The Investigation Of Supercapacitor Inspired By The Burnt-pot

With the continuous consumption of non-renewable energy,energy storage equipment has attracted more and more attention.Super capacitor is a new type of electrochemical energy storage equipment.Due to its high energy density,good cycle stability,safety and environmental protection,it has attracted much attention.The electrode is the core component of the super capacitor,and the performance of the electrode material determines the performance of the super capacitor.In recent years,biocarbon materials have attracted more and more attention due to their low cost,easy availability,and good electrical conductivity.In daily life,boiled millet is easy to carbonize on the bottom of the pot,which simply prepares the bio-carbon material.Inspired by this,a series of two-dimensional Amorphous carbon material（carbon black）,the research results obtained are as follows:（1）In this study,inspired by the burnt-pot,a CNs@Co O/Co F₂ hybrid structure was synthesized on nickel foam,which can be widely used as an electrode for ultra-high energy density supercapacitors.The preparation method has the advantages of small impact on the environment,low cost,and easy processing.Due to the synergistic effect of carbon nanosheets（CN）and Co O,the resulting electrode exhibits a high specific capacitance（12.00F/cm²）and excellent cycle charge and discharge performance.Three 2x2cm supercapacitors can power LED lights for ten minutes after two minutes of charging.（2）C-Ni-graphene-nickel-plated electrode without binder also shows excellent capacitance performance and is a potential candidate for practical applications.It has very high area specific capacitance and mass specific capacitance.During the first1000 charge and discharge cycles,with the electrodes are gradually activated,the capacitance will increase to 114%of the initial value.With the continuous charge-discharge cycle,the redox peak moves to the two poles,and the capacitance performance gradually stabilizes.Even at high current densities of 20 and 50 m A/cm²,the area specific capacitance can reach 4.58 and 2.83 F/cm².A 2x2cm symmetric super capacitor can power a small aircraft motor for one minute.（3）In this study,superhydrophobic foamed nickel materials were also prepared.Such foamed nickel materials can also be used as electrode materials for supercapacitors.Compared with some current electronic devices,superhydrophobic electrode materials have great advantages.Ordinary electronic equipment will fail after being eroded by water.However,due to the super-hydrophobic nature of our nickel foam equipment,after being eroded by water,you can continue to use it by simply drying the water on the equipment.This is very convenient for our daily life.In addition,this kind of foamed nickel material can also be oil-water separated,and it still maintains good hydrophobicity after sanding on sandpaper 50 times under a pressure of 2000N.