Journal article
New aqueous energy storage devices comprising graphite cathodes, MXene anodes and concentrated sulfuric acid solutions
Energy Storage Materials, v 32, pp 1-10
Nov 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The newly emerging demand for ‘beyond-lithium’ electrochemical energy storage systems necessitates the development of alternative options in providing sustainable cost-effective storage capabilities. In pursuit of discovering such a solution, the intercalation of bisulfate anions into graphite in 17 M H2SO4 solutions has been revaluated. Although the insertion process of bisulfate into graphite was extensively studied many years ago, only poor electrochemical performance has been demonstrated. In this work, we discovered the superior performance of the graphite bisulfate system, associated with the electrodes’ fabrication method which presents a high energy density of more than 80 mW h/g and a surprising rate capability (75 mW h/g was obtained at 15 C) alongside impressive long-term stability of more than 1500 cycles with only 5% capacity fading. Potentiostatic intermittent titration technique followed by slow-scan-rate cyclic voltammetry (SSCV) was used to shed light on the bisulfate intercalation process. Combining the bisulfate intercalation into the graphite with a highly reversible proton insertion process into Ti3C2 MXene in such a concentrated acidic environment allows the development of a dual-ion device composed of graphite positive electrode (cathode) and MXene negative electrode (anode). This asymmetric system shows a high energy density of 35 mW h/g, good cyclability and an extended potential window of 1.5 V, demonstrating new opportunities for further developments of intercalation electrodes for large energy storage.
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Details
- Title
- New aqueous energy storage devices comprising graphite cathodes, MXene anodes and concentrated sulfuric acid solutions
- Creators
- Netanel Shpigel - Department of Materials Science and Engineering, And A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USAFyodor Malchik - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelMikhael D Levi - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelBar Gavriel - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelGil Bergman - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelShay Tirosh - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelNicole Leifer - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelGil Goobes - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelReut Cohen - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelMichal Weitman - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelHagit Aviv - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelYaakov R Tischler - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelDoron Aurbach - Department of Chemistry and BINA – BIU center for Nanotechnology and Advanced materials, Bar-Ilan University, Ramat-Gan, 5290002, IsraelYury Gogotsi - Department of Materials Science and Engineering, And A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USA
- Publication Details
- Energy Storage Materials, v 32, pp 1-10
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000577179100001
- Scopus ID
- 2-s2.0-85087936203
- Other Identifier
- 991014970030804721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology