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Graphene/indium phosphide composite electrode material and preparation method thereof

A composite electrode and graphene technology, applied in battery electrodes, nanotechnology for materials and surface science, circuits, etc., can solve problems such as the composite method of indium phosphide and graphene that have not been reported yet, and achieve improved electrical performance, The effect of accelerated conductivity

Inactive Publication Date: 2017-03-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are only reports on the compounding of indium phosphide and carbon materials, and there is no report on the compounding method of indium phosphide and graphene.

Method used

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  • Graphene/indium phosphide composite electrode material and preparation method thereof
  • Graphene/indium phosphide composite electrode material and preparation method thereof

Examples

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preparation example Construction

[0025] A preparation method of graphene / indium phosphide composite electrode material, comprising the following steps:

[0026] 1) Add 20-30mL distilled water and 2-12mL alkaline solution (such as ethylenediamine or triethylenetetramine) into the Erlenmeyer flask, then add 2.5-10mg graphene oxide, and disperse evenly by ultrasonic;

[0027] 2) Add not more than 1 mmol of cetyltrimethylammonium bromide (CTAB) into the Erlenmeyer flask, stir and sonicate until completely dissolved.

[0028] 3) Add 0.25-0.75mmol indium salt into the Erlenmeyer flask, (can be selected from indium chloride, indium sulfate, indium nitrate, etc.), stir and sonicate until completely dissolved.

[0029] 4) Transfer the solution obtained in step 3) into a polytetrafluoroethylene lining, then add 0.2 to 0.6 g of white phosphorus into the reaction kettle, then seal the polytetrafluoroethylene lining into a stainless steel mold, Start heating at room temperature and heat the reaction at 120-180°C for 8-16...

Embodiment 1

[0035] A preparation method of reduced graphene oxide / indium phosphide composite nanomaterial, comprising the following steps:

[0036] 1) Add 24mL of distilled water and 8mL of ethylenediamine into the Erlenmeyer flask, then add 5mg of graphene oxide, and ultrasonically disperse evenly;

[0037] 2) Add 0.5 mmol cetyltrimethylammonium bromide (CTAB) into the Erlenmeyer flask, stir and sonicate until completely dissolved.

[0038] 3) Add 0.5 mmol of indium chloride into the Erlenmeyer flask, stir and sonicate until completely dissolved.

[0039] 4) Transfer the solution obtained in step 3) into the polytetrafluoroethylene lining, then add 0.4g white phosphorus in the reactor, then seal the polytetrafluoroethylene lining into a stainless steel mold, and start from room temperature under airtight conditions Heating and heating reaction at 180°C for 12h;

[0040] 5) After the reaction is completed, cool to room temperature with the furnace, and then filter with rapid quantitativ...

Embodiment 2

[0045] Change the cetyltrimethylammonium bromide CTAB consumption of step 2) in embodiment 1 to 0mmol, other conditions remain unchanged, find that the graphene surface is smooth in the product, and indium phosphide and graphene are composited poorly.

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Abstract

The invention discloses a graphene / indium phosphide composite electrode material and a preparation method thereof. Indium phosphide particles are uniformly dispersed on the surface of graphene. The preparation method comprises carrying out ultrasonic treatment on a graphene oxide solution through a hexadecyl trimethyl ammonium bromide cationic surfactant, adding an indium salt and white phosphorus into the mixed solution, carrying out hydrothermal treatment for 8-16h, and drying the product in vacuum at a temperature of 50-60 DEG C for 4h to obtain the graphene / indium phosphide composite electrode material. The preparation method is simple and safe and the prepared composite material has good electrical properties.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of lithium ion battery electrode material preparation, in particular to a graphene / indium phosphide composite electrode material and a preparation method thereof. [0003] 【Background technique】 [0004] Lithium-ion batteries are widely used in portable electronic devices due to their high energy density, long cycle life and no memory effect. In recent years, the development of electric equipment has put forward higher requirements for the power density and energy density of lithium-ion batteries, and electrode materials are the decisive factors for the performance improvement of lithium-ion batteries. However, the current commercial lithium-ion battery anode material graphite has a low theoretical capacity, which limits the improvement of the electrochemical performance of lithium-ion batteries. Therefore, the design and preparation of high-performance lithium-ion battery anode materials is a key fa...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/0525B82Y30/00
CPCB82Y30/00H01M4/364H01M4/5805H01M4/625H01M4/628H01M10/0525Y02E60/10
Inventor 刘淑玲何晓东仝建波程芳玲
Owner SHAANXI UNIV OF SCI & TECH
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