Characterization of tetraketone ligands for active materials of all-uranium redox flow battery

Yamamura, Tomoo; Shirasaki, Kenji; Shiokawa, Yoshinobu; Nakamura, Yoshiyuki; Kim, S.-Y.

doi:10.1016/j.jallcom.2003.11.117

Cited by 25 publications

(24 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The tetraketonate ligand, m-bis(2,4-dioxo-l-pentyl)benzene (H 2 T), was synthesized as previously reported [11]. Uranyl(VI) tetraketonate was synthesized by adjusting pH of the mixture of uranyl(VI) nitrate salt and tetraketone ligand, oily coarse product obtained was purified by recrystallization from ethanol.…”

Section: Methodsmentioning

confidence: 99%

“…These complexes showed dissociation and association of the ligands which prevent kinetics and formal potential of their electrode reactions from being suitable for the active material. In order to suppress this dissociation reaction, tetraketone ligands with two acetylacetone moieties have been studied and these ligands showed stable complexation with metal ions at III-VI valences [11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrolytic preparation, redox titration and stability of pentavalent state of uranyl tetraketonate in dimethyl sulfoxide

Shirasaki

Yamamura

Shiokawa

2006

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrolytic preparation, redox titration and stability of pentavalent state of uranyl tetraketonate in dimethyl sulfoxide

Shirasaki

Yamamura

Shiokawa

2006

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

“…Auranyl RFB,however, has not yet been built, since the uranyl complex tends to dissociate.Y amamura et al undertook further investigations to find more-stable ligands for the system. [266][267][268] As with the uranium system, ahigh efficiency in the use of neptunium compounds is expected. [241,242,269] An efficiencyo f about 99 %h as been estimated by means of electrochemical calculations.I ns uch ac ell, an eptunium complex would be present in the anolyte and ad ineptunyl complex with the transitions of Np 3+ to Np 4+ and NpO 2 2+ to NpO 2 + in the catholyte.A sar esult of the high radioactivity of Np,n o attempts have been made under electrolyte convection mode.…”

mentioning

confidence: 99%

The Chemistry of Redox‐Flow Batteries

et al. 2015

View full text Add to dashboard Cite

The development of various redox-flow batteries for the storage of fluctuating renewable energy has intensified in recent years because of their peculiar ability to be scaled separately in terms of energy and power, and therefore potentially to reduce the costs of energy storage. This has resulted in a considerable increase in the number of publications on redox-flow batteries. This was a motivation to present a comprehensive and critical overview of the features of this type of batteries, focusing mainly on the chemistry of electrolytes and introducing a thorough systematic classification to reveal their potential for future development.

show abstract

“…22 The second group of compounds are ligand-modified ions, which may be dissolved in aqueous or organic solvents. 22,65,178,[180][181][182] For example, additional capacity has been reported from the ligands of a vanadium complex. 180 More complex organic redox compounds can be modified by chemical functionalization to optimize both the redox potential and solubility.…”

Section: Active Materialsmentioning

confidence: 99%

Review Article: Flow battery systems with solid electroactive materials

Koenig

2017

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

View full text Add to dashboard Cite

Energy storage is increasingly important for a diversity of applications. Batteries can be used to store solar or wind energy providing power when the Sun is not shining or wind speed is insufficient to meet power demands. For large scale energy storage, solutions that are both economically and environmentally friendly are limited. Flow batteries are a type of battery technology which is not as well-known as the types of batteries used for consumer electronics, but they provide potential opportunities for large scale energy storage. These batteries have electrochemical recharging capabilities without emissions as is the case for other rechargeable battery technologies; however, with flow batteries, the power and energy are decoupled which is more similar to the operation of fuel cells. This decoupling provides the flexibility of independently designing the power output unit and energy storage unit, which can provide cost and time advantages and simplify future upgrades to the battery systems. One major challenge of the existing commercial flow battery technologies is their limited energy density due to the solubility limits of the electroactive species. Improvements to the energy density of flow batteries would reduce their installed footprint, transportation costs, and installation costs and may open up new applications. This review will discuss the background, current progress, and future directions of one unique class of flow batteries that attempt to improve on the energy density of flow batteries by switching to solid electroactive materials, rather than dissolved redox compounds, to provide the electrochemical energy storage.

show abstract

Characterization of tetraketone ligands for active materials of all-uranium redox flow battery

Cited by 25 publications

References 13 publications

Electrolytic preparation, redox titration and stability of pentavalent state of uranyl tetraketonate in dimethyl sulfoxide

Electrolytic preparation, redox titration and stability of pentavalent state of uranyl tetraketonate in dimethyl sulfoxide

The Chemistry of Redox‐Flow Batteries

Review Article: Flow battery systems with solid electroactive materials

Contact Info

Product

Resources

About