A separator and a lithium-ion battery. The separator includes a porous substrate, and a first coating layer arranged on at least one surface of the porous substrate, wherein the first coating layer includes an aromatic polyamide. An aramid coating layer is used; the aromatic polyamide in the aramid…
An electrochemical apparatus, including a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode active layer disposed on at least one surface of the positive electrode current collector. The…
An electrochemical apparatus includes a separator, a positive electrode plate, and an electrolyte solution, where the separator includes a porous layer, and an average pore diameter of the porous layer is 0.5 μm to 18 μm; the electrolyte solution includes propyl propionate, and based on a mass of…
An electrode assembly includes a negative electrode sheet with a negative electrode current collector and a negative electrode active material layer. A positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. Along a first direction…
A cell including an electrode assembly, and the electrode assembly being formed by winding a positive electrode plate, a separator, and a negative electrode plate stacked. A negative active material of the negative electrode plate includes a silicon-based material, and two surfaces of the negative…
A battery includes an electrode assembly, a first insulation layer, a second insulation layer, and at least one first adhesion portion. The electrode assembly includes a first surface and a second surface provided back away from the first surface; the first insulation layer is provided on the first…
An electrode assembly includes a first electrode plate and a second electrode plate of opposite polarities. A first current collector includes a first conductive layer, a first insulation layer, and a second conductive layer. A first active material layer is provided with a first groove. A first…
A battery cell includes a battery cell body, at least two tabs, a first connector and at least two insulators. The first connector is configured to fasten a tail end of an electrode assembly to an outer surface of the battery cell body; the at least two tabs include a first tab and a second tab…
A battery includes an electrode assembly and a packaging bag. The electrode assembly includes an electrode plate and a separator. The separator includes a porous substrate. A first coating layer is disposed on at least one surface of the porous substrate. The first coating layer includes a first…
A separator includes a base film and an organic coating disposed on one surface of the base film. The organic coating contains a first polymer and a second polymer. A melting point T of the first polymer satisfies 60° C.≤T≤100° C., and a swelling degree D of the second polymer during placement in…
A hard carbon material has a flake-like structure, where a length of the flake-like structure is denoted as L, and a width of the flake-like structure is denoted as D, where L satisfies: 2 μm≤L≤16 μm; and D satisfies: 0.1 μm≤D≤3 μm. The hard carbon material can have good contact between particles…
An electrochemical device includes: a positive electrode plate, a negative electrode plate, a separator, and a shape-memory alloy component. The positive electrode plate includes a positive current collector and a positive active material layer. The negative electrode plate includes a negative…
An electrochemical apparatus includes a housing and an electrode lead-out assembly, a first through hole is provided on a wall portion of the housing, the electrode lead-out assembly includes an electrode terminal, a connecting piece, and at least one sealing member, the connecting piece is a metal…
A hard carbon material used as a component of a negative electrode material. The hard carbon material has a porous structure, an average pore diameter of the hard carbon material is D nm, a cumulative pore volume up to the average pore diameter of the hard carbon material is B cm/g, a micropore…
A coating composition includes a modified melamine salt and a binder. An endothermic temperature of the modified melamine salt is lower than an endothermic temperature of an unmodified melamine salt as characterized by a differential scanning calorimetry curve. A difference between the two…
A secondary battery includes an electrode assembly. The electrode assembly includes a first electrode plate, where the first electrode plate is provided with a first electrode terminal. The first electrode plate has a first edge, a second electrode plate has a second edge. Along the first…
An electrochemical apparatus includes a housing, an electrode assembly, a first conductive member and a second conductive member. The housing includes a first housing body and a second housing body. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator…
A wound electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. The positive electrode sheet includes a positive electrode current collector and a positive electrode material layer located on a surface of the positive electrode current collector. The…
A secondary battery including a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode material layer disposed on at least one surface of the negative electrode current collector. The negative electrode material layer includes…
A negative electrode plate includes a negative current collector, the negative current collector includes a substrate layer and a conductive coating disposed on a surface of the substrate layer. The conductive coating includes a conductive agent and a binder. A material of the substrate layer…
The battery includes a housing, an electrode assembly, a first negative terminal, and a second negative terminal. The electrode assembly is accommodated in the housing. The electrode assembly includes a first stack and a second stack. The first stack includes a first negative electrode plate, a…
A lithium supplementing material includes LiMOand a semiconductor oxide on a surface thereof, where M includes at least one of Fe, Ni, Mn, Ru, Cr, Cu, Nb, Al, or Mo. In this application, the lithium supplementing material containing the semiconductor oxide is used, which can significantly enhance…
A negative electrode material, including an oxygen-containing silicon material. In a Raman spectrum of the oxygen-containing silicon material, Irepresents a peak intensity at a corresponding peak position of 140 cm±10 cmin the Raman spectrum, Irepresents a peak intensity at a corresponding peak…
A negative electrode material includes a core and a shell layer. The core is porous carbon with pores; where a silicon material is present on wall surfaces of the pores. The shell layer is a carbon material, and the shell layer encapsulates the core surface, sealing the pores. In the negative…
An electrode assembly is of a wound structure and includes a first electrode plate, a second electrode plate, and a separator, the separator being disposed between the first electrode plate and the second electrode plate. The first electrode plate includes a first winding start end and the…
A cell, 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. The first electrode includes a first current collector, and the first current collector includes a…
An electrochemical apparatus, including a housing and an electrode assembly. The housing includes a first housing portion and a second housing portion with opposite polarities. The electrode assembly includes an electrode plate assembly, a first tab, and a second tab, where the electrode plate…
An electrode plate, including a base portion and a tab. The base portion includes a first edge connected to the tab. The tab includes an extension portion and a connecting portion. The extension portion includes a first side edge and a second side edge. The connecting portion includes a third side…
An electrode assembly includes a first electrode plate unit and a second electrode plate unit. The separator includes a first separator film and a second separator film arranged on two opposite sides of the electrode plate respectively in a thickness direction of the electrode plate. The first…
A negative electrode material, including graphite, where the negative electrode material has an I-order lithium intercalation plateau potential P1 of 30 mV to 75 mV and an II-order lithium intercalation plateau potential P2 of 90 mV to 110 mV. The use of the negative electrode material of this…