Application of graphdiyne in metal ion batteries and super-capacitors

A technology of supercapacitors and metal ions, applied in battery electrodes, hybrid capacitor electrodes, circuits, etc., can solve the problems of low theoretical capacity and limited application of graphite, and achieve high specific capacity, long rate performance, and excellent electrochemical performance.

Inactive Publication Date: 2014-07-23
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in commercial lithium-ion batteries, cheap graphite is mostly used as negative electrode material, but the low theoretical capacity (372mAh / g) of graphite limits its application in power lithium-ion batteries (Tarascon, J.M.; Armand, M., Nature 2001, 414(6861), 359-367. Manev, V.; Naidenov, I.; Puresheva, B.; Zlatilova, P.; Pistoia, G., J. Power Sources 1995, 55(2), 211-215. )

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  • Application of graphdiyne in metal ion batteries and super-capacitors
  • Application of graphdiyne in metal ion batteries and super-capacitors
  • Application of graphdiyne in metal ion batteries and super-capacitors

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Embodiment Construction

[0023] Below by embodiment, the present invention will be further described.

[0024] 1. The preparation method of graphdiyne film is as follows:

[0025] According to the method reported in the literature (Li, G.; Li, Y.; Liu, H.; Guo, Y.; Li, Y.; Zhu, D., Chem. Commun. 2010, 46, 3256-3258.) Prepare graphyne film, the specific preparation method is as follows:

[0026] Use 100mL of hydrochloric acid with a concentration of 4mol / L (2~6mol / L, 4mol / L is the best) to ultrasonically wash the copper sheet (2×10cm2) for 10 minutes, then ultrasonically wash with water, ethanol and acetone for 10 minutes respectively , and finally blow dry with nitrogen. Put the dried copper sheet into a 250mL three-neck flask loaded with 80mL of anhydrous pyridine, heat it to 120°C under nitrogen protection, keep it for about one hour and then cool it down to 80°C. Dissolve 40mg of hexaynylbenzene with 80mL of pyridine, quickly put it into a nitrogen-protected constant pressure funnel, and drop in...

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Abstract

The invention belongs to the field of metal ion batteries and super-capacitors, and particularly relates to an application of materials of graphdiyne which is an allotrope of carbon in electrode materials of the metal ion batteries and the super-capacitors. Thin-film materials of the graphdiyne which is the allotrope of the carbon are used as negative electrode materials of the metal ion batteries or the super-capacitors. A large-area graphdiyne thin film is formed on the surface of a copper sheet to be used as the negative electrode materials of the metal ion batteries and the super-capacitors, and therefore the metal ion batteries and the super-capacitors obtain excellent electrochemical performance which comprises higher specific capacity, outstanding rate performance and ultralong cycle life. Research results show that graphdiyne is a negative electrode material, with high potential, of lithium ion batteries, and can be used as negative electrode materials of batteries of other metal ions (such as sodium and potassium).

Description

technical field [0001] The invention belongs to the field of metal ion batteries and supercapacitors, and in particular relates to the application of a carbon allotrope graphyne material in electrode materials of metal ion batteries and supercapacitors. Background technique [0002] In recent years, lithium-ion batteries have been widely used in various portable electronic devices and mobile communication fields. With the growth of people's demand for electric vehicles and hybrid vehicles, there is an urgent need to develop some new lithium-ion batteries with high specific capacity, excellent rate performance and long cycle life to meet people's growing needs, and also proposed electrode materials. Higher requirements, especially for negative electrode materials. [0003] At present, in commercial lithium-ion batteries, cheap graphite is mostly used as negative electrode material, but the low theoretical capacity (372mAh / g) of graphite limits its application in power lithiu...

Claims

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Application Information

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IPC IPC(8): H01G11/32H01M4/133H01M4/583
CPCY02E60/10Y02E60/13
Inventor 李玉良黄长水刘辉彪李勇军
Owner INST OF CHEM CHINESE ACAD OF SCI
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