As portable electronics and electric vehicles to the rapid development of lightweight, miniaturization, develop to match both high volume energy density and high power density of long-life energy storage devices become the most pressing needs.
Wenzhou university professor Jin Huile the material institute according to the market demand and combining with the characteristics of wenzhou play born again material carbon new height, he took advantage of wenzhou arbutus preparation of high-performance super capacitor, improved the super capacitor application market.
Yang mei recycles and optimizes biomass carbon-based materials.
“Yang mei is a specialty of wenzhou, but Yang mei picking cycle short, mature cannot eat Yang mei be born, this is a loss, we fully make arbutus reuse of the topic, develop biomass utilization value.”
“The teacher said.
Super capacitor is a kind of energy storage devices can store and release energy quickly, the output power is dozens of times of general battery charging time in seconds and minutes as the unit, at the same time practical longer life, compared to the lithium battery and battery combination rises, it will be a storage energy systems of both high specific power output.
According to introducing, this experiment USES the simple preparation of Fe2O3 / FeS modified N, S – a total of doping method of layered porous carbon materials with precursors biomass arbutus, through regulating the arbutus water with ferric sulfate (thermal, can control the microstructure and composition.
Mr. Kim likens the process of capacitors to Yang mei’s wine, which is like a capacitor plate, and the process of absorbing molecules is like storing energy.
By using the characteristics of large surface area, the morphological structure, specific surface area, pore diameter distribution and doping elements were prepared by using the components of the reactants or the annealing temperature control materials.
Compared with traditional biomass carbon-based capacitors, this material has a high volume ratio of capacitance (1320.4 F/cm3) and volume energy density, and remains extremely high stability under large current charging and discharging.
The prospects are broad, and the products involve many areas of life and military industry.
Today, the market mainly traditional batteries and capacitors, but the traditional battery charging time long, short cycle life become development board, the common capacitor problems such as poor stability and capacity great error.
It not only solves the problem of time and stability, but also makes full use of the advantages of biomass carbon, and is more selective in cost.
So what is the future of this material?
Jin Huile teacher said that the reaction of the preparation of carbon materials and super capacitor with fast charging and discharging rate (< 1 s), long cycle life (> 50000 times, 80 A/g) under current density, high volume capacitance (F / 1320.4 cm3, 0.1 A/g), and high energy density (100.9 Wh/kg and Wh / 221.9 L) etc., can be applied to daily life and military industry products, in transport, energy, industrial, military, and other areas of the high power play an important role.
At present, the largest application of super capacitor in the market is transportation and energy regeneration.
New energy vehicles become one of the representative of the super capacitor in the transport industry, put into operation in several provinces and cities and formed a certain scale, the charging time is short, to reduce the impact on the residents’ travel.
Super capacitor can improve the power efficiency of hybrid electric power and fuel cell, accelerate or climb to extend battery life, provide large current discharge and stop braking energy recovery.
According to Jin Huile teacher said, in addition to life, super capacitor has combined with the battery to provide dynamic support for aircraft, tanks and other military weapons and future industry development, the super capacitor will all aspects involved in industry, there is energy storage power will be the existence of the super capacitor.
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Post time: May-17-2018