What are provided are a positive electrode for a lithium-ion battery capable of suppressing the generation of carbon dioxide while increasing the battery capacity of the lithium-ion battery, a lithium-ion battery and a method for producing a positive electrode for a lithium-ion battery. A positive electrode for a lithium-ion battery having a positive electrode current collector and a positive electrode active material layer, in which the positive electrode active material layer has a positive electrode mixture containing the positive electrode active material, and the positive electrode mixture contains lithium carbonate in a range of 9% by mass or more and 20% by mass or less with respect of the total weight thereof.

A lithium secondary battery, wherein there is a pre-lithiated negative electrode such that a total irreversible capacity of a positive electrode is greater than a total irreversible capacity of the negative electrode while satisfying 150< (negative electrode discharge capacity/lithium secondary battery discharge capacity)×100<300, and a relative potential of the negative electrode with respect to lithium metal in an operating voltage range of the lithium secondary battery is in a range of −0.1 V to 0.7 V. Such a lithium secondary battery is capable of maintaining a capacity retention of 60% or more even after 500 cycles or more while achieving an energy density per volume of 800 Wh/L or more.

An all-solid secondary battery includes: a cathode layer including a cathode active material; an anode layer including an anode current collector, a first anode active material layer, and a second anode active material layer between the anode current collector and the first anode active material layer; and a solid electrolyte layer between the cathode layer and the anode layer and including a solid electrolyte, wherein the first anode active material layer is adjacent to the solid electrolyte layer, has pores, and contains a metal or metal alloy capable of forming an alloy or a compound with lithium, and the second anode active material layer includes a second anode active material including a carbon anode active material and optionally a metal or metalloid anode active material.

This disclosure provides a battery comprising a cathode and an anode positioned opposite the cathode. A hybrid artificial solid-electrolyte interphase (A-SEI) layer is deposited on the anode and includes a plurality of active components. A blended material is interwoven throughout the plurality of active components and configured to inhibit growth of Lithium (Li) dendritic structures from the anode to the cathode. The blended material includes a combination of crystalline sp.sup.2-bound carbon domains of graphene sheets and a plurality of flexible wrinkle areas positioned at joinder points of two of more of the crystalline sp.sup.2-bound carbon domains of graphene sheets and a polymeric matrix configured to bind the plurality of active components and the blended material together. An electrolyte is in contact with the hybrid A-SEI and the cathode and a separator is positioned between the anode and the cathode. The blended material includes curable carboxylate salts of metals.

A lithium electrode and a lithium secondary battery including the same. By using an olefin-based ion conducting polymer as a protective layer-forming material of a lithium electrode having a protective layer formed on a lithium metal layer, the lithium electrode may be protected from moisture or open air during a lithium electrode preparation process, lithium dendrite formation and growth from the lithium electrode may be prevented, and performance of a battery using the lithium electrode may be enhanced.

Lithium ion batteries, methods of making the same, and equipment for making the same are provided. In one implementation, a method of fabricating a pre-lithiated electrode is provided. The method comprises disposing a lithium metal target comprising a layer of lithium metal adjacent to a surface of a prefabricated electrode. The method further comprises heating at least one of the lithium metal target and the prefabricated electrode to a temperature less than or equal to 180 degrees Celsius. The method further comprises compressing the lithium metal target and the prefabricated electrode together while applying ultrasound to the lithium metal target to transfer a quantity of lithium from the lithium metal target to the prefabricated electrode.

Provided is an all-solid-state battery with high charge-discharge efficiency, and a method for producing the all-solid-state battery. Disclosed is an all-solid-state battery, wherein a lithium metal precipitation-dissolution reaction is used as an anode reaction; wherein the all-solid-state battery comprises a cathode comprising a cathode layer, an anode comprising an anode current collector and an anode layer, and a solid electrolyte layer disposed between the cathode layer and the anode layer; wherein the anode layer contains, as an anode active material, a single β-phase alloy of a lithium metal and a magnesium metal; and wherein a percentage of the lithium element in the alloy is 81.80 atomic % or more and 99.97 atomic % or less when the all-solid-state battery is fully charged.

A lithium (Li) secondary battery having a Li buffer layer compressed between a Li metal anode and an electrolyte of the battery cell and a porous structure positioned between the Li metal anode and a current collector of the battery cell. The Li buffer layer is effective in preventing uncontrollable dendrite growth. The porous structure layer is effective in guiding the location of the Li deposition, thereby reducing the volume changes of the Li anode during the charge and discharge cycles of the lithium secondary battery.

A system for electrical energy production from chemical reagents in a compartmentalized cell includes: at least two electrodes, comprising at least one anode and at least one cathode; at least one separator, that separates the anodes and the cathodes; and an ionic liquid electrolyte system. The system can be a battery or one or more cells of a battery system. The ionic liquid electrolyte system comprises an ionic liquid solvent; an ether co-solvent, comprising a minority fraction, by weight, of the electrolyte; and a lithium salt. In preferred variations, the anode is a lithium metal anode and the cathode is a metal oxide cathode and the separator is a polyolefin separator.

Disclosed is an electrolyte for a lithium-sulfur battery and a lithium-sulfur battery including the same, more particularly an electrolyte for a lithium-sulfur battery including a lithium salt, a non-aqueous organic solvent, and an additive, wherein the additive includes an alkyl vinyl ether compound. The electrolyte for the lithium-sulfur battery improves the efficiency and stability of the negative electrode, thereby improving the capacity and lifetime characteristics of the lithium-sulfur battery.