Journal article
Influences from solvents on charge storage in titanium carbide MXenes
Nature Energy, v 4(3), pp 241-248
04 Mar 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
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 Wang - Drexel UniversityTyler S Mathis - Drexel UniversityKe Li - Drexel UniversityZifeng Lin - Centre interuniversitaire de recherche et d'ingenierie des matériauxLukas Vlcek - Oak Ridge National Laboratory [Oak Ridge]Takeshi Torita - Murata Manufacturing (JAPAN)Naresh C Osti - Oak Ridge National Laboratory [Oak Ridge]Christine Hatter - Drexel UniversityPatrick Urbankowski - Drexel UniversityAsia Sarycheva - Drexel UniversityMadhusudan Tyagi - NIST Center for Neutron ResearchEugene Mamontov - Oak Ridge National Laboratory [Oak Ridge]Patrice Simon - Centre interuniversitaire de recherche et d'ingenierie des matériauxYury Gogotsi - Drexel University
- Publication Details
- Nature Energy, v 4(3), pp 241-248
- Publisher
- Nature Publishing Group
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000461124600016
- Scopus ID
- 2-s2.0-85062471269
- Other Identifier
- 991014969874504721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Energy & Fuels
- Materials Science, Multidisciplinary