Solution redox couples for electrochemical energy storage - 2. Cobalt(III)-cobalt(II) complexes with o-phenanthroline and related ligands
Journal Article
·
· J. Electrochem. Soc.; (United States)
Co(III) and Co(II) complexes with o-phenanthroline, bipyridine, and related ligands were examined by voltammetric and coulometric techniques in aqueous H/sub 2/SO/sub 4/ media to investigate their suitability as redox couples for electrochemical energy storage systems and semiconductor photoelectrochemical cells. The Co(II) complex undergoes a rapid (k/degree/-10/sup /approximately 10/sup -3/ cm/sec) one-electron oxidation at a graphite or platinum electrode to yield the Co(III) complex. With several ligands both forms of the couple are very stable and show formal potentials shifted very negative (to approximately 0.1v vs. SCE) from that of the aquo-Co(III/II) couple. 26 refs.
- Research Organization:
- Univ of Tex, Austin, USA
- OSTI ID:
- 5156174
- Journal Information:
- J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 129:1; ISSN JESOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
CHEMICAL REACTIONS
CHEMISTRY
COBALT COMPLEXES
COMPLEXES
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ENERGY STORAGE
EQUIPMENT
FUEL CELLS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LIGANDS
PHOTOELECTROCHEMICAL CELLS
REDOX FUEL CELLS
REDOX REACTIONS
REGENERATIVE FUEL CELLS
SOLAR EQUIPMENT
STORAGE
SULFURIC ACID
TRANSITION ELEMENT COMPLEXES
VOLTAMETRY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
CHEMICAL REACTIONS
CHEMISTRY
COBALT COMPLEXES
COMPLEXES
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ENERGY STORAGE
EQUIPMENT
FUEL CELLS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LIGANDS
PHOTOELECTROCHEMICAL CELLS
REDOX FUEL CELLS
REDOX REACTIONS
REGENERATIVE FUEL CELLS
SOLAR EQUIPMENT
STORAGE
SULFURIC ACID
TRANSITION ELEMENT COMPLEXES
VOLTAMETRY