Abstract:
Liquid detection devices and perspiration-activated materials powered by liquid-activated hydrogel batteries are disclosed. A liquid detection device and a perspiration-activated material may be powered by a liquid-activated hydrogel battery comprising hydrogel permeated with electrolyte and an anode and a cathode in contact with the hydrogel. The hydrogel may become hydrated responsive to contact with a liquid, supporting ionic communication between the anode and the cathode via the electrolyte. The ionic communication may generate a voltage operative to power the liquid detection device or the perspiration-activated material connected thereto. The liquid detection device may operate to detect a liquid in contact therewith when powered by the hydrated liquid- activated hydrogel battery and to generate a detection event responsive to detecting the liquid. The perspiration-activated material may operate to evaporate and to eliminate odor associated with perspiration in contact therewith.
Abstract:
The present invention relates to an electrolyte, comprising a composite of a plastic crystal matrix electrolyte doped with ionic salts and a cross-linked polymer structure. The present invention also relates to a method for preparing the electrolyte. The electrolyte uses plastic crystals to achieve superior ionic conductivity appropriate for a liquid electrolyte, and uses the cross-linked polymer structure to achieve mechanical strength appropriate for a solid electrolyte. In addition, the method for preparing the electrolyte according to the present invention does not necessarily require a solvent, thus simplifying preparation processes. The electrolyte of the present invention has both superior ionic conductivity and mechanical strength, and therefore is suitable for a cable-type battery which is easy to transform.
Abstract:
A primary cell having an anode comprising lithium or lithium alloy and a cathode comprising iron disulfide (FeS 2 ) and carbon particles. The electrolyte comprises a lithium salt dissolved in an organic solvent mixture. The electrolyte contains between about 100 and 2000 parts by weight water per million parts by weight (ppm) electrolyte therein. The electrolyte may contain between about 200 and 2000, or between about 500 and 2000 parts by weight water per million parts by weight electrolyte. A cathode slurry is prepared comprising iron disulfide powder, carbon, binder, and a liquid solvent. The mixture is coated onto a conductive substrate and solvent evaporated leaving a dry cathode coating on the substrate. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.
Abstract:
Improved electrolytes for application in electrical storage devices, such as batteries and capacitors, electrochromic display and other applications requiring ionically conductive median are disclosed. The electrolytes of the invention contain organic cation salts, also called ionic liquids or molten salts. These improved electrolytes have useful characteristics such as high thermal stability and reduced flammability.
Abstract:
The present invention relates to the electrochemistry of conjugated polymers (10, 14) in ionic liquids (18) and the development and fabrication of long-lived, highly stable conjugated polymer electrochemical devices by using ionic liquids (18) as electrolytes. More specifically, the invention relates to the use of ionic liquids (18) as electrolytes for the fabrication of long-lived, highly stable elecrochemical actuators, electrochemical capacitors and electrochemical batteries having conjugated polymers (10, 14) as active electrodes as well as for the fabricatin of long-lived, highly stable electrochromic devices with polyaniline and polythiophene as coloration materials.
Abstract:
A polymer gel electrolyte comprising a metal salt, a polymer, optionally a plasticizer, characterised in that the polymer comprises a carbon-hydrogen base chain having at least two reactive groups incorporated wherein the reactive groups have different reactivities. The polymer gel electrolyte neutralises a passivating layer in the form of waste products produced in the electrolyte phase by the metal salt and solvents. The decrease in the growth of the passivating layer provides a battery cell with a better effect and a longer life.