Characterization of supercapacitors in operation regime

Co-PI: Hudson Zanin – UNICAMP – School of Electrical and Computer Engineering – hudsonzanin@gmail.com

The main objectives are to develop supercapacitor devices for the storage and delivery of high energy (100Wh / kg) and power (100kW / kg) densities and evaluate various electrode/electrolyte interfaces in various operating modes. More specifically, the objective is to study the loading and discharge during cycling tests in devices produced with carbon electrodes composed of mesoporous (pores from 2 to 50nm) and high surface area (> 300m2 / g) immersed in aqueous, organic and ionic electrolytes. Surface transformations will be investigated in the loading and unloading processes and surface modifications that lead the device to collapse and in this way propose solutions that seek to increase its useful life. Seeking to maintain at least 80% of the initial Energy, Power and Capacitance after 100,000 cycles is an intended goal. For that, different electrodes, electrolytes and sealing types of the devices will be investigated in detail, as well as various in situ characterization techniques such as Raman, SECM, FTIR, AFM, SEM and XRP, among others.