Acidified metal oxides combined with non-acidified metal oxides used as a battery electrode active material.

A nickel-based metal oxide for a lithium secondary battery, a nickel-based active material obtained from the nickel-based lithium metal oxide, a method of preparing the nickel-based metal oxide, and a lithium secondary battery including the nickel-based metal oxide as a cathode are provided. The nickel-based metal oxide for a lithium secondary battery is a single-crystal particle and includes a cubic composite phase, wherein the cubic composite phase includes a metal oxide phase represented by Formula 1 and a metal oxide phase represented by Formula 2:

Ni.sub.1-x-z-kM.sub.kLi.sub.xCo.sub.zO.sub.1-y,  Formula 1

wherein, in Formula 1, 0≤x≤0.1, 0≤y≤0.1, 0≤z≤0.5, and 0≤k≤0.5,

Ni.sub.6-x-z-kM.sub.kLi.sub.xCo.sub.zMnO.sub.8-y, and  Formula 2

wherein, in Formula 2, 0≤x≤0.1, 0≤y≤0.1, 0≤z≤0.5, and 0≤k≤0.5, and the case where x of Formula 1 and x of Formula 2 are 0 at the same time is excluded.

A nickel-based metal oxide for a lithium secondary battery, a nickel-based active material obtained from the nickel-based lithium metal oxide, a method of preparing the nickel-based metal oxide, and a lithium secondary battery including the nickel-based metal oxide as a cathode are provided. The nickel-based metal oxide for a lithium secondary battery is a single-crystal particle and includes a cubic composite phase, wherein the cubic composite phase includes a metal oxide phase represented by Formula 1 and a metal oxide phase represented by Formula 2:

Ni.sub.1-x-z-kM.sub.kLi.sub.xCo.sub.zO.sub.1-y,  Formula 1

wherein, in Formula 1, 0≤x≤0.1, 0≤y≤0.1, 0≤z≤0.5, and 0≤k≤0.5,

Ni.sub.6-x-z-kM.sub.kLi.sub.xCo.sub.zMnO.sub.8-y, and  Formula 2

wherein, in Formula 2, 0≤x≤0.1, 0≤y≤0.1, 0≤z≤0.5, and 0≤k≤0.5, and the case where x of Formula 1 and x of Formula 2 are 0 at the same time is excluded.

A nanofiber based micro-structured material including metal fibers with metal oxide coatings and methods are shown. In one example, nanofiber based micro-structured material is used as an electrode in a battery, such as a lithium ion battery, where the nanofibers of micro-structured material form a nanofiber cloth with free-standing, core-shell structure.

A nanofiber based micro-structured material including metal fibers with metal oxide coatings and methods are shown. In one example, nanofiber based micro-structured material is used as an electrode in a battery, such as a lithium ion battery, where the nanofibers of micro-structured material form a nanofiber cloth with free-standing, core-shell structure.

An alkaline battery comprises an anode, a cathode, a separator disposed between the anode and the cathode, a barrier layer disposed between the anode and the cathode, and an electrolyte in fluid communication with the anode, the cathode, and the separator. The barrier layer is at least one of: an organic polymer film or a porous inorganic layer or combinations thereof.

In some embodiments, a battery comprises an anode, a cathode, a separator disposed between the anode and the cathode, and an electrolyte in fluid communication with the anode, the cathode, and the separator. The anode can be a porous metallic zinc anode. The porous metallic zinc anode comprises pure zinc electrode, a substrate coated with zinc, a zinc substrate with a coating layer, or combinations thereof.

A method of forming an electrode in an electrochemical battery comprises coating a reticulated substrate with a first wash, the first wash having a conductive material with conductive fibrous members and curing the reticulated substrate coated with the first wash having the conductive material with the conductive fibrous members.

A rechargeable lithium-ion battery includes a housing and a battery cell arranged in the housing. The battery cell includes a liquid electrolyte, a composite anode, a composite cathode, and a separator arranged between the composite anode and the composite cathode. The liquid electrolyte includes an ionic liquid, an organic compound, and a lithium salt. The composite anode includes a metal current collector coated with a layer which includes an active material and a binder. The composite cathode includes a metal current collector coated with a layer which includes an active material and a binder. The active material of the composite anode is a lithium titan oxide (LTO). The composite cathode, the composite anode, and the separator, when immersed in the liquid electrolyte, are heat resistant at temperatures of above 150° C. The rechargeable lithium-ion battery is rechargeable in a temperature range of from −30° C. to 150° C.

Compounds, powders, and cathode active materials that can be used in lithium ion batteries are described herein. Methods of making such compounds, powders, and cathode active materials are described.