摘要:
A porous gas-diffusion electrode having a ruthenium electrocatalyst is conditioned for operation as a hydrogen consuming anode by connecting the electrode as a cathode in a suitable electrolyte until it drops below the reversible hydrogen potential and evolves hydrogen. Preferably, the electrode is contacted with a hydrogen atmosphere prior to or at the beginning of hydrogen evolution, and conditioning may be carried out in situ in a cell in which the electrode is to operate as hydrogen consuming anode.
摘要:
A porous gas-diffusion electrode having a ruthenium electrocatalyst is conditioned for operation as a hydrogen consuming anode by connecting the electrode as a cathode in a suitable electrolyte until it drops below the reversible hydrogen potential and evolves hydrogen. Preferably, the electrode is contacted with a hydrogen atmosphere prior to or at the beginning of hydrogen evolution, and conditioning may be carried out in situ in a cell in which the electrode is to operate as hydrogen consuming anode.
摘要:
A self-supporting reticulate of titanium hydride (TiH 2 ) is formed by slurry-coating an open cell organic synthetic resinous material, or other pore-former, and eliminating the carbon-containing components of binder and/or solvent, viscosity modifiers, thickening agents, and the like at a temperature below about 400°C. In an analogous manner, an inorganic refractory material open cell substrate or other pore-former substrate may be slurry-coated and converted to a TiH 2 reticulate in which the substrate is coated with TiH 2 to yield a supported TiH 2 reticulate. Either the self-supporting TiH 2 reticulate, or the supported one, free of carbonaceous material, may be sintered to yield an essentially pure Ti (metal) reticulate which is essentially free of titanium carbide. Ti reticulates so formed are coated with Pt group metal oxides and used as anodes in chloralkali cells.
摘要:
A self-supporting reticulate of titanium hydride (TiH 2 ) is formed by slurry-coating an open cell organic synthetic resinous material, or other pore-former, and eliminating the carbon-containing components of binder and/or solvent, viscosity modifiers, thickening agents, and the like at a temperature below about 400°C. In an analogous manner, an inorganic refractory material open cell substrate or other pore-former substrate may be slurry-coated and converted to a TiH 2 reticulate in which the substrate is coated with TiH 2 to yield a supported TiH 2 reticulate. Either the self-supporting TiH 2 reticulate, or the supported one, free of carbonaceous material, may be sintered to yield an essentially pure Ti (metal) reticulate which is essentially free of titanium carbide. Ti reticulates so formed are coated with Pt group metal oxides and used as anodes in chloralkali cells.
摘要:
A gas-diffusion electrode cell having an electrolyte feed/withdrawal means integral to a frame for the electrode. The integral feed means for electrolyte feed/withdrawal allows a reduced spacing between the gas-diffusion electrode and a separator in the cell, resulting in a lower operational voltage for electrolysis operation.
摘要:
A reticulate primary electrode, usually cathode (36), and method for making for use in an electrochemical cell (10). The cathode (36) is openly porous, in substantial physical contact with a separator (16) used in the cell (10) for separating anode (22) and cathode compartment (24) within the cell (10), and intermetallically bound to a cathodic current collector (38) used within the cell (10).