Abstract:
A gel electrolyte produced through subjecting a polyether polymer which is prepared from an oxirane compound, has a polyethylene oxide and/or a polypropylene oxide structure in its main chain, and has a weight average molecular weight of 50,000 to 1,000,000, and a crosslinking agent, to a gelling reaction with a polymerization initiator and heat. The gel electrolyte is a polymer gel electrolyte having high performance capabilities, and thus allows efficient production of a cell, a capacitor and a photoelectric conversion element.
Abstract:
A clay gelling agent produces an aqueous alkaline anode gel (3) with suspended metal particulate. The combination of clay with other non-clay gelling agents can produce a superior gelled anode, suitable for use in alkaline electrochemical cells. Furthermore, the addition of at least one starch gelling agent to a clay-based anode gel, a carboxyvinyl-based (i.e. CARBOPOL) anode gel, or a carboxymethylcellulose anode gel can produce a battery with improved stability when the cell is dropped, otherwise shaken, or exposed to heat. The present gelling agents can also be used to gel electrolyte solutions that do not contain suspended metal particles.
Abstract:
Disclosed fluoro-olefins bearing an ionic functionality or a precursor thereto, a process for the production thereof, and polymers, especially ionomers, formed therefrom, and their application for electrochemical uses.
Abstract:
Disclosed fluoro-olefins bearing an ionic functionality or a precursor thereto, a process for the production thereof, and polymers, especially ionomers, formed therefrom, and their application for electrochemical uses.
Abstract:
An electrolytic solution, containing dissociated ions, is confined in pores of a porous body so as to reduce the size of the ions, including the solvate. As a result, the fluid resistance decreases, and the mobility of the ions becomes larger than the intrinsic mobility of the solutions, so that the transportation of ions can be more efficient.
Abstract:
Low mercury or mercury free primary or secondary alkaline manganese dioxide-zinc cell that comprises a manganese dioxide cathode with a manganese dioxide active material and a conductive powder. The active material and powder are uniformly mixed and pressed to form a porous cathode body. The cell further comprises a gelled zinc anode, a separator between the cathode and the anode, and an alkaline electrolyte. The anode gel comprises a modified starch as a gelling agent capable of releasing hydrogen gases developed during slow corrosion of zinc in the anode. A hydrogen recombination system can be used in the cell to limit inside pressure within permitted limits by recombining the evolved hydrogen.
Abstract:
A bulk ionically conductive polymer gel is prepared by dissolving a salt such as lithium trifluoromethanesulphonate (which would provide lithium ion conductors) in an organic compound such as N-formylpiperidine. The organic compound dissolves the salt at 20 DEG C but is not a solvent at 20 DEG C (though it is at 215 DEG C) for polyethylene terephthalate. The last-named is a crystallisable polymer which is added in a minor amount at a high temperature to the other components and provides the required mechanical rigidity for the product at lower temperatures.
Abstract:
An air cell whose nearly all the faces are opened comprises a casing (10) having a plurality of ventilation windows (13), a plurality of unit cells (30) contained in the casing (10), and an electrolyte jar (21) that is provided at the bottom of the casing (10) and that is charged with a water-absorbing material (50) which absorbs and holds an electrolyte. The air cell is light in weight, small size, and excellent power performance.
Abstract:
The non-stringy hydrogels of this invention are comprised of a homogeneous uniform mixture of water and at least one water-soluble high molecular weight polymer. Suitable mixtures may be derived from poly(ethylene oxide) and water or poly(vinyl pyrrolidone), a viscosity-enhancing hydrophilic polymer and water, and further, may optionally contain an effective amount of a water-soluble electrolyte to provide conductive non-stringy materials. These polymeric mixtures which are crosslinked by exposure to radiant energy provide gel-like solids which are sufficiently tacky and adhesive to adhere to the subjects' skin and yet are substantially non-stringy and non-aggressive such that contact with such hydrogels imparts less discomfort to the user. In addition, the consumer utilizing the products of this invention would not experience the objectionable sticky, stringy sensation associated with existing conductive adhesive gels.