Yeast cell-based Ni-Co-S loaded porous carbon material as well as preparation method and application thereof

A technology of porous carbon materials and yeast cells, applied in the field of supercapacitors, can solve the problem that yeast cells are not resistant to metal salt solution, etc., and achieve the effect of improving capacitance performance, excellent capacitance performance and sustainable development performance.

Inactive Publication Date: 2020-03-31
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] 2. After the yeast cells are carbonized, they are compounded with the metal salt solution. This method can solve the problem that the yeast cells are not resistant to the metal salt solution;

Method used

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  • Yeast cell-based Ni-Co-S loaded porous carbon material as well as preparation method and application thereof
  • Yeast cell-based Ni-Co-S loaded porous carbon material as well as preparation method and application thereof
  • Yeast cell-based Ni-Co-S loaded porous carbon material as well as preparation method and application thereof

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Embodiment 1

[0046] A method for preparing a supercapacitor material based on a yeast cell-loaded Ni-Co-S porous carbon material, comprising the following steps:

[0047] Step 1) Preparation of yeast cell porous carbon, prepare 0.024g / mL glucose solution, add yeast powder, incubate in a water bath at 37°C for 30min to pretreat yeast cells, wash and dry to obtain pretreated yeast cells, and then use Disperse the pretreated yeast cells with a concentration of 0.017g / mL in 3% glutaraldehyde aqueous solution and sonicate for 10min to disperse the yeast cells evenly, then conduct a hydrothermal reaction at 180°C for 5h. Washing, drying, and finally calcining at a temperature of 300°C for 2 hours in an air atmosphere, and then calcining at a temperature of 800°C for 2 hours under a nitrogen atmosphere, the yeast cell porous carbon can be obtained;

[0048] Step 2) The yeast cell porous carbon adsorbs cobalt and nickel metal ions, and weighs 0.5g of the yeast cell porous carbon obtained in step 1...

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Abstract

The invention discloses a Ni-Co-S loaded porous carbon material based on yeast cells. The preparation method comprises the following steps: preparing carbonized yeast cell porous carbon, carrying outhydrothermal reaction on the carbonized yeast cell porous carbon, cobalt nitrate, nickel nitrate and urea, and oxidizing and vulcanizing to obtain the material, the obtained material is of a core-shell structure, and cobalt and nickel elements are uniformly loaded on the surface of the yeast cell porous carbon in the form of NiCo2S4; wherein the shell-core structure is formed by carbonizing ellipsoidal single-cell fungal yeast, and carbonized yeast cells are of a hollow carbon sphere structure. The preparation method comprises the following steps: 1) preparing yeast cell porous carbon; 2) adsorbing cobalt-nickel metal ions by yeast cell porous carbon; and 3) vulcanizing the yeast cell porous carbon adsorbing the cobalt-nickel metal ions. When the material is used as a supercapacitor, the material is charged and discharged in a range of-0.2 to 0.5, and when the discharge current density is 1 A / g, the specific capacitance is 700 to 800 F / g. The invention has the following advantages: noharm is caused to human body; and the tolerance problem of the yeast cell metal salt solution is solved.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a yeast cell-loaded Ni-Co-S porous carbon material used for supercapacitor research. Background technique [0002] With the surge in demand for advanced electric vehicles and large-scale energy systems, energy storage / conversion and its impact on the environment have become two of the most important topics in recent years. In this regard, new and sustainable energy storage / conversion technologies are required to meet the rapidly growing global energy demand. However, clean and sustainable energy technologies, which are closely related to renewable resources, face several challenges. These challenges, such as low reliability and high cost, hinder their commercial application. However, supercapacitors are considered to be a more promising energy conversion device due to their advantages of high power, long cycle time, and low maintenance cost. [0003] For supercapacitor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/34H01G11/44H01G11/42H01G11/86C01B32/05
CPCC01B32/05H01G11/24H01G11/30H01G11/34H01G11/42H01G11/44H01G11/86Y02E60/13
Inventor 向翠丽杨学英邹勇进徐芬孙立贤
Owner GUILIN UNIV OF ELECTRONIC TECH
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