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Book chapter
Influences from Solvents on Charge Storage in Titanium Carbide MXenes
MXenes, pp 783-810
2023
Abstract
Pseudocapacitive energy storage in supercapacitor electrodes differs significantly from the electrical double-layer mechanism of porous carbon materials, which requires a change from conventional thinking when choosing appropriate electrolytes. Here we show how simply changing the solvent of an electrolyte system can drastically influence the pseudocapacitive charge storage of the two-dimensional titanium carbide, Ti3C2 (a representative member of the MXene family). Measurements of the charge stored by Ti3C2 in lithium-containing electrolytes with nitrile-, carbonate- and sulfoxide-based solvents show that the use of a carbonate solvent doubles the charge stored by Ti3C2 when compared with the other solvent systems. We find that the chemical nature of the electrolyte solvent has a profound effect on the arrangement of molecules/ions in Ti3C2, which correlates directly to the total charge being stored. Having nearly completely desolvated lithium ions in Ti3C2 for the carbonate-based electrolyte leads to high volumetric capacitance at high charge- discharge rates, demonstrating the importance of considering all aspects of an electrochemical system during development.
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Details
- Title
- Influences from Solvents on Charge Storage in Titanium Carbide MXenes
- Creators
- Xuehang WangTyler S. MathisKe LiZifeng LinLukas VlcekTakeshi ToritaNaresh C. OstiChristine HatterPatrick UrbankowskiAsia SarychevaMadhusudan TyagiEugene MamontovPatrice SimonYury Gogotsi
- Contributors
- Yury Gogotsi (Editor)
- Publication Details
- MXenes, pp 783-810
- Publisher
- Jenny Stanford Publishing
- Number of pages
- 28
- Resource Type
- Book chapter
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Other Identifier
- 991020595416704721