Advanced analytical techniques to characterize materials for electrochemical capacitors

Materials for electrochemical capacitors.

Electrochemical capacitors, also called supercapacitors, store energy using either ion adsorption (electrochemical double layer capacitors) or fast surface redox reactions (pseudo-capacitors). They can complement or replace batteries in electrical energy storage and harvesting applications, when high power delivery or uptake is needed. A notable improvement in performance has been achieved thro...

Manganese Oxides : Battery Materials Make the Leap to Electrochemical Capacitors

Manganese oxides have a relatively long history in the world of battery chemistry, dating back to the work of Leclanché in the 1860s, which ultimately formed the basis for the now-ubiquitous primary 1.5 V Zn/ MnO2 alkaline cell.1 In the alkaline cell, manganese oxide (typically in the γMnO2 form) serves as the active cathode material, and stores charge via the insertion of protons from the aque...

Hybrid nanostructured materials for high-performance electrochemical capacitors

Ultrasonic modification of carbon materials for electrochemical capacitors

The paper is devoted to study the ultrasonic impact on the biomass of natural raw materials, which were used for the creation a nanoporous carbon material (NCM), which was used as electrode material for electrochemical capacitors (EC). The dry shells of apricot seeds were a feedstock, which were modified by the chemical treatment in the phosphoric acid and part of them were impacted by ultrason...

Carbon materials for the electrochemical storage of energy in capacitors

The electrochemical storage of energy in various carbon materials (activated carbons, aerogels, xerogels, nanostructures) used as capacitor electrodes is considered. Different types of capacitors with a pure electrostatic attraction and/or pseudocapacitance effects are presented. Their performance in various electrolytes is studied taking into account the different range of operating voltage (1...