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A carbon nanomaterial and its application in sodium ion battery

A technology of carbon nanomaterials and nanowalls, applied in battery electrodes, nanotechnology, nanotechnology, etc., can solve problems such as difficulties in the preparation of graphyne, and achieve excellent electrochemical performance, excellent rate performance, and high specific capacity.

Inactive Publication Date: 2018-12-11
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the difficulty in the preparation of low-defect graphyne and the agglomeration and stacking of graphene-like sheets of graphyne, the performance of graphyne for sodium ion energy storage devices has been further improved.

Method used

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  • A carbon nanomaterial and its application in sodium ion battery
  • A carbon nanomaterial and its application in sodium ion battery
  • A carbon nanomaterial and its application in sodium ion battery

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Embodiment 1

[0036] The copper foil (3×10 cm, 10 pieces) was ultrasonically washed with hydrochloric acid with a concentration of 1 mol / L for 10 minutes, then ultrasonically washed with water, ethanol and acetone for 10 minutes each, and then dried with argon. Place the dried copper sheet in a mixture of 80 mL of acetone, anhydrous pyridine, and tetramethylethylenediamine (the volume ratio of acetone, anhydrous pyridine, and tetramethylethylenediamine is preferably 100:5:1) 100mL three-neck flask, and replace the gas in the bottle with argon atmosphere. Dissolve 36mg of hexaynylbenzene monomer with 20mL of acetone and inject it into the argon-protected constant pressure funnel through a syringe, and drop it into the three-neck flask containing the mixed solvent and copper sheet that has been kept at 50°C (preferably 50°C) In the middle, the dripping was completed within 2 hours; the system was kept at 50°C for 12 hours. After the reaction, take out the copper sheet, wash the copper sheet ...

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Abstract

The invention discloses a preparation method of graphite alkyne carbon nano electrode material applied in sodium ion energy storage device, which improves capacity storage, large current charging anddischarging and long cycle performance of sodium ion battery by introducing an alkyne bond connected by a benzene ring and a nano pore structure into the carbon nano material. Graphene nanostructureswith special nanowires, nano-walls, nanoclusters or nanospheres were synthesized by optimizing the morphology and material quality of the matrix in the mixed solvent containing nitrogen ligands. The nanometer graphite alkyne prepared by the method has the characteristics of simple and controllable preparation process, stable material structure, and the like, can be directly applied to sodium ion energy storage devices, has high sodium storage specific capacity and good cycle life, and has broad application prospects in the field of sodium ion energy storage batteries.

Description

technical field [0001] The invention relates to the field of new electrochemical energy sources, in particular to the preparation of a novel carbon nanometer electrode material and its application in sodium ion energy storage devices. Background technique [0002] Lithium-ion batteries and lithium-ion capacitors based on the intercalation and extraction mechanism of lithium ions in carbon materials are highly commercialized secondary energy systems. In the future, large-scale applications will be limited to a certain extent by the crustal content and cost of lithium elements. The abundance of sodium element is nearly 4-5 orders of magnitude higher than that of lithium, and the cost of its metal element and compound is much lower than that of lithium metal and lithium salt. With the society's increasing demand for low-cost large-scale energy storage devices, the development of secondary energy storage systems based on sodium ions is a very reasonable and promising choice. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/583B82Y30/00H01M10/054H01G11/36
CPCB82Y30/00H01G11/36H01M4/583H01M10/054Y02E60/10
Inventor 黄长水王坤王宁杨泽
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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