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C60 fullerene peracetylated glucose derivative and application of C60 fullerene peracetylated glucose derivative as lithium battery cathode material

A technology of glucose derivatives and fullerene peracetyl, which can be used in the preparation of sugar derivatives, sugar derivatives, and sugar derivatives, etc., can solve the problems of low specific capacity of secondary lithium battery specific energy positive electrode materials, etc.

Inactive Publication Date: 2018-01-19
深圳市聚华太科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limit to the improvement of the specific energy of the secondary lithium battery is still the low specific capacity of the positive electrode material.

Method used

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  • C60 fullerene peracetylated glucose derivative and application of C60 fullerene peracetylated glucose derivative as lithium battery cathode material
  • C60 fullerene peracetylated glucose derivative and application of C60 fullerene peracetylated glucose derivative as lithium battery cathode material
  • C60 fullerene peracetylated glucose derivative and application of C60 fullerene peracetylated glucose derivative as lithium battery cathode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh C60 fullerene (1mmol), formula II compound (1mmol, CAS registration number: 191668-88-9) and dissolve in chlorobenzene (15mL), heat to 75-80°C for 6 hours, continue to heat to reflux After 12 hours of temperature reaction, after concentration under reduced pressure, silica gel column chromatography (stationary phase: 200-300 mesh silica gel, mobile phase: toluene / acetone = 10:1-10:2) gave a light brown solid (536 mg, yield About 48%), namely the compound of formula I, by mass spectrometry (ESI-MS (m / z): 1116.1 [M+H] + ), X-ray powder diffraction (XRPD) ( figure 1 ), infrared ( figure 2 ) and other parameters.

Embodiment 2

[0019] Weigh C60 fullerene (2mmol), formula II compound (1mmol, CAS registration number: 191668-88-9) and dissolve in DMF (20mL), heat to 75-80°C for 10 hours, continue to heat to reflux temperature After reacting for 8 hours and concentrating under reduced pressure, silica gel column chromatography (stationary phase: 200-300 mesh silica gel, mobile phase: toluene / acetone=10:1-10:2) gave a light brown solid (569 mg, yield approx. 51%), which is the compound of formula I, and the structural characterization data is consistent with that of Example 1.

Embodiment 3

[0021] A simulated battery was assembled with the compound of formula I of the present invention as the positive electrode active material and metal lithium, and the electrochemical performance test was carried out.

[0022] The present invention adopts the coating method to prepare the composite pole piece, mixes the compound of formula I, the conductive agent acetylene black, and the adhesive PEO according to the mass ratio of 60%, 30%, and 10%, and grinds them uniformly, then mixes them with a mixed solvent of water and n-propanol (volume ratio 1:4) into a paste, spread evenly on the current collector, dry at room temperature for 24 hours, cut into 1×1cm 2 The pole pieces were vacuum-dried at 60°C for 8 hours for later use.

[0023] The simulated battery adopts a two-electrode system. The composite pole piece prepared by the above method is used as the positive electrode, and the lithium foil is used as the negative electrode. 1MLi CF 3 SO 3 The dioxolane + diglyme + ethy...

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Abstract

The invention relates to a C60 fullerene peracetylated glucose derivative and application of the C60 fullerene peracetylated glucose derivative as a lithium battery cathode material. The C60 fullereneglucosinolates derivative has a structure shown in formula I as shown in the specification. The C60 fullerene peracetylated glucose derivative which has the structure shown in formula I can be usedas an active substance to prepare the lithium battery cathode material, and the first discharge capacity of the cathode material can reach 763 mAh / g.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a C60 fullerene fully acetylated glucose derivative and its application as a lithium battery positive electrode material. Background technique [0002] With the rapid development of my country's economy, the demand for new battery materials continues to increase. As the future development direction of batteries, lithium batteries have a promising development prospect in the cathode material market. However, the limitation of the specific energy of the secondary lithium battery is still the low specific capacity of the positive electrode material. Therefore, there is an urgent need to develop a material with high specific capacity for the positive electrode of lithium batteries. [0003] Due to the strong electron-accepting ability of fullerene molecules and the bending characteristics of the carbon atom structure in the molecule, fullerene and its derivatives have a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H19/04C07H1/00H01M4/60H01M10/052
CPCY02E60/10
Inventor 郑超李慧张宏
Owner 深圳市聚华太科技有限公司
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