| abstract |
The invention relates to an electrochemical device (10) comprising an electrochemical cell (1), equipped with a first anode (3) and a first electrolyte (5), and a supercapacitor (2) equipped with a second anode (4) and a second electrolyte (6); the electrochemical cell (1) and the supercapacitor (2) are arranged in series and there is a single shared cathode (11). The first anode (3) and the second anode (4) are connected directly to each other. The cathode (11) comprises a porous matrix (12) infused with an active substance (13) belonging to the group of chalcogens. The electrochemical device (10) according to the invention is able to accumulate and deliver simultaneously high levels of both energy (higher than 500 Wh/kg) and power (higher than 1,000 W/kg), and finds applications for electric vehicles and for renewable energy storage systems. |