Provided is pouch battery including an electrode assembly, and a case in which the electrode assembly is sealed and housed; the electrode assembly including a stacked structure of a sheet cathode, a sheet separator, and a sheet anode; the sheet cathode including a positive electrode active material disposed on a current collector; the sheet anode is thin conductive sheet on which lithium metal reversibly deposits on a surface thereof during discharging; the sheet anode being made of a conductive material other than lithium and having a surface substantially free from lithium metal prior to charging the battery. The pouch battery design is flexible and lightweight and provides high power density, making it a suitable replacement for conventional lithium-ion primary batteries and thermal batteries in many applications. Power can be further increased by the application of external compression. Additives and formation conditions can be tailored for forming a solid-electrolyte interface (SEI).

The invention relates to a deformable accumulator comprising: a. a first and a second substrate (1,1′), b. at least one first current collector (2a, 2b, . . . ) deposited on the first substrate, along a curved line, c. at least one second current collector (2a′, 2b′, . . . ) deposited on the second substrate, along a second curved line, d. an anode consisting of a first set of columns (4) deposited on the first current collector (2a′, 2b′, . . . ), e. a cathode consisting of a second set of columns (4′) deposited on the second current collector (2a′, 2b′, . . . ), f. an electrolyte allowing the transfer of the ionic species, the faces of the first and the second substrate facing each other and defining a space (5) occupied by the electrolyte in which the columns of the anode (4) and the cathode (4′) are submerged.

This invention relates to the field of energy storage devices, and especially electrochemical energy storage devices including electrolytes comprising an ionic liquid, one or more solvents, and one or more salts of a Group 2 element. Effects on electrochemical performance of the electrolyte of each of the components of the electrolyte were systematically determined. In addition, interactions between the electrolytes and separator films were dissected to optimize electrochemical performance of coin cell batteries.

Disclosed are a lithium-iron(II) disulfide battery and a process for preparing the same. The batter includes a shell, a cap, electrolyte and a cell. The shell is connected with the cap to form a closed cavity in which the electrolyte and cell are accommodated; the cell includes a positive electrode ring, a separator, a spacer, a negative electrode lithium sheet, a current collector grid and a steel strip. The negative electrode lithium sheet is set in the positive electrode ring; the negative electrode lithium sheet is separated from the positive electrode ring by the separator; one side of the current collector grid is connected with the negative electrode lithium sheet, and the other side is connected with the cap via the steel strip; the spacer is set between the positive electrode ring and the cap.

Provided is pouch battery including an electrode assembly, and a case in which the electrode assembly is sealed and housed; the electrode assembly including a stacked structure of a sheet cathode, a sheet separator, and a sheet anode; the sheet cathode including a positive electrode active material disposed on a current collector; the sheet anode is thin conductive sheet on which lithium metal reversibly deposits on a surface thereof during discharging; the sheet anode being made of a conductive material other than lithium and having a surface substantially free from lithium metal prior to charging the battery. The pouch battery design is flexible and lightweight and provides high power density, making it a suitable replacement for conventional lithium-ion primary batteries and thermal batteries in many applications. Power can be further increased by the application of external compression. Additives and formation conditions can be tailored for forming a solid-electrolyte interface (SEI).

Provided are electrochemical cells and methods of manufacturing these cells. An electrochemical cell comprises a positive electrode and an electrolyte layer, printed over the positive electrode. In some examples, each of the positive electrode, electrolyte layer, and negative electrode comprises an ionic liquid enabling ionic transfer. The negative electrode comprises a negative active material layer (e.g., comprising zinc), printed over and directly interfacing the electrolyte layer. The negative electrode also comprises a negative current collector (e.g., copper foil) and a conductive pressure sensitive adhesive layer. The conductive pressure sensitive adhesive layer is disposed between and adhered to, directly interfaces, and provides electronic conductivity between the negative active material layer and the negative current collector. In some examples, the conductive pressure sensitive adhesive layer comprises carbon and/or metal particles (e.g., nickel, copper, indium, and/or silver). Furthermore, the conductive pressure sensitive adhesive layer may comprise an acrylic polymer, encapsulating these particles.

Provided are electrochemical cells and methods of manufacturing these cells. An electrochemical cell comprises a positive electrode and an electrolyte layer, printed over the positive electrode. In some examples, each of the positive electrode, electrolyte layer, and negative electrode comprises an ionic liquid enabling ionic transfer. The negative electrode comprises a negative active material layer (e.g., comprising zinc), printed over and directly interfacing the electrolyte layer. The negative electrode also comprises a negative current collector (e.g., copper foil) and a conductive pressure sensitive adhesive layer. The conductive pressure sensitive adhesive layer is disposed between and adhered to, directly interfaces, and provides electronic conductivity between the negative active material layer and the negative current collector. In some examples, the conductive pressure sensitive adhesive layer comprises carbon and/or metal particles (e.g., nickel, copper, indium, and/or silver). Furthermore, the conductive pressure sensitive adhesive layer may comprise an acrylic polymer, encapsulating these particles.

An electrochemical reactor includes positive and negative electrodes. A conductive and/or dielectric liquid is provided between the positive and negative electrodes. A first isolation member provided on the positive electrode isolates the positive electrode from the liquid, and a second isolation member provided on the negative electrode isolates the negative electrode from the liquid. The first and second isolation member each includes a liquid-repellent porous membrane. The reactor further includes a pressure-applying member which pressurizes the liquid to fill the pores of the first and second liquid-repellent porous membranes with the liquid, thereby causing an electrochemical reaction involving the positive and negative electrodes.

Fabricating the electrode blank includes baking a blank precursor. The blank precursor contains the components of an electrode active medium including an active material. Fabricating the electrode blank also includes performing one or more post-bake calender operations on the blank precursor after baking the blank precursor. Each post-bake calender operation includes calendering the blank precursor.

The present invention provides a solid-liquid electrolyte in the form of a gel which comprises an organic carbonate-based solvent, precipitated silica, at least one ionically conducting salt and optionally additives. The invention also relates to batteries containing said solid-liquid electrolyte. The solid-liquid electrolyte according to the present invention can improve the electrochemical properties of batteries and prevent electrolyte leakage thus reducing the risk of corrosion of the batteries.