Abstract: The present application provides a positive electrode and a lithium-ion battery. The positive electrode comprises a current collector; a first active material layer comprising a first active material; and a second active material layer; wherein the first active material layer is arranged between the current collector and the second active material layer, the first active material layer comprises a first active material, and the first active material is at least one selected from a group consisting of a modified lithium transition metal oxide positive electrode material and a modified lithium iron phosphate. The positive electrode of the present application helps to improve the thermal stability of the lithium-ion battery, and the improvement of the thermal stability may reduce the proportion of the thermal runaway when the lithium-ion battery is internally short-circuited so that the safety performance of the lithium-ion battery is improved.

Abstract: An electrode includes a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 ?m. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

Abstract: An electrode includes a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 ?m. The active material layer is used to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

Abstract: An electrode includes a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 ?m. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

Abstract: The present application provides an organic electroluminescent device and a display apparatus. The organic electroluminescent device includes a first conductive layer group, a second conductive layer group, and a light emitting layer disposed between the first conductive layer group and the second conductive layer group and in ohmic contact with the two groups. The first conductive layer group includes an electron blocking layer in ohmic contact with the light emitting layer, and a hole transport layer in ohmic contact with the electron blocking layer. The HOMO energy level of the electron blocking layer is between that of the hole transport layer and that of the light emitting layer, and the LUMO energy level of the electron blocking layer is shallower than that of the hole transport layer and that of the light emitting layer.

Abstract: The present application provides an electrode, an electrochemical device, and an electronic device. The electrode includes: a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 ?m. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

Abstract: The present application provides an organic electroluminescent device and a display apparatus. The organic electroluminescent device includes a first conductive layer group, a second conductive layer group, and a light emitting layer disposed between the first conductive layer group and the second conductive layer group and in ohmic contact with the two groups. The first conductive layer group includes an electron blocking layer in ohmic contact with the light emitting layer, and a hole transport layer in ohmic contact with the electron blocking layer. The HOMO energy level of the electron blocking layer is between that of the hole transport layer and that of the light emitting layer, and the LUMO energy level of the electron blocking layer is shallower than that of the hole transport layer and that of the light emitting layer.

Abstract: The present disclosure relates to a system and method for providing textile information and visualizing the same. The method for determining a damage level of a textile includes: receiving an image of at least a part of the textile; receiving information about a fabric type of the at least a part of the textile; analyzing the image by using a machine learning method so as to identify a fabric attribute of the at least a part of the textile; determining a severity value associated with the identified fabric attribute by using the machine learning method according to the received image, the identified fabric attribute and the fabric type; and determining the damage level of the textile based on the determined severity value.

Abstract: The present application provides an electrode, an electrochemical device, and an electronic device. The electrode includes: a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 ?m. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

Abstract: The present application provides an electrode and a lithium-ion battery. The electrode comprises: a current collector; a first active material layer comprising a first active material; and a second active material layer comprising a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on at least one surface of the current collector, and a ratio of an average particle size of the second active material to an average particle size of the first active material is from 1:1 to 40:1. The active material layer is used in the present application to ensure that the lithium-ion battery does not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the lithium-ion battery.

Abstract: The present application provides a positive electrode and a lithium-ion battery. The positive electrode comprises a current collector; a first active material layer comprising a first active material; and a second active material layer; wherein the first active material layer is arranged between the current collector and the second active material layer, the first active material layer comprises a first active material, and the first active material is at least one selected from a group consisting of a modified lithium transition metal oxide positive electrode material and a modified lithium iron phosphate. The positive electrode of the present application helps to improve the thermal stability of the lithium-ion battery, and the improvement of the thermal stability may reduce the proportion of the thermal runaway when the lithium-ion battery is internally short-circuited so that the safety performance of the lithium-ion battery is improved.

Abstract: The present application provides an electrode and a lithium-ion battery. The electrode comprises: a current collector; a first active material layer comprising a first active material; and a second active material layer comprising a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on at least one surface of the current collector, and a ratio of an average particle size of the second active material to an average particle size of the first active material is from 1:1 to 40:1. The active material layer is used in the present application to ensure that the lithium-ion battery does not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the lithium-ion battery.