U.S. Department of Energy Office of Scientific and Technical Information
Phase transformation and electrochemical charge storage properties of vanadium oxide/carbon composite electrodes synthesized via integration with dopamine
Journal Article·· Journal of the American Ceramic Society
Chemically preintercalated dopamine (DOPA) molecules were used as both a reducing agent and a carbon precursor to prepare δ‐V2O5·nH2O/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:V2O5ratio used to synthesize (DOPA)xV2O5precursors through DOPA diffusion into the interlayer region of the δ‐V2O5·nH2O 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. δ‐V2O5·nH2O/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.
Andris, Ryan, et al. "Phase transformation and electrochemical charge storage properties of vanadium oxide/carbon composite electrodes synthesized via integration with dopamine." Journal of the American Ceramic Society, vol. 106, no. 1, Apr. 2022. https://doi.org/10.1111/jace.18502
Andris, Ryan, Averianov, Timofey, & Pomerantseva, Ekaterina (2022). Phase transformation and electrochemical charge storage properties of vanadium oxide/carbon composite electrodes synthesized via integration with dopamine. Journal of the American Ceramic Society, 106(1). https://doi.org/10.1111/jace.18502
Andris, Ryan, Averianov, Timofey, and Pomerantseva, Ekaterina, "Phase transformation and electrochemical charge storage properties of vanadium oxide/carbon composite electrodes synthesized via integration with dopamine," Journal of the American Ceramic Society 106, no. 1 (2022), https://doi.org/10.1111/jace.18502
@article{osti_2420253,
author = {Andris, Ryan and Averianov, Timofey and Pomerantseva, Ekaterina},
title = {Phase transformation and electrochemical charge storage properties of vanadium oxide/carbon composite electrodes synthesized via integration with dopamine},
annote = {Abstract Chemically preintercalated dopamine (DOPA) molecules were used as both a reducing agent and a carbon precursor to prepare δ‐V2O5·nH2O/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:V2O5ratio used to synthesize (DOPA)xV2O5precursors through DOPA diffusion into the interlayer region of the δ‐V2O5·nH2O 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. δ‐V2O5·nH2O/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.},
doi = {10.1111/jace.18502},
url = {https://www.osti.gov/biblio/2420253},
journal = {Journal of the American Ceramic Society},
issn = {ISSN 0002-7820},
number = {1},
volume = {106},
place = {United States},
publisher = {American Ceramic Society},
year = {2022},
month = {04}}