Views: 1 Author: Yi Jinliang, Yang Min, Song Fangxiang, Chen Qianlin Publish Time: 2022-05-31 Origin: https://doi.org/10.19964/j.issn.1006-4990.2022-0121
Fungus, also known as black fungus, has high nutritional and health care value. It is mainly distributed in China and Japan. In my country, it is mostly concentrated in Heilongjiang, Jilin, Liaoning and other places. Fungus is sweet, neutral in nature, and returns to the lung, spleen, large intestine, and liver meridians, and has the functions of nourishing qi and nourishing blood, moisturizing the lung, regulating blood lipids, lowering blood pressure, and lowering blood sugar. It has the effect of "replenishing qi without hunger, lightening the body and strengthening aspirations, and curing hemorrhoids by breaking the valley". Modern research shows that the main active components of fungus include fungus polysaccharide, melanin, protein, lectin and various elements such as iron, calcium and phosphorus. Usually fungus is used as a food supplement, but with the continuous discovery of bioactive components of fungus and the development of modern pharmacology, the various pharmacological activities of fungus, such as nourishing blood, lowering blood sugar, regulating blood lipids, and enhancing immune function, have been continuously confirmed.
In addition, the latest research shows that fungus can also be used as a supercapacitor material.
With the rapid growth of the global economy, the demand for energy has increased sharply, which has not only caused resource shortages, but also caused a series of environmental problems. Therefore, the development and application of clean energy such as wind energy and solar energy is imminent, but the supply of these energy sources has certain limitations. Therefore, it is necessary to develop low-cost, large-capacity and environmentally friendly energy conversion and storage devices to store these clean energy sources so that they can be used at any time. As a new type of energy storage device, supercapacitors have attracted extensive attention due to their advantages of long cycle life, short charge and discharge time, and good temperature characteristics.
The biomass fungus has the advantages of strong water absorption and short growth cycle. The researchers soaked the fungus, washed it, dried it, crushed it and sieved it, and stored it at 60 °C. The fungus powder was taken, fully soaked in deionized water, and then transferred to a 150 mL polytetrafluoroethylene-lined autoclave, and hydrothermally heated at 120 °C for 12 h. Then ultrasonically dispersed for 1 h to obtain a homogeneous fungus-based solution.
Then, using the homogeneous solution prepared from fungus as carbon source and ZIF-67 precursor by hydrothermal and high temperature calcination, a CoS/NSAC composite with high specific surface area and nitrogen-sulfur co-doping was successfully prepared, which can be directly used as Supercapacitor material. Due to the synergistic effect and abundant pore structure between N,S co-doped fungus carbon and CoS, the material has good electrochemical performance. The specific capacity is 484.8F/g at a current density of 0.5A/g; 167.5F/g even at 50 A/g; fast ion transport rate, and good cycling stability. The assembled asymmetric supercapacitors have high power density and energy density, enabling LED bulbs to emit light normally.
Therefore, fungus is not only delicious, but also has various pharmacological effects such as nourishing blood, lowering blood sugar, regulating blood lipids, and enhancing immune function. It can also be used as a new material for supercapacitors. It is well-deserved to say that it is a treasure edible fungus!
