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Trichoderma-regulated biomass porous activated carbon as well as preparation method and application thereof

A technology of porous activated carbon, biomass, applied in chemical instruments and methods, carbon compounds, hybrid/electric double layer capacitor manufacturing, etc.

Active Publication Date: 2021-05-18
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no relevant research has been reported so far. How to use Trichoderma to treat biomass to prepare porous activated carbon has become a technical problem to be solved urgently.

Method used

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  • Trichoderma-regulated biomass porous activated carbon as well as preparation method and application thereof
  • Trichoderma-regulated biomass porous activated carbon as well as preparation method and application thereof
  • Trichoderma-regulated biomass porous activated carbon as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of trichoderma regulating biomass porous activated carbon is carried out according to the following steps:

[0041] (1) Preparation of precursor:

[0042] Wheat straw was harvested from the farm of Sichuan Agricultural University. The collected wheat straw was air-dried and ground through a 40-mesh sieve for later use.

[0043] Collect food waste from school canteens and pick out the non-degradable parts including bones, eggshells, chopsticks, plastics, etc. After solid-liquid separation, the solid part was dried at 105° C. for 12 h, and then ground through a 40-mesh sieve.

[0044] In order to maintain the suitable C / N ratio required for the growth of Trichoderma to be 15-20:1, the medium was prepared by mixing wheat straw and kitchen waste at a weight ratio of 7:3, and adjusting the moisture content to about 70%. After sterilization, the medium was inoculated with Trichoderma suspension. The inoculated medium was cultured at 28°C for 7 days, an...

experiment example 1

[0071] First with 6.0mol·L -1 KOH was used as the electrolyte, and the electrochemical performance of WFT-700, WFT-800 and WFT-900 was evaluated in a three-electrode system. Figure 5 a is the scan rate of 25mV s -1 Comparison of typical activated carbon CV curves. An almost rectangular shape with small and wide humps can be observed on the CV curves of WFT-700, WFT-800, and WFT-900, which is consistent with the electric double layer capacitive behavior and pseudocapacitive response induced by heteroatom doping The combined results have a lot to do with it. In addition, the CV curve area of ​​WFT-900 is larger than that of WFT-700 and WFT-800, indicating that it has the highest specific capacitance. The experiment further draws 10 ~ 100mV s -1 CV curves of WFT-x at different scan rates (such as Figure 5 b. Figure 10 shown). With the increase of scan rate, the CV curve of WFT-900 even at 100mV·s -1 It can also maintain a nearly rectangular shape at a high scan rate, w...

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Abstract

The invention provides trichoderma-regulated biomass porous activated carbon as well as a preparation method and application thereof. According to the invention, the mixed waste biomass grown by trichoderma is used for preparing the carbon material precursor for the first time, wherein the obtained activated carbon has the characteristics of large specific surface area, large pore volume, proper pore size distribution and abundant surface functional groups. When the carbon sources are used as electrode materials of a supercapacitor, electrochemical performance better than that of biomass derived carbon can be obtained. The invention provides a sustainable biological utilization method for obtaining an excellent supercapacitor electrode material by fully utilizing biomass wastes.

Description

technical field [0001] The invention belongs to the technical field of biomass porous activated carbon and its preparation, and in particular relates to a preparation method of biomass porous activated carbon regulated by trichoderma for supercapacitors. Background technique [0002] In recent decades, with the massive consumption of traditional fossil fuels, severe energy crisis and environmental degradation have been caused. Green and sustainable energy sources (such as solar energy, wind energy, and tidal energy) are gradually becoming an important part of global energy, but the efficient storage of energy is one of the most critical technologies that needs to be addressed. [0003] Supercapacitors have become one of the most promising energy storage technologies due to their remarkable power density, long-term cycle stability, and fast charge-discharge capabilities, and have been widely used in automotive, national defense, electronic equipment, and machinery. Electrode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/348H01G11/32H01G11/86
CPCC01B32/324C01B32/348H01G11/32H01G11/86Y02E60/13
Inventor 沈飞刘章林黄梅赵丽田东曾咏梅
Owner SICHUAN AGRI UNIV
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