摘要:
A nickel alloy material for use as a cathode of an electrochemical charge storage device (10) provides significantly higher charge densities than available in prior art devices. The nickel alloy electrode (30) includes a host matrix material such as nickel, molybdenum, chromium, and combinations thereof, and at least one modifier element selected from the group consisting of cobalt, iron, aluminum, titanium, tungsten, vanadium, zirconium, niobium, and combinations thereof. The rechargeable electrode material may be incorporated into a charge storage device such as an electrochemical capacitor, and including an electrode fabricated of the material (30), an anode (20), and an electrolyte (40) disposed therebetween.
摘要:
An electrochemical charge storage device (20) having a voltage discharge profile which is constant for a substantial period of the discharge cycle, which then drops off sharply to full discharge, in a manner more often associated with a battery discharge profile. The electrochemical charge storage device is further characterized by a discharge rate in excess of at least 100 C., and as much as 7000 C. Accordingly, the electrochemical charge storage device is characterized by a battery discharge voltage profile which occurs at substantially capacitor discharge rates.
摘要:
A material for use as an electrode, and particularly the cathode (30) of an electrochemical device, such as a pseudocapacitive device (10). The material is a substantially amorphous material having a host matrix material selected from the group of cobalt, nickel, iron, and combinations, and a modifier element or elements selected from the group of boron, phosphorous, carbon, silicon, aluminum, manganese, copper, chromium, vanadium, titanium, molybdenum, zirconium, tungsten, and combinations thereof.
摘要:
A stack for a bistable microelectronic switch. A porphyrin compound and a conductive polymer are sandwiched between two electrodes. The device exhibits a switching behavior at a certain voltage and can be used in arrays to form a memory device. When a first voltage is applied between the electrodes, the resistance across the two electrodes is very high, and when a increased voltage is applied, the resistance is generally two orders of magnitude lower. Copper phthalocyanine or 5,10,15,20-tetrakis(4-methoxyphenyl)-21H,23H-porphine cobalt(II) can be used as the bistable compound, and poly-(3,4-ethylenedioxythiophene) and poly-(styrenesulphonic acid) can be used as the conductive polymer.
摘要:
A stack for a bistable microelectronic switch is fabricated by providing a first metal electrode on a supporting substrate. A bistable macrocyclic compound is printed over the first electrode using a high speed printing process. A conductive polymer is then printed over the bistable macrocyclic compound using a high speed printing process, and a second electrode is then formed on the conductive polymer. Copper phthalocyanine is one bistable compound, and a combination of poly-(3,4-ethylenedioxythiophene) and poly-(styrenesulphonic acid) is the conductive polymer. The upper and lower electrodes are formed in a crossbar formation to create an addressable random access memory device. When a voltage less than a switching voltage is applied between two intersecting electrodes, the resistance is very high, and when a voltage greater than the switching voltage is applied, the resistance is generally two orders of magnitude lower.
摘要:
High power density electrochemical capacitors may be pretreated by immersing the electrodes therefore in an alkaline solution. Thereafter the immersed electrode are subjected to high power pulses for brief periods of time. The pretreatment process forms an activated oxide layer on the electrode surface. The resulting device is capable of delivering high current pulses with enhanced discharge voltage.
摘要:
A stack for a bistable microelectronic switch. A porphyrin compound and a conductive polymer are sandwiched between two electrodes. The device exhibits a switching behavior at a certain voltage and can be used in arrays to form a memory device. When a first voltage is applied between the electrodes, the resistance across the two electrodes is very high, and when a increased voltage is applied, the resistance is generally two orders of magnitude lower. Copper phthalocyanine or 5, 10, 15, 20-tetrakis(4-methoxyphenyl)-21H, 23H-porphine cobalt(II) can be used as the bistable compound, and poly-(3,4-ethylenedioxythiophene) and poly-(styrenesulphonic acid) can be used as the conductive polymer.
摘要:
Circuit boards (1100, 1500, 1600, 1700) and methods for fabricating circuit boards that include heaters for maintaining temperature sensitive components at an operating temperature are provided. Resistive traces (602, 702,704) are included in the circuit boards proximate temperature sensitive apparatus (1004, 1304, 1602, 1712). Thermally conductive patches (802, 902, 904) are interposed between the resistive traces and the temperature sensitive components. The thermally conductive patches establish zones of relatively uniform temperatures. According to a preferred embodiment of the invention the temperature sensitive apparatus comprises a fluid conduit (1004).
摘要:
An electrochemical cell is fabricated by providing two symmetric electrodes and a solid polymer electrolyte disposed therebetween. The symmetric electrodes, anode and cathode, are made from materials such as ruthenium, iridium, cobalt, zinc, bismuth, cadmium, silver, and oxides thereof. The solid polymer electrolyte is in intimate contact with both the anode and cathode, and is made from a polymeric support structure such as polyvinylalcohol, having dispersed therein a proton conducting electrolyte active species.
摘要:
Method for making high power electrochemical capacitors (28) provides for depositing an electrically polymer (18) and (20) onto a substrate (12) which has been treated so as to form nitride layers (14) and (16) on exposed surfaces thereof. Such electrochemical capacitors provide for high power high energy devices without the short comings of excessive equivalent series resistance nor the expense of noble metal substrates as have been typically been used.