Raghibi, M;
Nikiforidis, G;
Anouti, M;
(2023)
Deep Eutectic Mn(NO3)2−H2O Binary System as a Safe, Cost-Effective, and Efficient Electrolyte for Supercapacitor Applications.
ChemElectroChem
, Article e202300183. 10.1002/celc.202300183.
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Abstract
Deep eutectic solvents (DESs) have proved to be an effective substitute for conventional electrolytes for energy storage applications because of their unique properties and ability to adapt them to specific applications. In this regard, this study examines an easy-to-produce, widely available and cheap manganese nitrate concentrated electrolyte that holds DES traits. The electrolyte (i. e., manganese nitrate; (Mn(NO3)2 ⋅ 6H2O with a weight composition of 42 %) revealed its eutectic behaviour by benchmarking the eutectic distance (53 °C), thermal expansion coefficient (3.9×10−4 K), activation energy for conductivity (∼2.45 kJ mol−1), and viscosity (14 kJ mol−1). What's more, it was successfully incorporated into a two-electrode symmetric supercapacitor comprising activated carbon electrodes and demonstrated specific capacitance retention of 93 % (170 F g−1) through 2000 consecutive galvanostatic charge-discharge cycles at 25 and −20 °C.
| Type: | Article |
|---|---|
| Title: | Deep Eutectic Mn(NO3)2−H2O Binary System as a Safe, Cost-Effective, and Efficient Electrolyte for Supercapacitor Applications |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/celc.202300183 |
| Publisher version: | https://doi.org/10.1002/celc.202300183 |
| Language: | English |
| Additional information: | © 2023 The Authors. ChemElectroChem published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Deep eutectic solvent, manganese (II) nitrate hydrate, activated carbon, supercapacitor |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10172480 |
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