摘要:
Methods of forming a platinum deposit on a nonconductive substrate are diosed, comprising the steps of hydrophobically treating a carbon black powder, forming a solution of chloroplatinic acid, suspending the hydrophobically treated carbon black powder in the chloroplatinic acid, immersing a nonconductive substrate in the chloroplatinic acid and adding formaldehyde to said chloroplatinic acid. The hydrophobically carbon black powder suspended in the chloroplatinic acid catalyzes and drives the reduction of platinum within the chloroplatinic acid toward the nonconductive substrate and reduces the chloroplatinic acid forming metallic platinum on the nonconductive substrate. In a preferred embodiment, a platinum deposit is formed on a glass substrate immersed in the chloroplatinic acid and the step of hydrophobically treating the carbon black powder is accomplished by adding a CF.sub.4 gas plasma to the carbon black powder.
摘要:
A method is provided of increasing the dielectric breakdown strength of tmoplastic films such as thin films of polypropylene obtained from polypropylene resin powder. The method involves melt extruding the resin powder with a small amount of ceresine wax.
摘要:
A porous carbon black or manganese dioxide cathode, or a lithium, magnesi calcium, zinc, or cadmium anode, is treated under vacuum with a gas plasma. The treated electrode is suitable for inclusion in a nonaqueous electrolyte cell and improves cell performance.
摘要:
A polymer film having a conductivity gradient across its thickness is maderom a mixed solution of an insulating polymer, A and a polymer, B that can be made conducting by doping or protonation by a method including the steps of:(A) mixing the solution of the insulating polymer, A and the polymer, B that can be made conducting by doping or protonation,(B) casting the mixed solution together as a solid composite film, and(C) exposing the film to a treating agent that can dope or protonate polymer B and make polymer B conductive and create a conductivity gradient across the thickness of the polymer films.
摘要:
The electrical breakdown strength of capacitors is increased by briefly esing the dielectric, the metal foil, and/or the fully assembled capacitor to a low pressure, low temperature gas plasma.
摘要:
Solid materials are easily washed with liquified gas by placing the solid terial to be washed in a dry vessel under an inert atmosphere, evacuating the vessel, introducing the low temperature liquified gas solvent into the vessel, allowing the washing of the solid by the liquified gas solvent, and removing the solvent by the application of vacuum.
摘要:
An improved electrolyte is provided in a lithium/sulfur dioxide rechargea cell, the electrolyte comprising a solution of a stable, highly conductive liquid electrolyte complex LiAlCl.sub.4 --3SO.sub.2 and up to about 50 percent by weight of sulfuryl chloride as a cosolvent.
摘要:
A porous carbon black cathode is treated by brief exposure to a low press, room temperature gas plasma. The treated cathode is suitable for inclusion in a lithium based, nonaqueous electrolyte cell.