Concept

Batterie redox vanadium

Publications associées (190)

Silicon protected with atomic layer deposited TiO2: conducting versus tunnelling through TiO2

The present work demonstrates that tuning the donor density of protective TiO2 layers on a photocathode has dramatic consequences for electronic conduction through TiO2 with implications for the stabilization of oxidation-sensitive catalysts on the surface ...

Royal Soc Chemistry2013

Notable catalytic activity of oxygen-vacancy-rich WO2.72 nanorod bundles as counter electrodes for dye-sensitized solar cells

Ulf Anders Hagfeldt, Hong Zhang, Liang Wang

For the 1st time, nonstoichiometric WO2.72 was used as a counter electrode (CE) in dye-sensitized solar cells (DSSCs). O-vacancy-rich WO2.72 nanorod bundles with notable catalytic activity for triiodide and thiolate redn. were prepd. The photovoltaic param ...

2013

Improved redox couple for electrochemical and optoelectronic devices

Michael Graetzel, Mohammad Khaja Nazeeruddin, Jun Ho Yum, Aswani Yella, Hoi Nok Tsao

The present invention provides an improved redox couple for electrochemical and optoelectronic devices. The redox couple is based on a complex of a first row transition metal, said complex containing at least one mono-, bi-, or tridentate ligand comprising ...

2012

A Review of RedOx Cycling of Solid Oxide Fuel Cells Anode

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes, Amédée Zryd

Abstract: Solid oxide fuel cells are able to convert fuels, including hydrocarbons, to electricity with an unbeatable efficiency even for small systems. One of the main limitations for long-term utilization is the reduction-oxidation cycling (RedOx cycles) ...

2012

Hole-conducting mediator for stable Sb2S3-sensitized photoelectrochemical solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Yonghui Lee

Iodide redox (3I(-)/I-3(-)), polysulfide redox (S2-/S-x(2-)), organic redox [TMTU/TMFDS2+: tetramethylthiourea/tetramethylformaminium-bis(trifluoromethanesulfonyl) imide], ferrocene redox (Fc/Fc(+)), nickel redox [Ni(II)/Ni(III)], and cobalt redox [Co(II)/ ...

Royal Society of Chemistry2012

Recent developments in redox electrolytes for dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Carole Graetzel, Mingkui Wang

Redox electrolytes have proven to be extremely important in determining the performance of dye-sensitized solar cells (DSCs). The design and understanding of the redox couple, especially iodide free systems, has become a recent focus of DSC electrolyte res ...

Royal Society of Chemistry2012

High Performance Hydrogen/Bromine Redox Flow Battery for Grid-Scale Energy Storage

Sophia Haussener

The electrochemical behavior of a promising hydrogen/bromine redox flow battery is investigated for grid-scale energy-storage application with some of the best redox-flow-battery performance results to date, including a peak power of 1.4 W/cm(2) and a 91% ...

Electrochemical Society2012

High-performance phosphide/carbon counter electrode for both iodide and organic redox couples in dye-sensitized solar cells

Ulf Anders Hagfeldt, Zaiwei Wang, Liang Wang

Mo phosphide (MoP), Ni phosphide (Ni5P4), and C-supported Ni5P4 (Ni5P4/C) were proposed for use as counter electrode (CE) catalysts in dye-sensitized solar cells (DSCs) for the regeneration of both the conventional I3-/I- redox couple and a new org. T2/T- ...

2012

Using polymer templated nanoporous materials to improve performance in electrochemical pseudocapacitors and batteries

Raffaella Buonsanti, Xinyi Chen

Block-copolymer templating of inorg. frameworks provides a powerful route to produce periodic nanoporous materials with well-defined nanoscale architectures, controlled porosity, and high surface area. Such control is important for batteries and pseudocapa ...

American Chemical Society2012

Development of an organic redox couple and organic dyes for aqueous dye-sensitized solar cells

Nikolaos Vlachopoulos, Ulf Anders Hagfeldt

A water-sol. org. redox couple (TT-/DTT) and new org. dyes (D45 and D51) have been developed for aq. dye-sensitized solar cells (DSCs). An optimal efficiency of 3.5% was obtained using the D51 dye and an optimized electrolyte compn. The highest IPCE value ...

2012

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