Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3?(OIc×PDc)/(OIa×PDa)?20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

Abstract: The present application refers to secondary battery and battery module, battery pack and apparatus including the secondary battery. In particular, the secondary battery includes a housing as well as an electrode assembly and an electrolyte contained in the housing; the electrode assembly includes a positive electrode plate, a negative electrode plate and a separator, and the positive electrode plate includes a positive current collector and a positive electrode film that is disposed on at least one surface of the positive electrode current collector and includes a positive electrode active material; the positive electrode active material includes one or more of lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide; the negative electrode plate includes a negative electrode current collector and a negative electrode film that is disposed on at least one surface of the negative electrode current collector and includes a negative electrode active material.

Abstract: The present application discloses a secondary battery and a battery module, a battery pack and an apparatus containing the secondary battery.

Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3?(OIc×PDc)/(OIa×PDa)?20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

Abstract: The present application discloses a secondary battery and a battery module, a battery pack and an apparatus containing the secondary battery.

Abstract: The present application refers to secondary battery and battery module, battery pack and apparatus including the secondary battery. In particular, the secondary battery includes a housing as well as an electrode assembly and an electrolyte contained in the housing; the electrode assembly includes a positive electrode plate, a negative electrode plate and a separator, and the positive electrode plate includes a positive current collector and a positive electrode film that is disposed on at least one surface of the positive electrode current collector and includes a positive electrode active material; the positive electrode active material includes one or more of lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide; the negative electrode plate includes a negative electrode current collector and a negative electrode film that is disposed on at least one surface of the negative electrode current collector and includes a negative electrode active material.

Abstract: The embodiments of this application provide a secondary battery, and a battery module, a battery pack and an apparatus including the same. Specifically, this application provides a secondary battery, which includes a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode film disposed on at least one surface of the negative electrode current collector. The negative electrode film includes a negative electrode active material, a conductive agent, and a binder. The negative electrode active material includes SiOx (0<x<2) and graphite. An average particle diameter Dv50 of the negative electrode active material is from 8 ?m to 14 ?m. The conductive agent includes carbon nanotubes whose aspect ratio is greater than or equal to 2500:1. The secondary battery can have both good rate performance and cycle performance under the premise of a relatively high energy density.

Abstract: A negative electrode plate, a secondary battery and an apparatus thereof are provided in the present application. The negative electrode plate includes a negative electrode current collector and a negative membrane disposed on the negative electrode current collector, and the negative membrane includes a first coating layer and a second coating layer. The first coating layer is located on an outermost layer of the negative membrane and includes a first negative active material including a silicon-based material and a carbon material, and in the first coating layer, a mass percentage of the silicon-based material is 0.5% to 10%. The second coating layer is disposed between the first coating layer and the negative electrode current collector and includes a second negative active material including a silicon-based material and a carbon material, and in the second coating layer, a mass percentage of the silicon-based material is 5%-50%.

Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5?(m×C)/(?×Cap)?6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.

Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5?(m×C)/(?×Cap)?6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.

Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3?(OIc×PDc)/(OIa×PDa)?20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

Abstract: Provided are a positive electrode plate and a lithium ion battery. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer includes a first sub-layer as the outermost sub-layer of the positive active material layer, and a second sub-layer disposed between the positive electrode current collector and the first sub-layer. The first sub-layer includes a first positive electrode active material, the second sub-layer includes a second positive electrode active material. The first positive electrode active material is one or more of a ternary positive electrode material having a monocrystalline or quasi-monocrystalline structure, and a coating-modified material thereof. The present disclosure can improve energy density of the lithium ion battery and reduce gas production of the lithium ion battery, so that the lithium ion battery has high energy density and good storage performance at the same time.

Abstract: An electrode with coating layer and a Li-ion battery including the electrode with coating layer are provided. The electrode with coating layer includes an electrode piece, a first material layer adjacent to the electrode piece, and a second material layer adjacent to the first material layer and far away from the electrode piece, the first material layer includes a first inorganic particle and a first binder, the second material layer includes a second binder, the first inorganic particle is at least one selected from a group consisting of metal hydroxide and boron-containing compound. The electrode with coating layer, under synergistic effect of the first material layer and the second material layer, can improve thermal stability and safety of the battery, under a situation that both the exterior and interior of the battery are at high temperature, the battery does not readily burn or explode.

Abstract: A surface modified lithium titanate and preparation method thereof is provided. In the surface modified lithium titanate, the deactivating groups distributed on the surface of the lithium titanate are —O—P—RR?R?, —O—P—(OR)R?R?, —O—P—(OR)(OR?)R?, and —O—P—(OR)(OR?)(OR?), where R, R? and R? are identical or different C1˜C8 alkyl or alkenyl groups. The deactivating groups are bonded to the lithium titanate via a bond or a bridge. The exemplary surface modified lithium titanate can effectively lower its catalytic activity, reduce the gassing of lithium ion batteries, and therefore improve the high temperature storage and high temperature cycle performance of lithium titanate batteries. The exemplary preparation method is simple, has great repeatability, a low cost, low pollution to the environment, and is suitable for industrial production.

Abstract: A surface modified lithium titanate and preparation method thereof is provided. In the surface modified lithium titanate, the deactivating groups distributed on the surface of the lithium titanate are —O—P—RR?R?, —O—P—(OR)R?R?, —O—P—(OR)(OR?)R?, and —O—P—(OR)(OR?)(OR?), where R, R? and R? are identical or different C1˜C8 alkyl or alkenyl groups. The deactivating groups are bonded to the lithium titanate via a bond or a bridge. The exemplary surface modified lithium titanate can effectively lower its catalytic activity, reduce the gassing of lithium ion batteries, and therefore improve the high temperature storage and high temperature cycle performance of lithium titanate batteries. The exemplary preparation method is simple, has great repeatability, a low cost, low pollution to the environment, and is suitable for industrial production.