Abstract: A charging method is proposed to include the steps of: in a first stage of charging, charging a battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value; and in a second stage of charging, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value which is greater than the first-stage voltage value. The second-stage current is smaller than the first-stage current.

Abstract: A redirection method and apparatus, and a system, where the method includes capturing, by a virtual machine running on a server, an interface invocation request initiated by an application program, encapsulating, by the virtual machine, a serialization result into a data packet, sending the data packet to a client device, where the serialization result is obtained after serialization of an interface name and an interface parameter included in the interface invocation request, reconstructing, by the client device based on the serialization result and the interface name that are included in the data packet, the interface invocation request, and accessing a human interface device based on the interface invocation request to implement redirection for the human interface device. Hence, the redirection method improves stability of a redirection process.

Abstract: An electrode sheet has a first end and a second end opposite each other, and includes a current collector, active materials disposed on a first coated zone and a second coated zone, and a plurality of electrode tabs. The current collector includes a side edge, opposing first and second surfaces. The first surface includes a first coated zone and a first uncoated zone, and the second surface includes a second coated zone. At the first end, the first coated zone and the second coated zone are flush. At the second end, the first coated zone is misaligned with the second coated zone. The sum of the length of the first coated zone and the length of the first uncoated zone is equal to the length of the second coated zone. Each electrode tab is coupled to the current collector and protrudes beyond the side edge.

Abstract: Provided are electrochemical cells and methods of manufacturing these cells. An electrochemical cell comprises a positive electrode and an electrolyte layer, printed over the positive electrode. In some examples, each of the positive electrode, electrolyte layer, and negative electrode comprises an ionic liquid enabling ionic transfer. The negative electrode comprises a negative active material layer (e.g., comprising zinc), printed over and directly interfacing the electrolyte layer. The negative electrode also comprises a negative current collector (e.g., copper foil) and a conductive pressure sensitive adhesive layer. The conductive pressure sensitive adhesive layer is disposed between and adhered to, directly interfaces, and provides electronic conductivity between the negative active material layer and the negative current collector. In some examples, the conductive pressure sensitive adhesive layer comprises carbon and/or metal particles (e.g., nickel, copper, indium, and/or silver).

Abstract: Electrochemical cells with a protective film that is permeable to hydrogen, or that include a catalyst that facilitates formation of mobile hydrogen species, that promotes sequestration or gettering of hydrogen or oxygen, and/or that facilitates conversion of hydrogen or oxygen to H2O, are disclosed.

Abstract: The present application relates to an electrochemical device. Specifically, the present application provides a cell, wherein the cell is formed by winding or stacking a first electrode and a second electrode which are arranged at an interval, and a separator is disposed between the first electrode and the second electrode. Wherein the first electrode includes a first current collector, and the first current collector includes a coated region coated with a first active material and an uncoated region without the first active material; the uncoated region is at least partially provided with an insulating layer. The adhesion between the insulating layer and the first current collector is not less than about 0.5 N/m. The electrochemical device provided by the present application has improved safety performance.

Abstract: The present application relates to an electrochemical device. Specifically, the present application provides an electrochemical device, including a cell and a shell enclosing the cell; the cell includes a jelly roll including a first electrode and a second electrode spaced from each other, a separator is disposed between the first electrode and the second electrode, the first electrode and the second electrode are wound to form the cell; the first electrode includes a first current collector, the first current collector includes a first surface and a second surface disposed oppositely; the first surface faces the shell, and includes a coated region coated with a first active material and an uncoated region; the uncoated region includes a first uncoated region disposed at an end of the jelly roll, and the first uncoated region includes alternating bent portions and straight portions; and the bent portions are provided with an insulating layer.

Abstract: The present application relates to an electrode sheet, a battery cell and a battery. The electrode sheet includes a current collector and a protective layer. The current collector includes a coated region provided with an active material layer and an uncoated region without being provided with the active material layer. The protective layer is provided on at least a part of a surface of the uncoated region, and has a porosity of 0% to 95%. For the electrode sheet according to the present application, by providing the current collector with the protective layer, the contact resistance may be increased when the electrode sheet is short-circuited, and the discharge power and the thermal runaway probability of the battery cell may be reduced when the battery cell is internally short-circuited, thereby improving the safety performance of the battery cell.

Abstract: An electrode assembly and a battery are disclosed. The electrode assembly includes a first current collector including a first section and a second section, a second current collector including a third section and a fourth section, and a first protective layer. An outer surface of the first section is provided with an active material layer, and none of an outer surface and an inner surface of the second section, an inner surface of the first section, an outer surface of the third section, and an inner surface of the fourth section is provided with the active material layer. The outer surface of the third section faces the inner surface of the first section and the inner surface of the second section, and the inner surface of the fourth section faces the outer surface of the second section.

Abstract: A charging method is proposed to include the steps of: in a first stage of charging, charging a battery with a first-stage current until a voltage of the battery reaches a first-stage voltage value; and in a second stage of charging, charging the battery with a second-stage current until the voltage of the battery reaches a second-stage voltage value which is greater than the first-stage voltage value. The second-stage current is smaller than the first-stage current.

Abstract: The disclosure relates, in some aspects, to compositions and methods for treating corneal disease (e.g., corneal neovascularization. In some embodiments, the disclosure relates to rAAV-mediated delivery of an cornea-associated transgene to a subject. In some embodiments, the rAAV transduces the corneal tissue of a subject.

Abstract: A redirection method and apparatus, and a system, where the method includes capturing, by a virtual machine running on a server, an interface invocation request initiated by an application program, encapsulating, by the virtual machine, a serialization result into a data packet, sending the data packet to a client device, where the serialization result is obtained after serialization of an interface name and an interface parameter included in the interface invocation request, reconstructing, by the client device based on the serialization result and the interface name that are included in the data packet, the interface invocation request, and accessing a human interface device based on the interface invocation request to implement redirection for the human interface device. Hence, the redirection method improves stability of a redirection process.

Abstract: A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current I0 and a lowest anode potential ? 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.

Abstract: The present disclosure provides a lithium-ion battery. The lithium-ion battery includes: a positive electrode plate including a positive current collector and a positive conductive membrane which is formed on the surface of the positive current collector; a negative electrode plate including a negative current collector and a negative conductive membrane which is formed on the surface of the negative current collector; a separator; an electrolyte; and a packaging foil. The compacted density of the positive conductive membrane is at a range from 3.9 g/cm3 to 4.4 g/cm3; the compacted density of negative conductive membrane is at a range from 1.55 g/cm3 to 1.8 g/cm3; the ratio of the capacity of the negative active material to the capacity of the positive active material is at a range from 1 to 1.4.

Abstract: Embodiments of the present application provide a method of battery charging, which relates to the field of battery charging and is capable of effectively improving safety performance of the battery. The method includes: obtaining an anode open circuit voltage curve, an anode impedance curve, a lithium deposition potential threshold and a state of charge, corresponding to a battery; determining a current anode open circuit voltage according to the anode open circuit voltage curve and the state of charge; determining a current anode impedance according to the anode impedance curve and the state of charge; determining a current charging current according to the current anode open circuit voltage, the current anode impedance and the lithium deposition potential threshold; and charging the battery according to the current charging current. Embodiments of the present application are applicable to a rapid battery charging process.

Abstract: Provided are a device and method for measuring mechanical properties of a cell, the device including: a substrate layer (2); and a nanowire layer (1) arranged on the substrate layer (2) and including a nanowire array, nanowires (11) in the array are configured to emit an light signal, and in response to a cell (3) to be tested being placed on the nanowire layer (1), a change in the light signal emitted by the nanowires (11) supporting the cell to be tested (3) represents mechanical properties of the corresponding cell. Mechanical properties of a cell can be measured in real time according to a change in the light signal emitted by the nanowires.

Abstract: Electrochemical cells with a protective film that is permeable to hydrogen, or that include a catalyst that facilitates formation of mobile hydrogen species, that promotes sequestration or gettering of hydrogen or oxygen, and/or that facilitates conversion of hydrogen or oxygen to H2O, are disclosed.

Abstract: A neural network is trained to generate feature maps and associated weights. Reordering is performed to generate a functionally equivalent network. The reordering may be performed to improve at least one of compression of the weights, load balancing, and execution. In one implementation, zero value weights are grouped, permitting them to be skipped during execution.

Abstract: A security mode prompt method and apparatus where the method includes when it is determined that a terminal is currently in a first security mode, acquiring prestored first security information; receiving first verification information entered by a user, and establishing a first correspondence between the first security information and the first verification information; displaying confusion information, the first security information, and the first verification information on a screen for the user to select; receiving a selection result of the user, and determining, according to the first correspondence, whether the selection result of the user meets a preset rule; and when the selection result of the user meets the preset rule, prompting the user that the terminal is in a second security mode. Using the present disclosure, security of a terminal can be improved.