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Manufacturing methodof rhenium disulfide supercapacitor based on biological template method growth

A technology of supercapacitor and manufacturing method, which is applied in chemical instruments and methods, hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problem that rhenium disulfide is prone to stacking and agglomeration, and rhenium disulfide cannot be widely used in supercapacitors. Active materials, low crystallinity, etc., achieve the effects of green production practice, easy production practice, and increased specific surface area

Pending Publication Date: 2020-05-19
SOUTH CHINA NORMAL UNIVERSITY
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Problems solved by technology

[0004] For the rhenium disulfide material synthesized by hydrothermal method, its characteristics are: high yield and easy to obtain, but the disadvantage is that rhenium disulfide is easy to stack and agglomerate, and the crystallinity is not high, and this shortcoming prevents rhenium disulfide from being used in large quantities in supercapacitor active materials

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  • Manufacturing methodof rhenium disulfide supercapacitor based on biological template method growth
  • Manufacturing methodof rhenium disulfide supercapacitor based on biological template method growth
  • Manufacturing methodof rhenium disulfide supercapacitor based on biological template method growth

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Embodiment

[0036] Step 1: Carbonization is a typical method for constructing biological templates. However, severe heat treatment easily deteriorates the pollen structure, leading to morphological collapse and pore size reduction. Therefore, pre-carbonization treatment is necessary to strengthen the structure. In Example 1 of the present invention, 10 g of crude rape pollen grains (Kanghuang Bee Industry Co., Ltd.) were immersed in ethanol (analytical grade, Chengdu Cologne reagent) for 1 h ultrasonic treatment (75W, 40KHz), and then rinsed with deionized water 3 times. Subsequently, the treated crude rape pollen grains were added to 150 mL mixed solution (V ethanol: V formaldehyde = 1: 1) (analytical grade, Chengdu Cologne reagent) under stirring for 10 minutes, then washed and filtered through deionized water for 3 Second-rate. Afterwards, crude rape pollen grains were transferred into 100 mL of 12 M sulfuric acid and vigorously stirred in a water bath at 80 °C for 4 h. After filte...

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Abstract

The invention belongs to the technical field of supercapacitors, and particularly relates to a manufacturing methodof a rhenium disulfide supercapacitor based on biological template method growth, which comprises the following steps: step 1, pretreating a pollen biochar material; 2, synthesizing an ultrahigh-density rhenium disulfide nanosheet on apretreated biological carbon template; 3, performing high-temperature annealing treatment onsynthesized ultrahigh-density rhenium disulfide nanosheet grown by the biological template method; and 4, preparing aproduct obtained in the step 3 into an active material, and assembling the active material into the all-solid-state supercapacitor. The material prepared by the invention is ultrahigh-density rhenium disulfide grown on the basis of a three-dimensional porous network structure; the material has the advantages of uniform growth, difficult agglomeration, provision of a large specific surface area to improve the capacity when used as a supercapacitor material, use of a carbonized and annealed biochar skeleton as a substitute of a supercapacitor conductive additive, greenness, environmental protection, and easiness in production practice.

Description

technical field [0001] The invention relates to the technical field of biomimetic nanomaterials and novel energy storage devices, in particular to a method for manufacturing a supercapacitor grown based on a biological template method. Background technique [0002] With the advent of smart devices and the depletion of traditional fossil fuels, the urgent need for clean energy storage technologies has become a common problem to be solved. Compared with other energy storage technologies such as lithium batteries, supercapacitors have attracted increasing attention due to their extraordinary power density, fast charging speed, long-term cycle stability and environmental friendliness. A wide variety of supercapacitors have been applied in many fields, such as electric vehicles, powertrains, and flexible mobile devices. In recent years, transition metal dichalcogenides (TMDs), such as MoS2, VS2 and WS2, etc., have attracted extensive attention in electrochemical energy storage d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G47/00H01G11/24H01G11/30H01G11/32H01G11/86
CPCC01G47/00H01G11/24H01G11/30H01G11/32H01G11/86C01P2004/03C01P2002/82C01P2006/40C01P2004/20Y02E60/13
Inventor 张璋汪敏捷陈泽玲容诗雅
Owner SOUTH CHINA NORMAL UNIVERSITY
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