Abstract: Disclosed are a positive electrode plate and a lithium-ion battery including the positive electrode plate. The positive electrode plate includes a positive current collector, a safety coating layer, a composite fusion layer, and a positive active material layer; the safety coating layer comprises a first conductive agent, a first binder, a functional microsphere, and an auxiliary agent. The safety coating layer has conductive performance at normal temperature, and has the advantages of increasing a contact area between an active material and the current collector, improving the electrical conductivity, and effectively reducing polarization of the battery; when the use temperature of the positive electrode plate reaches 120° C. or above, the functional microsphere will be melted to form a plurality of continuous electron blocking layers, the coating layer blocks current, internal blocking is formed inside the battery, and the occurrence of further thermal runaway of the battery is prevented.

Abstract: A positive electrode sheet containing a high-safety heat-sensitive coating and a lithium-ion battery containing the positive electrode sheet are provided. The heat-sensitive coating includes a first conductive agent, a first binder, heat-sensitive polymer microspheres and an auxiliary agent, and has a conductive property at normal temperature and also has advantages of increasing a contact area between an active material and a current collector, improving the conductivity, and effectively reducing the polarization of battery and the like; when the use temperature of the positive electrode sheet reaches 120° C. and above, the heat-sensitive polymer microspheres will melt to form a plurality of continuous electron blocking layers, current blocking occurs in the coating, an internal blocking forms inside the battery, thereby preventing the occurrence of further thermal runaway of lithium-ion battery.

Abstract: Disclosed are a negative electrode active material, and a negative electrode plate and a battery including the negative electrode active material. The negative electrode active material of the present disclosure is a secondary particle having a larger particle size and a higher sphericity degree formed from several particulates having smaller particle sizes and lower sphericity degrees. Isotropy of the negative electrode active material is relatively high, and the particulates in the secondary particle make a migration path of lithium ions relatively short, so that the lithium ions can be intercalated and deintercalated quickly, implementing fast charging performance of the battery.

Abstract: Disclosed are a negative electrode plate and a battery including the negative electrode plate. The negative electrode plate includes a negative electrode current collector, and a first coating region, a second coating region, and a third coating region sequentially disposed along a width direction of the negative electrode current collector. In the present disclosure, a negative electrode plate is designed with a special structure and composition, which solves a problem that lithium deposition easily occurs at the head and bottom during application of a multi-tab winding structure, so that the multi-tab winding structure may be better applied in batteries.

Abstract: Disclosed are a negative electrode plate, an electrochemical energy storage apparatus and an electronic apparatus comprising the negative electrode plate. A negative electrode active material of the negative electrode plate includes a first amorphous carbon material. An interlayer spacing d002 of the first amorphous carbon material is greater than 0.34 nm, and an average pore diameter of pores of the first amorphous carbon material ranges from 2 nm to 20 nm. The negative electrode plate can help improve energy density of a lithium-ion battery and suppress expansion of an electrochemical energy storage apparatus during cycling.

Abstract: Disclosed are a positive electrode plate and a lithium-ion battery including the positive electrode plate. The positive electrode plate includes a positive current collector, a safety coating layer, a composite fusion layer, and a positive active material layer; the safety coating layer comprises a first conductive agent, a first binder, a functional microsphere, and an auxiliary agent. The safety coating layer has conductive performance at normal temperature, and has the advantages of increasing a contact area between an active material and the current collector, improving the electrical conductivity, and effectively reducing polarization of the battery; when the use temperature of the positive electrode plate reaches 120° C. or above, the functional microsphere will be melted to form a plurality of continuous electron blocking layers, the coating layer blocks current, internal blocking is formed inside the battery, and the occurrence of further thermal runaway of the battery is prevented.

Abstract: A positive electrode sheet containing a high-safety heat-sensitive coating and a lithium-ion battery containing the positive electrode sheet are provided. The heat-sensitive coating includes a first conductive agent, a first binder, heat-sensitive polymer microspheres and an auxiliary agent, and has a conductive property at normal temperature and also has advantages of increasing a contact area between an active material and a current collector, improving the conductivity, and effectively reducing the polarization of battery and the like; when the use temperature of the positive electrode sheet reaches 120° C. and above, the heat-sensitive polymer microspheres will melt to form a plurality of continuous electron blocking layers, current blocking occurs in the coating, an internal blocking forms inside the battery, thereby preventing the occurrence of further thermal runaway of lithium-ion battery.

Abstract: Disclosed are a positive electrode plate and a battery including the positive electrode plate. The positive electrode plate includes a positive electrode current collector, at least one thermosensitive coating layer, at least one composite fusion layer, and at least one positive electrode active material layer. The thermosensitive coating layer has electrical conductivity at room temperature, and has advantages of increasing a contact area between the active material and the current collector, effectively reducing battery polarization, and the like. When a temperature of the positive electrode plate during use reaches a thermosensitive temperature and higher, thermosensitive polymer microspheres melt to form at least one continuous electron blocking layer, therefore forming a current blockage, and an internal blockage is formed inside the battery, thereby preventing further thermal runaway of a secondary battery, and improving safety performance of the secondary battery.