fuel cells, secondary batteries and capacitors are among many promising energy storage devices. in particular, supercapacitors have attracted much attention because of their long life cycle and high power density. graphene/nickel ferrite(g-nf) based supercapacitors were successfully fabricated through a one-step facile solvothermal route. effects of synthesis conditions i.e. solvothermal time a...

Faced with the exhaustion of traditional energy sources, development new devices is current priority. Supercapacitor a type storage device high power density and long cycle life. Carbon material, metal oxide conductive polymer are three common electrode materials supercapacitors. Based on China’s situation, this paper puts forward ideas from coal to graphene In addition, research progress super...

Steel was anodized in 10 M NaOH to enhance its surface texture and internal surface area for application as an electrode in supercapacitors. A mechanism was proposed for the anodization process. Field-emission gun scanning electron microscopy (FEGSEM) studies of anodized steel revealed that it contains a highly porous sponge like structure ideal for supercapacitor electrodes. X-ray photoelectro...

EDLC cells based on activated carbon as host material electrodes were fabricated and tested. The MWCNT additive was added into the host material to form a nanocomposite and the effect of the MWCNTs concentration on improving the performance of the EDLC cells was explored. 1M TEABF4-PC solution was used as organic electrolyte. The nanocomposites functioned differently in improving the specific p...

A novel, efficient and green MOFs-templated sulfidation route has been developed to synthesize Cu(1.96)S-C hybrid composites, in which ultrafine Cu(1.96)S nanoparticles are embedded uniformly within porous carbon octahedra. The as-synthesized composites exhibit high specific capacitance and good cycling performance in supercapacitors.

A sodiothermic reduction method has been developed for the preparation of porous silicon using aluminosilicate zeolite NaY as a precursor. The porous silicon with a specific surface area of approximately 570 m(2) g(-1) shows distinct capacitive behavior when used as an electrode material for supercapacitors.