A method for preparing an ultrathin Li complex includes the steps of preparing an organic transition layer on a substrate in advance, and contacting the substrate having transition layer with molten Li in argon atmosphere with H.sub.2O≤0.1 ppm and O.sub.2≤0.1 ppm. The molten Li spreads rapidly on the surface of the substrate to form a lithium thin layer. The ultrathin Li layer stores lithium on the current collector beforehand. It can be used as a safe lithium anode to inhibit dendrites.

A prelithiated anode may include a current collector may include a metal oxide layer. Prelithiated anodes may in addition include a lithiated storage layer overlaying the metal oxide layer. The lithiated storage layer may be formed by incorporating lithium into a continuous porous lithium storage layer may include at least 80 atomic % silicon. The lithiated storage layer may include less than 1% by weight of carbon-based binders. The lithiated storage layer may further include lithium in a range of 1% to 90% of a theoretical lithium storage capacity of the continuous porous lithium storage layer. Batteries may include the prelithiated anode.

The present disclosure relates to a composite positive electrode current collector. On a surface of an insulation layer, a protective layer, a graphene metallization layer and a conductive layer may be arranged in sequence; and the protective layer may comprise a metal oxide, and the graphene metallization layer may contain highly reduced graphene oxide having an oxygen-containing organic group.

Described are substrates including a layer of an aluminum alloy with a conductive coating, also referred to as a protective overlayer. The conductive coating can prevent certain material from coming into contact with the aluminum alloy layer while allowing transmission of electrons to the aluminum alloy. The substrates may be used, for example, in electronics applications, such as current collectors or electrodes for batteries, electrochemical cells, capacitors, supercapacitors, or the like.

An electrochemical device includes an electrolytic solution, an electrode assembly, and a housing accommodating the electrolytic solution and the electrode assembly. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator disposed there between, which are stacked and wound. In a direction of a winding central axis, the electrochemical device includes a first end and a second end that are opposite to each other. The first electrode plate includes a first current collector and a first active material layer disposed on the first current collector. The first current collector includes a first part. In the direction of the winding central axis, the first part is located at an end of the first current collector and is closer to the first end than the second end. A porous layer is disposed on the first part.

A negative electrode plate includes a negative current collector and a piezoelectric layer. A polarization electric field exists on the piezoelectric layer. A direction of the polarization electric field is directed from the negative current collector to a surface of a negative electrode. A material of the piezoelectric layer includes at least one of a piezoelectric polymer, piezoelectric ceramic, piezoelectric monocrystal, or an inorganic piezoelectric material. The negative electrode plate can control lithium deposition sites, effectively suppress the growth of lithium dendrites, and significantly improve the cycle performance and safety performance of the lithium metal battery.

An insulation paste for a current collector for a lithium-ion secondary battery contains an inorganic filler (A), a binder (B), a dispersion resin (C), and a solvent (D), wherein the insulation paste has a viscosity (shear rate of 1 s.sup.−1) of 2000 mPa.Math.s or more, and has a TI value of greater than 1, and the TI value is a ratio of the viscosity at a shear rate of 1 s.sup.−1 to the viscosity at a shear rate of 1000 s.sup.−1.

A composite electrolyte includes: a positively charged particle, a particle that is positively charged by having a coordinate bond with a cation, or a combination thereof; and a lithium salt.

Disclosed is a method for making a lithium-ion cell by depositing from an atmospheric plasma deposition device inorganic oxide particles produced from a precursor in an atmospheric plasma as a coating on a surface of a lithium-ion electrochemical cell component. The coating formed by the inorganic oxide particles may be an insulating coating or may provide dimensional stability during a thermal runaway.

Embodiments of the invention provide batteries, electrodes, and methods of making the same. According to one embodiment, a battery may include a positive plate having a grid pasted with a lead oxide material, a negative plate having a grid pasted with a lead based material, a separator separating the positive plate and the negative plate, and an electrolyte. A nonwoven glass mat may be in contact with a surface of either or both the positive plate or the negative plate to reinforce the plate. The nonwoven glass mat may include a plurality of first coarse fibers having fiber diameters between about 6 μm and 11 μm and a plurality of second coarse fibers having fiber diameters between about 10 μm and 20 μm.