In order to overcome the problem of metal dendrites caused by uneven deposition on the surface of the existing metal electrode, the present application provides a metal electrode, comprising a metal layer and a coating, the coating comprises at least one block copolymer; the block copolymer comprises a first polymer block for independently conducting metal ions and a second polymer block for providing mechanical strength; a shear modulus of the coating is ≥10.sup.7 Pa, and a thickness of the coating is 500 nm-50 μm. Meanwhile, the application also discloses a battery comprising the metal electrode. The metal electrode provided by the application has good ionic conductivity and inhibition capability for metal dendrite.

Disclosed is an anode for a lithium secondary battery including a composite including a structure and a lithium metal or lithium alloy with which the structure is filled.

An all-solid secondary battery, including: a cathode; an anode; and a solid electrolyte disposed between the cathode and the anode, wherein the anode includes an anode current collector; a first anode active material layer in contact with the anode current collector and including a first metal; a second anode active material layer disposed between the first anode active material layer and the solid electrolyte and including a carbon-containing active material; and a contact layer between the second anode active material layer and the solid electrolyte, the contact layer including a second metal, and having a thickness less than a thickness of the first anode active material layer, wherein the second metal includes lithium metal, a lithium alloy, a metal alloyable with lithium, or a combination thereof.

The present disclosure provides an electrode piece and a battery. The electrode piece includes a current collector and a functional layer located on a first surface of the current collector, the first surface is provided with a tab, and the functional layer is composed of a normal area away from the tab and a recessed area near the tab, and a thickness of the recessed area is less than a thickness of the normal area. The present disclosure can effectively prevent problems such as excessive thickness of part of a cell near the tab, thereby improving battery qualities such as safety and charging/discharging rate.

An electrochemical element includes a current collector, and an active material layer supported on the current collector, wherein the active material layer includes active material particles, the active material particles each include lithium silicate composite particles each including a lithium silicate phase and silicon particles dispersed in the lithium silicate phase, and a first coating that covers at least a portion of a surface of the lithium silicate composite particles, the first coating includes an oxide of a first element other than a non-metal element, the active material layer has a thickness TA, and T1b > T1t is satisfied, where T1b is a thickness of the first coating that covers the lithium silicate composite particles at a position of 0.25TA from the surface of the current collector in the active material layer, and T1t is a thickness of the first coating that covers the lithium silicate composite particles at a position of 0.75TA from the surface of the current collector in the active material layer.

An electrochemical cell including a lithium metal anode and a multilayered cathode includes a lithium metal anode laminated, electroplated, or alloyed onto a first current collector, a multilayered cathode layered onto a second current collector, and a separator disposed between the lithium metal anode and the multilayered cathode. In some examples, the lithium metal anode is electroplated onto the first current collector when the electrochemical cell is charged and stored within the multilayered cathode when the electrochemical cell is discharged. In some examples, multilayered cathode further includes an integrated ceramic separator.

Disclosed herein is a lithium ion battery which operates stably at high temperatures. The battery disclosed herein has a chemical composition amenable to long-term operation at elevated temperatures and employs a lithium-based cathode, a silicon-based anode, and a piperidinium-based electrolyte solution.

An all-solid secondary battery, including: a cathode; an anode; and a solid electrolyte layer disposed between the cathode and the anode, wherein the anode comprises an anode current collector; a first anode active material layer in contact with the anode current collector and comprising a first metal; a second anode active material layer disposed between the first anode active material layer and the solid electrolyte layer and comprising a carbon-containing active material; and a contact layer between the second anode active material layer and the solid electrolyte layer, and disposed such that the contact layer prevents contact between the second anode active material layer and the solid electrolyte layer, wherein the contact layer comprises a second metal, and has a thickness less than a thickness of the first anode active material layer.

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 or more embodiments, an integrated processing system operable to form a pre-lithiated electrode includes a reel-to-reel system operable to transport a continuous sheet of material through processing chambers and a pre-lithiation module defining a processing region and is adapted to process the continuous sheet of material. The pre-lithiation module contains a lithium metal target operable to contact and supplying lithium to the continuous sheet of material, a press coupled with the lithium metal target and operable to move the lithium metal target into contact with the continuous sheet of material, one or more ultrasonic transducers positioned in the processing region and operable to apply ultrasonic energy to the lithium metal target, and one or more heat sources positioned in the processing region and operable to heat the lithium metal target.