摘要:
An electric device comprises a gelled acid electrolyte (142A) in complex with a lanthanide that forms a redox pair with a second element. Preferred electric devices include batteries and especially primary batteries, while preferred acid electrolytes (124A) have a sulfonic acid group. Contemplated lanthanides especially include cerium, and preferred second elements particularly include zinc. Alternatively, contemplated electric devices may comprise a gelled electrolyte (142A) in which with a lanthanide forms a redox pair with zinc.
摘要:
A paste-like active material mixture prepared by mixing an active material powder and a particulate material comprising a polymer soluble in a nonaqueous electrolytic solution is applied to, e.g. collectors 1c and 2c to a uniform thickness, and then dried to form positive and negative electrodes 1, 2 containing an active material powder and a particulate polymer. The two electrodes are assembled into an electrode laminate into which the foregoing electrolytic solution is then injected.
摘要:
A flat, flexible electrochemical cell is provided. The within invention describes various aspects of the flat, flexible electrochemical cell. A printed anode is provided that obviates the need for a discrete anode current collector, thereby reducing the size of the battery. An advantageous electrolyte is provided that enables the use of a metallic cathode current collector, thereby improving the performance of the battery. Printable gelled electrolytes and separators are provided, enabling the construction of both co-facial and co-planar batteries. Cell contacts are provided that reduce the potential for electrolyte creepage in the flat, flexible electrochemical cells of the within invention.
摘要:
A gel electrolyte secondary cell in which discharge capacity loss can be suppressed even with the use of a graphitized carbonaceous material of a small particle size as a negative electrode material to assure low impedance, superior cell voltage and load characteristics and high charging/discharging efficiency. To this end, a graphitized carbonaceous material prepared by firing meso-carbon micro-beads is used as a material for a negative electrode 9.
摘要:
A gelatinizer for alkaline batteries, which comprises crosslinked polymer particles (A) comprising, as one or more main constituting monomer units, (meth) acrylic acid and/or an alkali metal salt thereof having an average particle size of 0.1 to 2,000 nullm, and a super fine particle form metal oxide (1) having an average particle size of 0.1 to 100 nm; and an alkaline battery using the gelatinizer. The impact resistance of the battery, the discharge characteristic thereof, the lifespan thereof, and others are very good. The present invention can make the time for producing alkaline batteries short, and is useful for producing batteries containing none of materials harmful to the human body, such as benzene.
摘要:
A bipolar battery comprises a bipolar electrode in which a positive electrode is provided on one surface of a collector and a negative electrode is provided on the other surface of the collector, a gel electrolyte sandwiched between the positive electrode and the negative electrode, and a sealing layer which is provided between the collectors and surrounds a periphery of a single cell including the positive electrode, the negative electrode, and the gel electrolyte.
摘要:
A polymer gel electrolyte includes an electrolyte solution composed of a plasticizer with at least two carbonate structures on the molecule and an electrolyte salt, in combination with a matrix polymer. Secondary batteries made with the polymer gel electrolyte can operate at a high capacitance and a high current, have a broad service temperature range and a high level of safety, and are thus particularly well-suited for use in such applications as lithium secondary cells and lithium ion secondary cells. Electrical double-layer capacitors made with the polymer gel electrolyte have a high output voltage, a large output current, a broad service temperature range and excellent safety.
摘要:
A lithium cell, having positive and negative electrodes capable of occluding and releasing lithium and a non-aqueous electrolyte. The cell of the present invention includes a positive electrode, a negative electrode and a gelated electrolyte composed of a polyacrylonitrile containing high molecular material, a null-caprolactone containing non-aqueous solvent and an electrolyte salt mainly comprised of LiPF6, with the content of null-caprolactone in the gelated electrolyte being 30 mol % or less. With the gelated electrolyte composed of the polyacrylonitrile containing high molecular material, non-aqueous solvent and the electrolyte salt mainly composed of LiPF6, a carbide film is formed on the electrode surface, on contact with the flame, as a result of the carbonization of the high molecular material and the carbonization accelerating operation of LiPF6. This carbide film inhibits inflammation for realizing superior combustion retardant properties.
摘要:
A gel electrolyte in which nonaqueous electrolytic solution having a lithium-containing electrolyte salt dissolved in a nonaqueous solvent is gelled by a matrix polymer. The gel electrolyte includes a halogen substituted ethylene carbonate obtained by replacing one or more hydrogen atoms of ethylene carbonate by halogens. Since the halogen substituted ethylene carbonate (for instance, fluorinated ethylene carbonate) is extremely low in its reactivity with a negative electrode, a loss capacity is small so that it is very effective for obtaining a high capacity. Further, the halogen substituted ethylene carbonate has a melting point lower than that of ethylene carbonate, it can realize a large capacity with less deterioration of a low temperature performance than that of ethylene carbonate. Accordingly, a strength, a liquid retaining characteristic, a stability relative to the negative electrode, a battery capacity, a cyclic characteristic a load characteristic and a low temperature characteristic can be improved.
摘要:
An anhydrous inorganic gel-polymer electrolyte is prepared using a non-aqueous sol-gel process. The inorganic gel-polymer is prepared by reacting a metal halide (SiCl4) and an alcohol (tert-butyl alcohol) in a diluent solution containing a lithium salt (lithium bisperfluoroethanesulfonimide) and at least one carbonate. The resulting porous silicon oxide network encapsulates the liquid electrolyte. The gel polymer electrolyte can serve as both a separator and an electrolyte in a Li-ion cell. The material is stable and has demonstrated minimal flammability. Lithium-ion electrochemical cells made with the inorganic gel-polymer electrolyte function similarly to Li-ion cells made with a liquid electrolyte. The cells have low capacity fade, 0.69%, and low irreversible capacity, 7.6%.