Journal article
Phase transformation and electrochemical charge storage properties of vanadium oxide/carbon composite electrodes synthesized via integration with dopamine
Journal of the American Ceramic Society
29 Apr 2022
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Chemically preintercalated dopamine (DOPA) molecules were used as both a reducing agent and a carbon precursor to prepare delta-V2O5 center dot nH(2)O/C, H2V3O8/C, VO2(B)/C, and V2O3/C nanocomposites via hydrothermal treatment or hydrothermal treatment followed by annealing under Ar flow. We found that the phase composition and morphology of the produced composites are influenced by the DOPA:V2O5 ratio used to synthesize (DOPA)(x)V2O5 precursors through DOPA diffusion into the interlayer region of the delta-V2O5 center dot nH(2)O framework. The increase of DOPA concentration in the reaction mixture led to a more pronounced reduction of vanadium and a higher fraction of carbon in the composites' structure, as evidenced by X-ray photoelectron spectroscopy and Raman spectroscopy measurements. The electrochemical charge storage properties of the synthesized nanocomposites were evaluated in Li-ion cells with nonaqueous electrolytes. delta-V2O5 center dot nH(2)O/C, H2V3O8/C, VO2(B)/C, and V2O3/C electrodes delivered high initial capacities of 214, 252, 279, and 637 mAh g(-1), respectively. The insights provided by this investigation open up the possibility of creating new nanocomposite oxide/carbon electrodes for a variety of applications, such as energy storage, sensing, and electrochromic devices.
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Details
- Title
- Phase transformation and electrochemical charge storage properties of vanadium oxide/carbon composite electrodes synthesized via integration with dopamine
- Creators
- Ryan Andris - Drexel UniversityTimofey Averianov - Drexel UniversityEkaterina Pomerantseva - Drexel University
- Publication Details
- Journal of the American Ceramic Society
- Publisher
- Wiley
- Number of pages
- 13
- Grant note
- DMR-1752623 / National Science Foundation (NSF); National Research Foundation of Korea DE-SC0012673 / U.S. Department of Energy, Office of Science, Basic Energy Sciences; United States Department of Energy (DOE) DMR-1609272 / NSF; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000788551300001
- Scopus ID
- 2-s2.0-85128985905
- Other Identifier
- 991019168424404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Ceramics