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A kind of sulfur-rizopus mycelium spherical carbon/metal oxide composite material and its preparation method and application

A composite material, Rhizopus technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of poor conductivity, intermediate product shuttle loss volume change, etc., to achieve improved conductivity, good ion and electron diffusion channels, large Effect of Active Reaction Area

Active Publication Date: 2022-02-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of sulfur-rhizopsis mycelial spherical carbon / metal oxide composite material and its Preparation method and application as cathode material for lithium-sulfur batteries

Method used

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  • A kind of sulfur-rizopus mycelium spherical carbon/metal oxide composite material and its preparation method and application
  • A kind of sulfur-rizopus mycelium spherical carbon/metal oxide composite material and its preparation method and application
  • A kind of sulfur-rizopus mycelium spherical carbon/metal oxide composite material and its preparation method and application

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Experimental program
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Embodiment 1

[0026] Prepare LB solid medium in a 500mL Erlenmeyer flask (recipe: 1g yeast powder, 2g tryptone, 2g sodium chloride, 3g agar powder, 200mL deionized water), sterilize in a high-pressure steam sterilizer for 30min, and distribute to Petri dish (20mL*10), use the inoculation loop to dip a small amount of rhizopus inoculation source (brewing fermented rhizopus powder as the inoculum source of rhizopus, Shandong Changtai Biotechnology Co., Ltd.) to inoculate on the surface of the medium, and then transfer to a constant temperature In a constant humidity chamber, the set temperature is 20°C, the set humidity is 60%, and the culture time is 2 days, and the rhizopus mycelium is obtained after taking it out. Prepare SDB liquid medium (recipe: 20g peptone, 20g glucose, 1L deionized water) in a 2L Erlenmeyer flask, sterilize in an autoclave for 30min, and then cool to room temperature. Dip a small amount of Rhizopus mycelium with an inoculation loop and inoculate it into the liquid med...

Embodiment 2

[0031] Prepare LB solid medium in a 500mL Erlenmeyer flask (recipe: 1g yeast powder, 2g tryptone, 2g sodium chloride, 3g agar powder, 200mL deionized water), sterilize in a high-pressure steam sterilizer for 30min, and distribute to Petri dish (20mL*10), use the inoculation loop to dip a small amount of rhizopus inoculation source (brewing fermented rhizopus powder as the inoculum source of rhizopus, Shandong Changtai Biotechnology Co., Ltd.) to inoculate on the surface of the medium, and then transfer to a constant temperature In a constant humidity chamber, the set temperature is 20°C, the set humidity is 60%, and the culture time is 2 days, and the rhizopus mycelium is obtained after taking it out. Prepare SDB liquid medium (recipe: 20g peptone, 20g glucose, 1L deionized water) in a 2L Erlenmeyer flask, sterilize in an autoclave for 30min, and then cool to room temperature. Dip a small amount of Rhizopus mycelium with an inoculation loop and inoculate it into the liquid med...

Embodiment 3

[0034] Prepare LB solid medium in a 500mL Erlenmeyer flask (recipe: 1g yeast powder, 2g tryptone, 2g sodium chloride, 3g agar powder, 200mL deionized water), sterilize in a high-pressure steam sterilizer for 30min, and distribute to Petri dish (20mL*10), use the inoculation loop to dip a small amount of rhizopus inoculation source (brewing fermented rhizopus powder as the inoculum source of rhizopus, Shandong Changtai Biotechnology Co., Ltd.) to inoculate on the surface of the medium, and then transfer to a constant temperature In a constant humidity chamber, the set temperature is 20°C, the set humidity is 60%, and the culture time is 2 days, and the rhizopus mycelium is obtained after taking it out. Prepare SDB liquid medium (recipe: 20g peptone, 20g glucose, 1L deionized water) in a 2L Erlenmeyer flask, sterilize in an autoclave for 30min, and then cool to room temperature. Dip a small amount of Rhizopus mycelium with an inoculation loop and inoculate it into the liquid med...

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Abstract

The invention discloses a sulfur-rhizopsis mycelium spherical carbon / cobalt oxide composite electrode material and its preparation method and its application as a positive electrode material of a lithium-sulfur battery. The Rhizopus mycelium carbon / cobalt oxide composite was generated. The composite material is used as a host, and reacted for 5-16 hours by a melting sulfurization method to obtain a sulfur-rhizobium hyphae ball carbon / cobalt oxide composite electrode material. The sulfur-rizopus mycelium spherical carbon / cobalt oxide composite electrode material of the present invention is cheap and easy to obtain, can be prepared on a large scale, and has the advantages of high specific capacity, high rate performance and high cycle life, and is widely used in mobile communications, electric vehicles, and smart grids. And aerospace and other fields have broad application prospects.

Description

technical field [0001] The invention relates to the field of positive electrode materials for lithium-sulfur batteries, in particular to a sulfur-rhizopsis mycelium spherical carbon / metal oxide composite material, a preparation method thereof, and an application as a positive electrode material for lithium-sulfur batteries. Background technique [0002] With the increasing demand for energy storage technology in electric vehicles, smart grids, and portable electronic devices, secondary batteries are developing towards high energy density, high power density, miniaturization, and light weight. Lithium-ion batteries based on the intercalation mechanism have the highest energy density among commercial energy storage technologies, but are currently approaching the limit of theoretical energy density. Therefore, novel rechargeable batteries with higher energy density and lower production cost are urgently needed. Among the potential alternatives, lithium-sulfur batteries (LSBs) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/583H01M4/62H01M10/052
CPCH01M4/362H01M4/583H01M4/625H01M4/48H01M10/052Y02E60/10
Inventor 夏新辉黄蕾王秀丽涂江平
Owner ZHEJIANG UNIV
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