000K  utf8
1100  2021$c2021-07-14
1500  eng
2050  urn:nbn:de:gbv:27-dbt-20210907-163528-009
2051  10.3390/en14144250
3000  Melchiorre, Massimo
3010  Abbate, Giancarlo
3010  Balducci, Andrea
3010  Di Serio, Martino
3010  Esposito, Roberto
3010  Lampasi, Alessandro
3010  Ruffo, Francesco
4000  Lactic Acid-Based Solvents for Sustainable EDLC Electrolytes  [Melchiorre, Massimo]
4060  17 Seiten
4209  The most relevant electrolytes used in commercial electrical double layer capacitors (EDLCs) are based on non-aqueous solvents as acetonitrile (ACN) and propylene carbonate (PC). However, these solvents are synthesized from non-renewable fossil feedstocks, making it desirable to develop more sustainable alternatives. To address this issue, in this work lactic acid was used to synthesize a panel of substances with small structural variation. The investigated products belong to the chemical family of ketals, and among them the 5-methyl-1,3-dioxolan-4-one (LA-H,H) was found to be the most suitable to prepare electrolytic solutions. Therefore, LA-H,H was combined with triethylmethylammonium tetrafluoroborate (TEMABF4 ), and analyzed in symmetrical EDLC. This electrolyte was thoroughly characterized by cyclic voltammetry, galvanostatic cycles and electrochemical impedance spectroscopy (EIS), disclosing competitive performances compared to PC-based electrolyte. The EDLC with LA-H,H/TEMABF4 displayed a specific energy and power of 13.4 Whkg−1 and 22.5 kWkg−1 respectively, with an optimal cycling stability over 5000 cycles at different current densities.
4950  https://doi.org/10.3390/en14144250$xR$3Volltext$534
4950  https://nbn-resolving.org/urn:nbn:de:gbv:27-dbt-20210907-163528-009$xR$3Volltext$534
4961  https://www.db-thueringen.de/receive/dbt_mods_00049446
5051  620
5550  5-methyl-1,3-dioxolan-4-one
5550  EDLCs
5550  non-aqueous electrolytes
5550  sustainable solvents