0024] 1. Synthesis and preparation of PDI

[0025] (1) 25 mmol of perylenetetracarboxylic dianhydride and 240 mmol of N,N-dimethyl-1,2-ethylenediamine were dissolved in 100 mL of DMF, and then reacted at 130° C. for 5 hours under nitrogen protection. After the reaction is completed, cool to room temperature, then add 500mL THF to form a suspension, filter under reduced pressure and wash with THF to remove excess N,N-dimethyl-1,2-et...

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Abstract

The invention belongs to the preparation field of a positive electrode material of a rechargeable battery, and particularly relates to a preparation method and an application of a perylene diimide and graphene oxide composite material. The preparation method for the perylene diimide and graphene oxide composite material comprises the steps of performing synthesizing on perylene-3,4,9,10-tetracarboxylic dianhydride and N, N-dimethyl-1, 2-ethylenediamine to prepare perylene diimide; performing a solvent thermal reaction on graphene oxide and perylene diimide to obtain a composite material precursor; and performing heat treatment on the composite material precursor in a protective gas to obtain the perylene diimide and graphene composite material. The composite material disclosed by the invention can be applied to a lithium ion battery as well as a novel sodium ion battery, so that the application field of the composite material is expanded; compared with solvent thermal compounding, the specific capacity of the composite material can be further improved after heat treatment; and in addition, the cycling process is higher in stability without obvious attenuation.

Description

technical field [0001] The invention belongs to the field of preparation of positive electrode materials for rechargeable batteries, and in particular relates to a preparation method and application of a perylene diimide and graphene composite material. Background technique [0002] In recent years, with the rapid development of portable and wearable electronic devices, people's demand for high-performance energy storage devices is increasing, and the market's demand for the output and energy density of lithium-ion batteries has skyrocketed. Therefore, new low-cost materials are being sought to improve their Capacity has become a hot spot and difficulty. [0003] Among them, lithium-ion battery is currently the most mature secondary battery, which has the advantages of high energy density, no memory effect, high rated voltage, and long cycle life; as a potential substitute, sodium-ion battery not only has the advantages of lithium-ion battery, but also It has advantages suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/60H01M10/0525H01M10/054
CPCH01M4/362H01M4/583H01M4/60H01M10/0525H01M10/054Y02E60/10
Inventor 吴东清黄涛马列鲁登
Owner SHANGHAI JIAO TONG UNIV
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