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Sulfur-mould spore carbon ball/phosphate composite material and preparation method and application thereof

A technology of mold spores and composite materials, applied in electrical components, battery electrodes, non-aqueous electrolyte storage batteries, etc., can solve the problems of easy dissolution and volume change of reaction intermediate products, poor conductivity, accelerated reaction rate, etc., and achieve excellent cycle performance , Improve electrical conductivity, high cycle life effect

Active Publication Date: 2019-01-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a sulfur-mold spore carbon sphere / phosphide composite material and its preparation method and as a lithium-sulfur battery for the poor conductivity of the electrode material of the current lithium-sulfur battery, the easy dissolution of the reaction intermediate product, and the volume change. The application of the positive electrode material of the battery, the composite material has the advantages of high conductivity, inhibition of polysulfide dissolution, ease of volume expansion, acceleration of reaction rate, etc.

Method used

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  • Sulfur-mould spore carbon ball/phosphate composite material and preparation method and application thereof
  • Sulfur-mould spore carbon ball/phosphate composite material and preparation method and application thereof
  • Sulfur-mould spore carbon ball/phosphate composite material and preparation method and application thereof

Examples

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Embodiment 1

[0027] Weigh 500g of rice and cook and cool to room temperature 25°C. The boiled rice is placed in a petri dish, then the inoculation source of 0.1g Aspergillus oryzae (Aspergillus oryzae spore powder as the inoculation source of Aspergillus oryzae, Shandong Changtai Biotechnology Co., Ltd.) is inoculated on its surface, and then transferred to a constant temperature Humidity box, setting temperature is 25 ℃, and setting humidity is 60%, and cultivation time is 10 days, obtains Aspergillus oryzae spore powder 100g after taking out. Weigh 11.88g of nickel chloride hexahydrate and place it in a beaker, add 500ml of deionized water to prepare a 0.1mol / L nickel chloride aqueous solution. Add 100 g of Aspergillus oryzae spore powder into 0.1 mol / L nickel chloride aqueous solution and stir for 45 minutes, then soak for 6 hours, then separate and dry to obtain the mold spore / transition metal nickel chloride composite material. The mold spore / transition metal nickel chloride composit...

Embodiment 2

[0033]Weigh 300g of rice and cook and cool to room temperature 25°C. Cooked rice is placed in the petri dish, then the inoculation source of 0.06g Aspergillus oryzae (aspergillus oryzae spore powder as the inoculation source of aspergillus oryzae, Shandong Changtai Biotechnology Co., Ltd.) is inoculated on its surface, then transferred to a constant temperature Humidity box, setting temperature is 27 ℃, and setting humidity is 65%, and cultivation time is 7 days, obtains Aspergillus oryzae spore powder 60g after taking out. Weigh 7.13g of nickel chloride hexahydrate and place it in a beaker, add 500ml of deionized water to configure a 0.06mol / L nickel chloride aqueous solution. Add 60 g of Aspergillus oryzae spore powder into 0.06 mol / L nickel chloride aqueous solution and stir for 30 minutes, then soak for 12 hours, then separate and dry to obtain the mold spore / transition metal nickel chloride composite material. The mold spore / transition metal chloride composite material w...

Embodiment 3

[0036] Weigh 100g of rice and cook and cool to room temperature 25°C. The boiled rice is placed in a petri dish, then the inoculation source of 0.02g Aspergillus oryzae (aspergillus oryzae spore powder as the inoculation source of aspergillus oryzae, Shandong Changtai Biotechnology Co., Ltd.) is inoculated on its surface, and then transferred to a constant temperature Humidity chamber, setting temperature is 30 ℃, and setting humidity is 70%, and cultivation time is 10 days, obtains Aspergillus oryzae spore powder 20g after taking out. Weigh 2.38g of nickel chloride hexahydrate and place it in a beaker, add 500ml of deionized water to prepare a 0.02mol / L nickel chloride aqueous solution. Add 60 g of Aspergillus oryzae spore powder into 0.02 mol / L nickel chloride aqueous solution and stir for 15 minutes, then soak for 18 hours, then separate and dry to obtain the mold spore / transition metal nickel chloride composite material. The mold spore / transition metal nickel chloride com...

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Abstract

The invention discloses a sulfur-mould spore carbon ball / phosphate composite material and preparation method and application thereof, Mold culture in a soaking method at high temperature is recated toform mold spore carbon ball / transition metal phosphide composite material. Sulfur is as a carrier, a sulfurizing method is used to synthesize elemental sulfur in a mold spore carbon sphere / transition metal phosphide composite by a sulfurizing method for 12 to 18 hours to prepare a sulfur-sulfur spore carbon sphere / transition metal phosphide composite electrode of a lithium-sulfur battery. material.. The sulfur-spore spore carbon ball / transition metal phosphide composite electrode material of the invention has the advantages of flexibility, high specific capacity, high rate performance andhigh cycle life, and has broad fields in the fields of mobile communication, electric vehicles, solar power generation and aerospace. Application prospects. The material has broad application prospects in mobile communications, electric vehicles, solar power generation, aerospace and other fields.

Description

technical field [0001] The invention relates to the field of positive electrode materials for lithium-sulfur batteries, in particular to a sulfur-mold spore carbon sphere / phosphide composite material, a preparation method thereof, and an application as a positive electrode material for lithium-sulfur batteries. Background technique [0002] In the past few decades, with the deterioration of energy and environmental problems, people are constantly looking for and developing renewable clean energy. In recent years, secondary batteries represented by lithium-ion batteries have been dominating the power supply market for modern electronic products due to their enormous energy density, long cycle life, high operating voltage, and charge / discharge efficiency. However, the energy density of the current lithium-ion battery system can only reach 200-250Wh / kg, which cannot meet the growing demand in the fields of large-capacity storage and electric transportation. The development of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/62H01M4/58H01M10/052
CPCH01M4/362H01M4/5805H01M4/583H01M4/625H01M10/052Y02E60/10
Inventor 夏新辉钟宇涂江平王秀丽
Owner ZHEJIANG UNIV
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