172 results about "Anode potential" patented technology

The disclosed embodiments provide a system that manages use of a battery in a portable electronic device. During operation, the system uses a reference electrode in the battery to monitor an anode potential of an anode in the battery during charging of the battery in the portable electronic device. If the anode potential falls below an anode potential threshold, the system modifies a charging technique for the battery to extend a cycle life of the battery. For example, the system may reduce a charge current of the battery if the anode potential falls below the anode potential threshold to prevent degradation caused by a negative anode potential during charging of the battery.

A semiconductor device having a configuration hardly generating variations in the current value due to a deteriorated EL element is to be provided. A capacitance element is disposed between the gate and the source of a driving TFT, video signals are inputted to the gate electrode, and then it is in the floating state. At this time, when the gate-source voltage of the driving TFT exceeds the threshold, the driving TFT is turned on. Suppose an EL element is deteriorated and the anode potential rises, that is, the source potential of the driving TFT rises, the potential of the gate electrode of the driving TFT, being in the floating state by coupling of the capacitance element, is to rise by the same amount. Accordingly, even when the anode potential rises due to the deteriorated EL element, the rise is added to the gate electrode potential as it is, and the gate-source voltage of the driving TFT is allowed to be constant.

The present disclosure relates to prelithiated Si electrodes, methods of prelithiating Si electrodes, and use of prelithiated electrodes in electrochemical devices are described. There are several characteristics of electrode prelithiation that enable the superior battery performance. First, a prelithiated silicon anode is already in its expanded state during SEI formation, and therefore less of the SEI layer breaks down and reforms during cycling. Second, the prelithiated anode has a lower anode potential, which may also help the cycle performance of an electrochemical device.

The invention provides an electrochemical wastewater treatment method for removing salts and refractory organic matters synchronously and is mainly applied to wastewater containing low-concentration salts and low-concentration refractory organic matters. According to the method, the salts are removed under the electro-adsorption effect of a high-specific-surface-area material on negative and positive ions, and the refractory organic matters are oxidized and removed through control on cathode and anode potential to generate reactive oxygen components and reactive chlorine components. According to the method, characteristics of electro-adsorption salt removal and electrochemical oxidation methods are combined, a cathode and an anode are fully utilized, the efficiency for removal of the salts and the refractory organic matters is high, and the removal cost is low.

The present invention discloses a pixel circuit and a driving method thereof, a display panel and a display device. The pixel circuit comprises a reset module, a data writing-in module, a drive module, a first light-emitting control module, a second light-emitting control module, an anode potential control module, a capacitive module and a light-emitting device. Through cooperative work of the modules mentioned above, the pixel circuit drives the light-emitting device to emit light, and the second light-emitting control module supplies a voltage of an output end of the drive module to an anodeof the light-emitting device in a light-emitting stage; and the anode potential control module supplies signals of a first voltage signal terminal to the anode of the light-emitting device in a non-light-emitting stage to allow the bias voltage of the light-emitting device in the non-light-emitting stage to be opposite to the bias voltage of the light-emitting device in the light-emitting stage so as to improve the light-emitting efficiency and the service life of the light-emitting device.

The present invention utilizes the marriage of photocatalytic degradation and electrochemical oxidation to provide wastewater remediation and water purification based on the use of bifunctional electrodes. The bifunctional electrode provides for combined photocatalytic and electrochemical wastewater remediation for removing any one or combination of organic chemical pollutants, inorganic chemical pollutants and microorganisms. The electrode includes an electronically conducting substrate having a photocatalyst applied to a portion of the surface, the photocatalyst having a bandgap energy (E_g), and an electrocatalyst applied to another portion of the surface. Under illumination the photocatalyst produces electron-hole pairs which are separated by an anodic bias potential applied across the photocatalyst. The same bias is applied across the electrocatalyst. The application of the anodic potential bias not only greatly enhances the performance of the photocatalyst for photooxidation of pollutants at the photocatalyst, but also effectively drives electrochemical oxidation of pollutants at the electrocatalyst surface.

The invention belongs to the technical field of soil restoration and discloses a device and method for removing polychlorinated biphenyl in bottom mud through a microorganism electrolytic tank. The microorganism electrolytic tank is established, hybrid electrochemical activity bacteria and perchlorate domesticated bacteria are inoculated to an anode chamber, soil polluted by polychlorinated biphenyl is added, a nutrient solution is supplemented to the rest part, the water phase-bottom mud anode chamber is formed, anode potential is controlled to be kept constant through an electrochemical work station, growth and propagation of the hybrid electrochemical activity bacteria and the perchlorate domesticated bacteria can be promoted, dechloridation efficiency can be greatly improved, and constant bioelectric currents can be generated. By the adoption of the device and method, natural restoration and toxicity reduction can be conducted on the polluted soil, and good environmental protection benefits are achieved.

A method for preparing metallic electrode with nano-pore structure by electrochemical alloying/dealloying process is provided. The method comprises: firstly adding a zinc salt into an organic solvent and heating to allow dissolution; then inserting a metallic electrode as working electrode, a zinc sheet as auxiliary electrode and an inert metal as reference electrode; electrochemically applying a circulatory potential scanning, wherein a Zn coating is formed on the surface of Au substrate during cathode potential scanning, and the deposited Zn reacts with Au substrate to form Zn-Au alloy with the solution temperature rise during the electrogalvanizing; and finally dissolving Zn from the alloy by the anode potential scanning and dealloying. The method can produce the metallic electrode with nano-pore structure, which has extremely-high roughness after treatment, substantially increase the effective response area of metallic electrode, and greatly improve the sensitivity and catalytic efficiency of metallic electrode in application. The invention has the advantages of simple operation, easily-accessible raw material, low cost, no toxicity, and no environmental pollution; and is used in analysis, catalysis and sensor fields.

In a semiconductor device of the present invention, a protection diode for protecting a device is formed on an epitaxial layer formed on a substrate. A Schottky barrier metal layer is formed on a surface of the epitaxial layer and a P-type diffusion layer is formed at a lower portion of an end portion of the Schottky barrier metal layer. Then, P-type diffusion layers are formed in a floating state closer to a cathode region side than the P-type diffusion layer, and are capacitively coupled with a metal layer to which an anode potential is applied. This structure reduces a large change in a curvature of a depletion layer, thereby improving a withstand voltage characteristic of the protection diode.

A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current I₀ and a lowest anode potential η of the lithium ion battery at which no lithium precipitation occurs; 2) charging the lithium ion battery at a constant current of I₁ which is greater than I₀ for a charging time t₁; 3) discharging the lithium ion battery at a constant current of I₂ which is less than I₀ for a discharging time t₂, 5≦t₁/t₂≦50; 4) repeating steps 2) and 3) until a cutoff voltage of the lithium ion battery reaches V₀ and standing the lithium ion battery for a standing time t₃; and 5) charging the lithium ion battery at a constant current of I₀ until the cutoff voltage of the lithium ion battery reaches V₀ and charging the lithium ion battery to a cutoff current of I₃ at a constant voltage.

The present invention provides a solid-state electrolyte battery using a cathode activating substance which functions as such in an amorphous state and has a high ionic conductivity and provides a cathode activating substance used for the same. This solid-state electrolyte battery includes a laminated body. In the laminated body, a cathode-side current collector film, cathode activating substance film, solid-state electrolyte film, anode potential formation layer and anode-side current collector film are stacked above a substrate in this order. The cathode activating substance film is made of Li_xM_yPO_4−zN_z, i.e., a lithium complex oxide in an amorphous state.

The present invention relates to an electrocatalytic coating and an electrode having the coating thereon, wherein the coating is a mixed metal oxide coating, preferably platinum group metal oxides with or without valve metal oxides, and containing a transition metal component such as palladium, rhodium or cobalt. The electrocatalytic coating can be used especially as an anode component of an electrolysis cell for the electrolysis of a halogen-containing solution wherein the palladium component reduces the operating potential of the anode and eliminates the necessity of a “break-in” period to obtain the lowest anode potential.

The invention belongs to the electrostatic discharge protection field of an integrated circuit and especially provides a low trigger voltage SCR structure based on floating trap trigger used for ESD protection. And the structure is used for further reducing a trigger voltage of a LVTSCR device. Through an internal structure design, one floating trap structure is introduced into the device. The floating trap structure is equivalent to one diode structure, an anode is connected to a polycrystalline silicon grid electrode of a PMOS and a cathode is connected to an anode of a SCR. When an ESD pulse is coming, a potential of a floating trap is lower than an anode potential of a SCR device. A potential difference between the two is enough to make the PMOS be started. After a P channel MOSFET is started, a parasitic NPN transistor in the SCR device is triggered to be started, then a parasitic PNP transistor is triggered to be started, and finally the SCR device starts and discharges an ESD current. Therefore, a trigger voltage of the device is determined by the floating trap structure and a parasitic PMOS grid source capacitor so that a purpose of reducing a SCR device trigger voltage can be realized and the trigger voltage can be modulated.

The invention relates to a titanium-based composite anode for manganese electrolysis and a preparation method of the titanium-based composite anode. According to the invention, a titanium wire mesh is used as a framework, and the titanium wire mesh is combined with titanium foam to form titanium wire mesh reinforced foamed titanium to be used as a base body, the surface of the base is coated with one or more precious metallic oxide layers, and then a manganese dioxide layer is coated through pre-electrolysis, so that composite anode is obtained. According to the invention, the preparation process is simple, the prepared titanium-based composite anode solves the difficult problems of a traditional lead silver alloy anode that the anode potential is high and an anode by-product contains lead and is hard to use repeatedly, in addition, the problem that a traditional titanium-based modified anode is easily passivated in a manganese electrolysis system is also solved.

The invention belongs to the technical field of power semiconductors, and relates to a short-circuit anode SOI LIGBT (Lateral Insulated Gate Bipolar Transistor) with an anode pinch-off groove. Compared with the traditional short-circuit anode LIGBT, anode grooves connected with the anode potential are introduced at the anode end, a conductive material of the anode grooves comprises high-concentration P-type doping, and a low-concentration N-type doped region is introduced one side of each groove wall. When the device is turned off, the outer wall of each anode groove accumulates electrons, low-resistance channels are provided, the extractions of electrons in a drift region is accelerated, and the turn-off time and the turn-off loss are reduced. When the device is just turned on, a P-type impurity in the anode grooves enable the low-concentration N-type doped regions to be exhausted, the electrons are prevented from being extracted by the N+ anode, a voltage turning-back effect is eliminated, a conductivity modulation effect is enhanced at the same time, and the conduction voltage drop is reduced. The beneficial effects are that the short-circuit anode SOI LIGBT has high turn-off speed and lower loss compared with the traditional LIGBT; and the short-circuit anode SOI LIGBT eliminates the voltage turning-back phenomenon under a smaller transverse cell size compared with the traditional short-circuit anode LIGBT, and has lower conduction voltage drop at the same time.

The invention relates to a method for constructing an electro-catalytic bacterial biofilm at an anode of a microbial electrochemical reactor. The method comprises the following steps: firstly assembling the microbial electrochemical reactor and connecting with circuits, wherein the first path is formed by connecting a fixed resistor between the anode and a cathode in series, and the second path is formed by connecting a direct current stabilized power supply, an ampere meter, a variable resistor and a working contact of a cycle time relay between the anode and the cathode in series; then injecting a bacterial growth culture medium liquid into an anode chamber, inoculating a bacteria source, conducting the first path to carry out prestart on the microbial anode, measuring the anode potential change to obtain a polarization curve and determining an ultimate current value of the anode; and after electro-catalytic bacterial biofilm is stimulated by using ultimate pulse current to grow, successively obtaining a new ultimate current value again, then stimulating again under the new ultimate pulse current, repeating the steps till no significant growth of the ultimate current exists and finishing construction of the anodic electro-catalytic bacterial biofilm. The electro-catalytic bacterial biofilm can stably run under relatively high working current.

A field emission display (FED) having a correction system with a correction coefficient derived from emission current is presented. Within one embodiment in accordance with the present invention, a field emission display has an anode at the faceplate and a focus structure. The anode potential is held at ground while the focus structure potential is held between, but is not limited to, 40 and 50 volts. The current flowing to the focus structure is measured and used as the basis for the correction coefficient for the field emission display.

The invention designs a method which can change the appearance of the carbon nanotubes and the surface functional groups through electrooxidation to improve the chemical activity. By adopting the organic supporting membrane, the carbon nanotubes are prepared into membrane with thickness of 0.2mm to 5mm, which is connected with platinum wire as anode; a platinum sheet is used as cathode; chloride solution is used as electrolytic solution; a potentiostat is used to control the open potential in 1.50V to 2.5V (relative to saturated calomel electrode) to carry out constant potential electrolysis in three-electrode electrolytic cell. The electrolytic oxidation treatment process is controllable with low cost and light pollution. The invention has good purification effect on the carbon nanotubes and the chemical activity of the carbon nanotubes after oxidation treatment is obviously improved.

If a potential of a gate electrode of a driving transistor varies after a gray scale signal is inputted into each pixel, a current value of a current supplied to a light emitting element varies so that accurate gray scale display cannot be obtained. In particular, in the case of performing black display, current may flow, which makes clear black display difficult. Accordingly, the invention provides a light emitting device capable of performing accurate gray scale display, and a driving method thereof. According to the invention, a signal for display is inputted plural times within a predetermined timing period, or a writing operation period is lengthened. Consequently, the gate voltage of the transistor is determined after the anode potential of the light emitting element is stabilized, and therefore accurate gray scale display can be performed.