After the contacting step is completed the solution is electrochemically oxidized with resultant release of oxygen which is recovered.
Say rH2 is about 28 at the start of electrolysis; when at the cathode, rH2 goes down to 0, then at the anode, the rO2 = -log[O2] also becomes 0, thanks to the release of oxygen (where oxygen activity is unitary, [O2] = 1).
This is the upper limit of thermodynamic stability of water with oxygen release.
The invention also concerns an electroplating process comprising the step of anodically evolving oxygen on the surface of said electrode.
A bifunctional air electrode for a rechargeable metal-air cell is made with water soluble oxygen reduction and oxygen evolution catalyst precursors.
Two O:* give rise to an O2 molecule, whereby gaseous oxygen is released.
In a further aspect the bifunctional catalyst is catalytically active for oxygen reduction and oxygen evolution reactions.
At this value, gaseous oxygen O2 is released, but especially, highly reactive atomic oxygen O is formed: what used to be called « nascent oxygen ».
The separator is equipped with an oxygen-fed gas-diffusion cathode and with an anode activated with a catalyst for oxygen evolution.
The method of the invention is particularly useful for reactivating anodes for oxygen evolution as it permits to avoid the risky procedure of detaching the anode from the current conductor.
The invention relates to a coating for anodes suitable for oxygen evolution in electrochemical processes, comprising one or more catalytic layers and an external layer.
The invention discloses a supported catalyst for SPE electrolyser applications, in which the catalyst has a support carrying nanoparticles as oxygen evolution catalysts.
The cathode (12) is mixed with graphite or other conductive carbon and a binder, and is contained by a metallic screen (22) which also serves as an oxygen evolution catalyst.
An iridium-doped or lead-doped ruthenium oxide material can perform as an oxygen evolution catalyst and can be fabricated into electrodes for electrolysis cells.
An electrode, e.g. an oxygen-evolving anode, is produced by either fixing the catalytic particles to an electrode base, e.g. lead, or by consolidating the catalytic particles into a porous electrode body.
The oxygen evolution catalyst may be uniformly applied within the cathode catalyst layer, or non-uniformly applied to identified high corrosion areas (82) (84) of the cathode catalyst layer (24).
Compositions include polypeptides conjugated to or complexed with a bioactive compound, wherein the polypeptide is capable of binding to an OEC or a circulating progenitor thereof.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Traduction Translation Traducción Übersetzung Tradução Traduzione Traducere Vertaling Tłumaczenie Mετάφραση Oversættelse Översättning Käännös Aistriúchán Traduzzjoni Prevajanje Vertimas Tõlge Preklad Fordítás Tulkojumi Превод Překlad Prijevod 翻訳 번역 翻译 Перевод