摘要:
An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a multilayered first polymeric region 28, having second layers 30 and 32, of a second polymer material. The second layers may absorb an electrolyte active species and to adhere the adjacent layer of electrode material to the electrolyte 26. The electrolyte system further includes a process for packaging and curing the electrolyte after it has been incorporated into a discrete battery device.
摘要:
An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a multilayered first polymeric region 28, having second layers 30 and 32, of a second polymer material. The second layers may absorb an electrolyte active species and to adhere the adjacent layer of electrode material to the electrolyte 26. The electrolyte system further includes a process for packaging and curing the electrolyte after it has been incorporated into a discrete battery device.
摘要:
An electrochemical cell (10) includes first and second electrodes (12) and (14) with an electrolyte system (26) disposed therebetween. The electrolyte system includes a polymeric support structure through which is dispersed an electrolyte active species in an organic solvent. The solvent, which remains liquid to low temperatures, is a binary or higher order system comprising diethyl carbonate and one or more of propylene carbonate, ethylene carbonate, dimethyl carbonate, dipropylcarbonate, dimethylsulfoxide, acetonitrile, dimethoxyethane, tetrahydrofuran, n-methyl-2-pyrrolidone, and combinations thereof.
摘要:
An electrochemical cell (10) includes first and second electrodes (12) and (14) with an electrolyte system (26) disposed therebetween. The electrolyte system includes a polymeric support structure through which is dispersed an electrolyte active species in an organic solvent. The solvent, which remains liquid to low temperatures, is a binary or higher order system comprising diethyl carbonate and one or more of propylene carbonate, ethylene carbonate, dimethyl carbonate, dipropylcarbonate, dimethylsulfoxide, acetonitrile, dimethoxyethane, tetrahydrofuran, n-methyl-2-pyrrolidone, and combinations thereof.
摘要:
An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a first and second layer 28 and 30, the second layer 30 being used to absorb an electrolyte active species and to adhere the adjacent layer of electrode material to the electrolyte 26. The electrolyte system further includes a process for packaging and curing the electrolyte after it has been incorporated into a discrete battery device.
摘要:
An electrolyte system (40) for use in connection with an electrochemical cell (10). The cell (10) includes a positive electrode (20) and a negative electrode (30) with the electrolyte system (40) disposed therebetween. The electrolyte system is a polymer gel electrolyte system including an electrolyte active species which may be either aqueous or non-aqueous and a polymer gel electrolyte support structure. The blended polymer gel electrolyte support structure includes at least a first phase adapted to absorb or otherwise engage the electrolyte active species disposed on and through the pores of a second phase which is substantially inert and does not absorb the electrolyte active species.
摘要:
Described is battery comprising a flexible pouch with two compartments wherein an electrochemical device is in the first compartment and the second compartment is empty. Channels for the conduction of gas connect the first and second compartments. When gases are formed during the initial charge and discharge cycles of the electrochemical device, the compartment containing the electrochemical device can be pressed on, driving the gas into the second, empty, compartment. The area between the two compartments can be sealed, and the second compartment cut off. This provides an easy, economical way of ridding an electrochemical device, such as a lithium-ion polymer cell of excess gases formed during the initial charge and discharge cycles.
摘要:
A package for a flat electrochemical device comprises a flexible circuit board. Building from a base layer (62), the flexible circuit board has a conductor layer disposed on the outermost side of the base layer providing a first and second contact portion (56 and 58), a cover coat layer (50) is disposed over the conductor layer and the base layer over the outermost side of the base layer, a first collector (64) is disposed on the first half (47) on the innermost side of the base layer, and a second collector (66) is disposed on the second half (48) on the innermost side of the base layer. The first collector is electrically connected to a runner by a first plated through-hole (70), and the second collector is electrically connected to the second contact portion through a second plated through-hole (72). And finally, a fringe portion (68) is provided by the base layer about the periphery of the first and second halves. Upon assembly, an electrochemical cell stack is place on one half of the circuit board, the other half is folded over the cell stack, and the fringe portion of the first half is sealed to the fringe portion of the second half.
摘要:
An electrochemical cell (10) including a positive electrode (20), a negative electrode (30) and a low temperature organic, liquid lithium salt electrolyte (40) is provided. The low temperature lithium salt electrolyte includes a central atom selected from the group of aluminum, boron, gallium, indium, or thallium and at least four substituent groups which are organic, alkoxy groups. A unique characteristic of the electrolyte is that it remains liquid at ambient temperatures, as compared to most lithium salt electrolytes which are solid at room temperatures.
摘要:
A method (80) of manufacturing an electrochemical cell having electrodes and a separator element is disclosed. The method comprises the steps of providing (81) a mixture consisting of either an electroactive or inert material and a polymeric binder, transferring (83) the mixture into a pressure vessel, introducing (85) a gas into the pressure vessel, adjusting (87) the pressure and temperature inside of the pressure vessel such that the gas reaches a critical point at which the gas behaves like a supercritical fluid, and spraying (89) the mixture onto at least one of the current collecting substrates, electrodes and/or the separator element.