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A kind of CO9S8 embedded C60 crystal type composite hydrogen storage material and its preparation method and application

A hydrogen storage material, C60 technology, applied in the field of composite hydrogen storage materials and its preparation, can solve the problems of poor hydrogen storage effect, achieve high safety, simple preparation process, and excellent electrochemical hydrogen storage performance

Active Publication Date: 2018-07-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve pure C 60 and organic functional groups or metal-modified C 60 The technical problem of poor hydrogen storage effect, while providing a Co 9 S 8 embedded C 60 Crystal type composite hydrogen storage material and its preparation method and application

Method used

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  • A kind of CO9S8 embedded C60 crystal type composite hydrogen storage material and its preparation method and application
  • A kind of CO9S8 embedded C60 crystal type composite hydrogen storage material and its preparation method and application
  • A kind of CO9S8 embedded C60 crystal type composite hydrogen storage material and its preparation method and application

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Experimental program
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specific Embodiment approach 1

[0022] Specific implementation mode one: the Co of this embodiment mode 9 S 8 embedded C 60 The crystalline composite hydrogen storage material is Co 9 S 8 Particle Discrete Embedding C 60 crystal plate, where C 60 with Co 9 S 8 The molar ratio is 1:(2~3), where C 60 with Co 9 S 8 The molar ratio is 1:(2~3).

specific Embodiment approach 2

[0023] Embodiment 2: Preparation of the Co described in Embodiment 1 9 S 8 embedded C 60 The method for crystal type composite hydrogen storage material is carried out according to the following steps:

[0024] 1. Put C 60 Powder and sulfur powder are mixed according to the molar ratio of 1: (2~3) to obtain mixed powder I;

[0025] 2. Press ZrO 2 The mass ratio of the grinding ball to the mixed powder I is (15-20): 1, and the ZrO 2 Grinding balls and mixed powder Ⅰ loaded with ZrO 2 Fill the lined ball milling tank with high-purity argon, and finally fix the ball milling tank in the ball mill, and mill it for 4-6 hours at the speed of the ball mill at 850-900rpm. After the ball milling is completed and the ball milling tank is cooled to room temperature, the Sulfur / C 60 Composite powder;

[0026] 3. According to cobalt powder and sulfur / C 60 The molar ratio of sulfur in the composite powder is 1: (0.9~1.1) the cobalt powder and sulfur / C 60 Composite powders are mixed...

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment differs from Embodiment 2 in that the high-purity argon described in steps 2 and 4 refers to argon with a mass percentage concentration greater than 99.999%. Others are the same as in the second embodiment.

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Abstract

The invention discloses a Co9S8 embedded type C60-crystal type composite hydrogen storage material and a preparation method and application thereof and relates to composite hydrogen storages and preparation methods and application thereof with an aim to solve the technical problem that hydrogen cannot be effectively stored in pure C60, organic compounds or metal-modified C60. The composite hydrogen storage material is characterized in that Co9S8 particles are embedded in a C60 crystal slice in a discrete manner, wherein the mole ratio of the C60 to the Co9S8 is 1: (2-3). The preparation method includes: mixing C60 powder with powdered sulfur to obtain sulfur / C60 composite powder by high-energy ball milling; mixing the sulfur / C60 composite powder with cobalt powder prior to high-energy ball milling to obtain the Co9S8 embedded type C60-crystal type composite hydrogen storage material. The largest hydrogen storage capacity can reach 3.11wt%, and batteries prepared by the Co9S8 embedded type C60-crystal type composite hydrogen storage material are characterized in that hydrogen storage capacity can still be kept above 80% after circulation of 20 times. Under 1000mA / g of discharge current density, the discharge capacity can still be kept above 75%, and the Co9S8 embedded type C60-crystal type composite hydrogen storage material can be applied to the field of hydrogen storage.

Description

technical field [0001] The invention relates to a composite hydrogen storage material and its preparation method and application, in particular to C 60 Surface modification and its functionalization method. Background technique [0002] Fullerenes, carbon nanotubes, and other carbon nanomaterials are widely used as hydrogen storage materials due to their light weight and large surface-to-volume ratio. where C 60 Due to its huge theoretical hydrogen storage capacity, it is regarded as a potential hydrogen storage medium, but experiments have proved that due to the C 60 The bonding strength between the surface and hydrogen molecules is too weak, making it difficult to form carbon-hydrogen bonds, and pure C 60 Hydrogen cannot be efficiently stored. A possible way to improve the binding strength is to modify C with some appropriate functional groups 60 Surfaces, such as organic functional groups and metal atoms. "Ca 32 C 60 Hydrogen Storage Research on Clusters" studied ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/58H01M10/34
CPCH01M4/362H01M4/5815H01M4/583H01M10/345Y02E60/10
Inventor 秦伟韩璐高鹏
Owner HARBIN INST OF TECH