Complexes Containing Redox Noninnocent Ligands for Symmetric, Multielectron Transfer Nonaqueous Redox Flow Batteries
| Autor: | Xingyi Yang, Rachel E. M. Brooner, Pablo J. Cabrera, Krista L. Hawthorne, Levi T. Thompson, James A. Suttil, Melanie S. Sanford |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element Electron Electrolyte Redox Energy storage Surfaces Coatings and Films Electronic Optical and Magnetic Materials Metal Bipyridine chemistry.chemical_compound Chromium General Energy chemistry visual_art Electrode visual_art.visual_art_medium Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 119:15882-15889 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.5b03582 |
| Popis: | Redox flow batteries (RFBs) hold promise for use in large-scale energy storage applications, but new electrolyte chemistries are needed to significantly enhance their energy densities and lower their cost. The energy density is governed by the cell voltage, active species concentration, and number of electrons transferred at each electrode. Nonaqueous solvents offer wider voltage windows than water; however, most if not all of the previously reported active species have low solubilities and/or are limited to single electron transfer at each electrode. In this paper we describe the design, synthesis, and characterization of metal coordination complexes containing noninnocent ligands that demonstrate enhanced solubilities at different oxidation states along with multiple electron transfers. In particular, a series of ester-functionalized chromium bipyridine complexes are demonstrated that afford six reversible redox couples over ∼2 V and solubilities approaching 1 M. These characteristics allow the same com... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|