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Basic iron oxide/graphene negative electrode material and preparation method and application thereof

A graphene negative electrode and iron oxide technology, which is applied in the fields of materials science and electrochemistry, can solve the problems of unfavorable organic matter adsorption and decomposition, and achieve the effects of excellent electrical properties, high concentration, and high specific surface area

Pending Publication Date: 2020-11-13
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the applicant found that basic iron oxide also has shortcomings. First, because the final product is rod-shaped nano-basic iron oxide, its size is relatively small, and the rod-shaped appearance makes it easier to agglomerate, which is extremely unlikely. It is beneficial to use it for the adsorption and decomposition of organic matter

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  • Basic iron oxide/graphene negative electrode material and preparation method and application thereof
  • Basic iron oxide/graphene negative electrode material and preparation method and application thereof
  • Basic iron oxide/graphene negative electrode material and preparation method and application thereof

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Effect test

Embodiment 1

[0035] Preparation of basic iron oxide\graphene negative electrode material:

[0036] (1) Graphene aqueous solution is replaced by Graphene ethanol solution 50ml, wherein the mass concentration containing graphene is 8.46mg / ml, and gets Graphene ethanol solution 40ml;

[0037] (2) ferric chloride hexahydrate (FeCl 3 ·6H 2 O) added to the above-mentioned graphene oxide ethanol solution, magnetically stirred until dissolved;

[0038] (3) ammonium bicarbonate (NH 4 HCO 3 ) was added to the above solution with magnetic stirring until dissolved, wherein, ferric chloride hexahydrate (FeCl 3 ·6H 2 O), ammonium bicarbonate (NH 4 HCO 3 ) and graphene in a mass ratio of 6:5:7.

[0039] (4) The above solution was subjected to magnetic stirring reaction, and the holding time was 8 hours;

[0040] (5) The material obtained by the reaction is repeatedly washed with deionized water, centrifuged, and finally vacuum-dried to obtain the basic iron oxide\graphene negative electrode mate...

Embodiment 2

[0043] Preparation of basic iron oxide\graphene negative electrode material:

[0044] (1) Graphene aqueous solution is replaced by Graphene ethanol solution 50ml, wherein the mass concentration containing graphene is 6mg / ml, and gets Graphene ethanol solution 40ml;

[0045] (2) ferric chloride hexahydrate (FeCl 3 ·6H 2 O) added to the above-mentioned graphene oxide ethanol solution, magnetically stirred until dissolved;

[0046] (3) ammonium bicarbonate (NH 4 HCO 3 ) was added to the above solution with magnetic stirring until dissolved, wherein, ferric chloride hexahydrate (FeCl 3 ·6H 2 O), ammonium bicarbonate (NH 4 HCO 3 ) and graphene in a mass ratio of 6:5:5.

[0047] (4) The above solution was subjected to magnetic stirring reaction, and the holding time was 8 hours;

[0048] (5) The material obtained by the reaction is repeatedly washed with deionized water, centrifuged, and finally vacuum-dried to obtain the basic iron oxide\graphene negative electrode materia...

Embodiment 3

[0050] Preparation of basic iron oxide\graphene negative electrode material:

[0051] (1) Graphene aqueous solution is replaced by Graphene ethanol solution 50ml, wherein the mass concentration containing graphene is 12mg / ml, and gets Graphene ethanol solution 40ml;

[0052] (2) ferric chloride hexahydrate (FeCl 3 ·6H 2 O) added to the above-mentioned graphene oxide ethanol solution, magnetically stirred until dissolved;

[0053] (3) ammonium bicarbonate (NH 4 HCO 3 ) was added to the above solution with magnetic stirring until dissolved, wherein, ferric chloride hexahydrate (FeCl 3 ·6H 2 O), ammonium bicarbonate (NH 4 HCO 3 ) and graphene in a mass ratio of 6:5:10.

[0054] (4) The above solution was subjected to magnetic stirring reaction, and the holding time was 8 hours;

[0055] (5) The material obtained by the reaction is repeatedly washed with deionized water, centrifuged, and finally vacuum-dried to obtain the basic iron oxide\graphene negative electrode mater...

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Abstract

The invention relates to a basic iron oxide / graphene negative electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: providing a graphene ethanol solution; adding ferric chloride hexahydrate into the graphene ethanol solution, and conducting stirring until the ferric chloride hexahydrate is dissolved; adding ammonium bicarbonate, and conducting stirring until dissolving; and carrying out stirring and reacting at room temperature, and then carrying out washing with deionized water, centrifuging and drying on a material obtained by the reaction to obtain the basic iron oxide / graphene negative electrode material. Compared with the prior art, the preparation method has the advantages of easily available raw materials, low cost, mild preparation conditions, short reaction time, environmental protection and sustainability, the capacity of the obtained negative electrode material can reach 600 mAh.G<-1> under a charging and discharging current of 100mA.G<-1>, and the negative electrode material has high reversible capacity, good cycling stability and good electrical properties.

Description

technical field [0001] The invention belongs to the field of material science and electrochemical technology, and specifically relates to a basic iron oxide\graphene negative electrode material and its preparation method and application. Background technique [0002] With the development and progress of the automobile industry, the sustainable development of human beings is facing great challenges. The combustion of non-renewable fuels releases various exhaust gases that cause various problems. Therefore, it is particularly important to seek renewable and sustainable resource energy storage devices. Moreover, rechargeable batteries are economical, environmentally friendly, have high power, and long life. Compared with non-renewable energy sources, rechargeable batteries realize the sustainable utilization of energy. Among them, the lithium-ion battery combines high energy and power, making it the technology of choice for portable electronics, power tools and all-electric v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/02C01G49/00C01B32/194H01M4/52H01M4/62H01M10/0525
CPCC01G49/02C01G49/00C01B32/194H01M4/523H01M4/625H01M10/0525C01P2004/80C01P2004/03C01P2006/40Y02E60/10
Inventor 韩生孔玥黄燕山马健常宾李原婷蒋继波薛原蔺华林
Owner SHANGHAI INST OF TECH