Abstract: This application discloses a negative active material and a preparation method thereof, a negative electrode plate, a secondary battery, and an electrical device, and relates to the battery field. The negative active material includes: porous carbon, where a surface of the porous carbon is provided with pore channels communicating to an interior of the porous carbon; and, a deposit, settling in the pore channels and including a silicon layer and a functional layer deposited in sequence from an interior of the pore channels outward, where the functional layer is made of a material that includes at least one of carbon, phosphorus, tin, or germanium.

Abstract: This application provides an internal series battery, including a series module including three or more battery units, each including a positive active material layer, a solid electrolyte layer and a negative active material layer stacked, and intermediate current collectors, each disposed between the corresponding two adjacent battery units connected in series therethrough; a positive current collector located at one end of the series module and electrically connected to the positive active material layer of the battery unit at the end; and a negative current collector located at the other end of the series module and electrically connected to the negative active material layer of the battery unit at the end. The battery units include a first battery unit and a second battery unit that have an energy density the same as and different from any one of the battery units at the two ends of the series module respectively.

Abstract: A phase-array antenna is provided. The phase-array antenna includes a plurality of antenna units arranged in an array. One of the plurality antenna units includes a substrate, a feeding line, a conductor and an active element. The feeding line is disposed on the substrate and has a signal transmitting end. The conductor is disposed on the substrate and has a signal receiving end. The active element is disposed on the substrate and includes an active layer. The signal transmitting end of the feeding line is apart from the signal receiving end of the conductor by 0.05 mm to 5 mm, and the active layer is apart from the feeding line by 1 mm to 200 mm.

Abstract: An electronic device is provided. The electronic device includes a first electronic device unit. The first electronic device unit includes a first substrate. The first substrate includes an edge. The edge includes a first side surface having a portion that has been grinded and a portion that has been ungrinded. In a normal direction of the first substrate, the first side surface has a first maximum height, and the portion that has been grinded has a second maximum height. Moreover, a ratio of the second maximum height to the first maximum height is in a range from 0.1 to 0.9.

Abstract: An electronic device is provided. The electronic device includes a substrate, a feeding line, and a phase shifter electrode. The feeding line is disposed on the substrate and has a signal transmitting end. The phase shifter electrode is disposed on the substrate and has a signal receiving end. The signal transmitting end of the feeding line and the signal receiving end of the phase shifter electrode are a first distance apart. The first distance between the signal transmitting end of the feeding line and the signal receiving end of the phase shifter electrode is in a range from 0.05 mm to 5 mm.

Abstract: An electronic device is provided. The electronic device includes a first electronic device unit. The first electronic device unit includes a first substrate and a second substrate disposed opposite to the first substrate. The first substrate includes a protruding part which protrudes outward a boundary of the second substrate along a protruding direction perpendicular to a normal direction of the first substrate. The protruding part includes a first side surface having a portion that has been grinded and a portion that has been ungrinded, and a surface roughness of the portion that has been grinded is different from a surface roughness of the portion that has been ungrinded.

Abstract: Provided is a pore-forming agent for secondary battery and a preparation method thereof, a negative electrode plate, an electrode assembly, and a secondary battery. The pore-forming agent for secondary battery includes a one-dimensional conductive material and stable-state lithium metal particles, where the stable-state lithium metal particles are loaded on the one-dimensional conductive material.

Abstract: A negative electrode plate, an electrode assembly, a battery cell, a battery, and an electrical device are disclosed. The negative electrode plate includes: a negative current collector and a negative active material layer disposed on the negative current collector. A plurality of pore channels are disposed in the negative active material layer. The technical solution of this application reduces lithium plating on a surface of the negative electrode plate, and reduces the possibility of lithium dendrites growing and piercing the separator, thereby enhancing reliability of the battery.

Abstract: A negative electrode plate for a secondary battery and a preparation method therefor, and a secondary battery comprising the negative electrode plate, a battery module, a battery pack, and a power consuming device are described. The composite lithium metal negative electrode plate of the present application comprises a current collector and an active substance layer coated on at least one surface of the current collector, wherein the active substance layer comprises an active substance and a lithiophilic material having a core-shell structure, and the core of the lithiophilic material contains a lithiophilic substance and the shell thereof is a carbon material.

Abstract: Provided are a positive electrode plate for secondary battery, a manufacturing method thereof, and a secondary battery, battery module, battery pack, and electric apparatus using such positive electrode plate for secondary battery. The positive electrode plate for secondary battery includes a current collector and a positive electrode active substance layer and further includes a porous layer containing a porous carbon material between the current collector and the positive electrode active substance layer.

Abstract: An electronic device includes a substrate, plurality of electrodes disposed on the substrate, a plurality of metal elements disposed on the substrate, a plurality of first lines disposed on the substrate, and a radio frequency signal processor. One of the plurality of metal elements is overlapped one of the plurality of electrodes. The radio frequency signal processor provides a signal to the one of the plurality of electrodes through one of the plurality of first lines.

Abstract: Lithium replenishing spaces are disposed on a current collection structure, such that the lithium replenishing spaces communicate with an active layer on one side; and the battery is replenished with lithium by using lithium replenishing agents in the lithium replenishing spaces to offset an irreversible lithium consumption in a cycle process, so as to increase the total capacity and the energy density of the battery. According to the present application, due to average weights MA of corresponding active materials in different distribution regions on the active layer, a sum V0 of internal volumes of lithium replenishing spaces corresponding to each of the distribution regions is controlled in a positively correlated manner based on a change in the average weights of the active materials in the different distribution regions.

Abstract: An electronic modulating device is provided, which includes a first substrate, an electrode, and an insulating layer. The electrode is disposed on the first substrate, wherein the electrode comprises an opening defining a top edge and a bottom edge of the electrode, and the opening has a central portion. The insulating layer is disposed on the electrode and within the opening. Wherein a thickness of the insulating layer at the bottom edge is greater than a thickness of the insulating layer at the central portion, and the electrode has a first inner side and at least a portion of the first inner side is uneven.

Abstract: An electronic device includes a substrate, plurality of electrodes disposed on the substrate, a plurality of metal elements disposed on the substrate, a plurality of first lines disposed on the substrate, and a radio frequency signal processor. One of the plurality of metal elements is overlapped one of the plurality of electrodes. The radio frequency signal processor provides a signal to the one of the plurality of electrodes through one of the plurality of first lines.

Abstract: A compound electrode sheet includes two single electrode sheets, and each single electrode sheet includes a current collector and an active material layer. The current collector is provided with a main body and a protrusion portion, and the protrusion portion is arranged protruding out of the main body in an extension direction of the current collector. The active material layer is arranged on a surface of the main body. The protrusion portions of the two current collectors of the two single electrode sheets are fixedly connected. The active material layers of the two single electrode sheets are arranged opposite to each other.

Abstract: A secondary battery includes a negative electrode plate. A negative electrode active material layer of the negative electrode plate includes a porous carbon material. The negative electrode active material layer has a pore. The pore runs through or not through the negative electrode active material layer. Lithium metal is present in the pore.

Abstract: An electrode plate and a method for preparing the electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus are described. The electrode plate includes a current collector and an active substance layer provided on at least one surface of the current collector. The active substance layer includes an active main material and a porous material. The active substance layer has pores, where the pore runs through or not through the active substance layer. Thickness of the active substance layer is x, and distance between two end openings of the pore in a direction perpendicular to the active substance layer is y, where x and y satisfy the following condition: 0.1?x?y?x.

Abstract: An electronic device is provided. The electronic device includes a substrate, a feeding line, and a phase shifter electrode. The feeding line is disposed on the substrate and has a signal transmitting end. The phase shifter electrode is disposed on the substrate and has a signal receiving end. The signal transmitting end of the feeding line and the signal receiving end of the phase shifter electrode are a first distance apart. The first distance between the signal transmitting end of the feeding line and the signal receiving end of the phase shifter electrode is in a range from 0.05 mm to 5 mm.

Abstract: An electronic modulating device is provided, which includes a first substrate, an electrode, and an insulating layer. The electrode is disposed on the first substrate, wherein the electrode comprises an opening defining a top edge and a bottom edge of the electrode, and the opening has a central portion. The insulating layer is disposed on the electrode and within the opening. Wherein a thickness of the insulating layer at the bottom edge is greater than a thickness of the insulating layer at the central portion, and the electrode has a first inner side and at least a portion of the first inner side is uneven.

Abstract: An electronic device is provided. The electronic device includes a substrate, a feeding line and an electrode. The feeding line is disposed on the substrate for transmitting a signal. The electrode is disposed on the substrate for receiving the signal. In addition, an end portion of the feeding line is disposed opposite to an end portion of the electrode.