Lithium-air batteries, are an extremely attractive technology for electrical energy storage, because of their far higher theoretical specific energy than that of conventional batteries. However, some issues, such as the stability of the electrolyte or the slow oxygen reduction reaction (ORR) during charging are still to be overcome. At the same time environmental problems push researchers to develop practical and convenient ways to perform useful materials recycling. In this contest, this work evaluates an innovative high pressure water jet recycling method of tires followed by a pyrolysis process at three different temperature: 500 °C, 800°C and 1000 °C to produce three hard carbon materials to be used as cathode in lithium air batteries. The obtained materials were characterized by SEM, EDX, BET, Raman and XRD analysis, while the electrochemical characterization has been performed by charge/discharge cycles in galvanostatic mode. A comparison between the so obtained three carbon powder materials has been carried out. A specific capacity up to 1000 mAh/g have been obtained in all cases even if the powder treated at 1000°C seems to have a better electrochemical behaviour, but further tests are needed.
Preliminary electrochemical study of carbon powder material obtained by high pressure water jet recycling process of tires and used as cathode in Lithium-Air batteries / Dell'Era, Alessandro; Pasquali, Mauro; Scaramuzzo, Fa.; Tuffi, R.; Ottaviani, Michela; Botti, S.. - (2019). (Intervento presentato al convegno CEEC-TAC5 & Medicta2019 joint conference tenutosi a Rome).
Preliminary electrochemical study of carbon powder material obtained by high pressure water jet recycling process of tires and used as cathode in Lithium-Air batteries
Dell'Era Alessandro;Pasquali Mauro;Scaramuzzo FA.;Tuffi R.;Ottaviani Michela;
2019
Abstract
Lithium-air batteries, are an extremely attractive technology for electrical energy storage, because of their far higher theoretical specific energy than that of conventional batteries. However, some issues, such as the stability of the electrolyte or the slow oxygen reduction reaction (ORR) during charging are still to be overcome. At the same time environmental problems push researchers to develop practical and convenient ways to perform useful materials recycling. In this contest, this work evaluates an innovative high pressure water jet recycling method of tires followed by a pyrolysis process at three different temperature: 500 °C, 800°C and 1000 °C to produce three hard carbon materials to be used as cathode in lithium air batteries. The obtained materials were characterized by SEM, EDX, BET, Raman and XRD analysis, while the electrochemical characterization has been performed by charge/discharge cycles in galvanostatic mode. A comparison between the so obtained three carbon powder materials has been carried out. A specific capacity up to 1000 mAh/g have been obtained in all cases even if the powder treated at 1000°C seems to have a better electrochemical behaviour, but further tests are needed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
