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Preparation method of asymmetric supercapacitor based on molybdenum diselenide/charcoal

A supercapacitor and molybdenum diselenide technology, which is applied in the field of preparation of asymmetric supercapacitors, can solve the problems of high preparation cost and low specific capacitance, and achieve the effects of low cost, renewable cost and wide sources

Active Publication Date: 2019-10-25
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention solves the problems of high preparation cost and low specific capacitance of existing carbon materials, and provides a method for preparing an asymmetric supercapacitor based on molybdenum diselenide / charcoal

Method used

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  • Preparation method of asymmetric supercapacitor based on molybdenum diselenide/charcoal
  • Preparation method of asymmetric supercapacitor based on molybdenum diselenide/charcoal
  • Preparation method of asymmetric supercapacitor based on molybdenum diselenide/charcoal

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specific Embodiment approach 1

[0037] Specific embodiment one: present embodiment is a kind of preparation method based on molybdenum diselenide / charcoal asymmetric supercapacitor, and it is carried out according to the following steps:

[0038] 1. Delignification:

[0039] ①. Cut the wood raw material into square thin slices along the growth direction of the trees to obtain wood chips with a thickness of 1 mm to 10 mm;

[0040] ②. Immerse wood chips with a thickness of 1mm to 10mm in NaOH and NaOH 2 SO 3 mixed solution, and heated in a water bath at a temperature of 50°C to 100°C for 1h to 10h, and then poured out the waste liquid to obtain NaOH and NaOH 2 SO 3 treated wood;

[0041] The NaOH and Na 2 SO 3 The mixed solution is NaOH solution with a concentration of 0.01mmol / L~10mmol / L and NaOH solution with a concentration of 0.01mmol / L~10mmol / L 2 SO 3 The solution is mixed according to the volume ratio of 1: (0.1 ~ 10);

[0042] ③, NaOH and Na 2 SO 3 The treated wood is boiled with deionized wa...

specific Embodiment approach 2

[0064] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the wood raw material described in step 1 is broad-leaved wood. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0065] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the wood raw material described in step 1 is balsa wood. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of an asymmetric supercapacitor based on molybdenum diselenide / charcoal, and relates to a preparation method of an asymmetric supercapacitor. The invention solves the problems of high preparation cost and low specific capacitance of the existing carbon material. The preparation method comprises the steps of first, removing lignin; second, preparing molybdenum diselenide powder; third, preparing wood chips loaded with molybdenum diselenide; fourth, preparing a molybdenum diselenide / charcoal composite material; fifth, preparing charcoal; sixth, preparing a manganese dioxide / charcoal composite material; and seventh, preparing an asymmetric supercapacitor. The scheme of the invention is applied to the preparation of the asymmetric supercapacitor based on molybdenum diselenide / charcoal.

Description

technical field [0001] The invention relates to a preparation method of an asymmetric supercapacitor. Background technique [0002] With the rapid consumption of traditional fossil resources and the increasing environmental pollution, the demand for green, sustainable new energy materials and low-cost, high-performance energy storage systems is becoming increasingly urgent. The development of more environmentally friendly and efficient energy storage and conversion technologies is the key to achieving global energy sustainability. The development of supercapacitors provides the possibility to realize the sustainable utilization of energy. Supercapacitors have many advantages such as high specific capacitance, high power density, fast charging and discharging speed, long service life, wide applicable temperature range and high safety, and are widely used in military, aviation, hybrid vehicles, mobile communications and other fields. At present, research on supercapacitors i...

Claims

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Application Information

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IPC IPC(8): H01G11/84H01G11/86H01G11/30H01G11/32H01G11/46
CPCH01G11/30H01G11/32H01G11/46H01G11/84H01G11/86Y02E60/13
Inventor 万才超魏松吴义强张陆雨田文燕刘心怡
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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