Various implementations of a method of forming an electrochemical cell include providing a first electrode, a second electrode, a separator between the first and second electrodes, and an electrolyte in a cell container. The first electrode can include silicon-dominant electrochemically active material. The silicon-dominant electrochemically active material can include greater than 50% silicon by weight. The method can also include exposing at least a part of the electrochemical cell to CO.sub.2, and forming a solid electrolyte interphase (SEI) layer on the first electrode using the CO.sub.2.

The present invention provides a lithium secondary battery that has high energy density and capacity and has excellent cycle characteristics. The present invention relates to a lithium secondary battery including a positive electrode current collector, a negative electrode that is free of a negative electrode active material, a separator that is disposed between the positive electrode current collector and the negative electrode, a positive electrode that is disposed between the positive electrode current collector and the separator and contains a positive electrode active material, and electrolytic solution, wherein the lithium secondary battery includes a layer containing an anion-absorbing conductive polymer between the positive electrode current collector and the separator.

An electrode assembly, a battery cell, a battery, and a method and device for manufacturing an electrode assembly are provided. In some embodiments, the electrode assembly includes a positive electrode plate and a negative electrode plate. The positive electrode plate and the negative electrode plate are wound or folded to form a bend region. The positive electrode plate includes a plurality of bend portions located in the bend region. Each bend portion includes a positive current collecting layer and a positive active material layer. The positive current collecting layer is coated with the positive active material layer on at least one surface in a thickness direction of the positive electrode plate. A barrier layer is disposed between the positive current collecting layer and the positive active material layer.

The present invention relates to a coating tape and a method of manufacturing the same. More particularly, the present invention relates to a coating tape in which an inorganic layer formed on one surface or both surfaces of an electrode is formed in the form of an adhesive tape so as to be attached to a battery, and a method of manufacturing the same.

Batteries having a metal interlayer that acts as an ion conductor are provided, as well as methods of forming the same. The metal interlayer can include, for example, palladium, platinum, iridium, rhodium, ruthenium, osmium, gold, silver, or a combination thereof, and can act as a conductor while also inhibiting the transport of other species that would produce byproduct films and cause capacity degradation in the battery.

A method of preparing a lithium metal electrode, wherein the method includes providing a lithium metal strip, and providing a lubricant composition including a fluorine-based solvent and a fluorine-based compound on the lithium metal strip to obtain a coated lithium metal strip; and rolling the coated lithium metal strip to obtain the lithium metal electrode.

A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and contains is represented by the composition formula (1) and an insulating compound,
Li.sub.xMe.sub.yO.sub.αF.sub.β  (1)
wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied.
1.7≤x≤2.2
0.8≤y≤1.3
1≤α≤2.5
0.5≤β≤2

A positive electrode including a positive electrode current collector, an intermediate layer disposed on the positive electrode current collector and including a conductive agent and inorganic particles, and a positive electrode mixture layer disposed on the intermediate layer and including a positive electrode active material and a hydrogen phosphate salt represented by the general formula MaHbPO4 (wherein a satisfies 1≤a≤2, b satisfies 1≤b≤2, and M includes at least one element selected from alkali metals and alkaline earth metals), the positive electrode satisfying 0.5≤X≤3.0, 1.0≤Y≤7.0, and 0.07≤X/Y≤3.0 wherein X is the mass ratio (mass %) of the hydrogen phosphate salt relative to the total mass of the positive electrode active material and Y is the mass ratio (mass %) of the conductive agent relative to the total mass of the intermediate layer.

An aqueous secondary battery including: a positive electrode; a negative electrode; a separator; and an aqueous electrolytic solution including water and a metal salt represented by Chemical Formula 1 A.sub.xD.sub.y and having molality of about 5 M to about 40 M wherein in Chemical Formula 1, A is at least one metal ion selected from a sodium ion, a potassium ion, a magnesium ion, a calcium ion, a strontium ion, a zinc ion, or a barium ion, D is at least one type of atomic group ion selected from Cl.sup.−, SO.sub.4.sup.2−, NO.sub.3.sup.−, ClO.sub.4.sup.−, SCN.sup.−, CF.sub.3SO.sub.3.sup.−, C.sub.4F.sub.3SO.sub.3.sup.−, (CF.sub.3SO.sub.2).sub.2N.sup.−, AlO.sub.2.sup.−, AlCl.sub.4.sup.−, AsF.sub.6.sup.−, SbF.sub.6.sup.−, BR.sub.4.sup.−, and PO.sub.2F.sub.2.sup.−, and 0<x≤2, and 0<y≤2.

In various examples, a functionalized cross-linked polymer network includes a plurality of cross-linked multifunctional trione triazine groups, a plurality of disulfide groups, a plurality of cross-linked multifunctional ether groups, a plurality of cross-linked multifunctional polyether groups, or a combination thereof, a plurality of crosslinking multifunctional polyether groups, and a plurality of dangling groups, where individual cross-linked multifunctional trione triazine groups and/or cross-linked multifunctional disulfide groups and/or cross-linked multifunctional ether groups and/or cross-linked multifunctional polyether groups and individual crosslinking multifunctional polyether groups are connected by one or more covalent bond(s) and individual dangling groups may be connected to the network by a covalent bond. At least a portion of or all of the dangling groups may be halogenated. A functionalized cross-linked polymer network may be made by polymerization (e.g., Thiol-ene reach on(s)) of one or more functionalized monomer(s) and one or more multifunctional monomer(s).