Active material: A material that intervenes the electrode reaction of the battery.
Additive: A substance that is added to something in small quantities to improve or preserve it.
Anode: An electrode in an electrochemical cell on which oxidation takes place. It releases electrons on discharge.
Ball-milling: A process where a powder mixture is placed in a ball mill and is subjected to a high-energy collision from a number of balls. A ball mill is practically a type of grinder.
Battery cell: The basic electrochemical unit of a battery, consisting of a single anode and cathode, separated by the electrolyte.
Battery module: A number of battery cells connected in either series or parallel.
Battery pack: A number of battery modules.
Binder: Materials responsible for holding the active material particles within the electrode of a battery.
Calendering: A process where the electrodes are pressed by rollers to a right porosity level.
Capacity: The electrical energy of a battery, measured in ampere-hours (Ah). It is the leading health indicator of a battery.
Cathode: An electrode in an electrochemical cell on which reduction occurs through absorption of electrons.
Electrode: A conductor in a cell in which an electrochemical reaction takes place.
Electrolyte: A non-metallic conductor of electricity which is placed between anode and cathode of a battery.
Energy transition: A structural long-term change in energy systems.
Jelly-roll: A common design used for cylindrical rechargeable batteries, where insulating sheet, anode, separator and cathode are layered, rolled up and inserted into a cylindrical casing.
Notching: A process where sheet metal is cut on angle sections or tube.
Pouch cell: A battery cell design where conductive foil-tabs are welded to the electrodes and are brought to the outside in a sealed way.
Precursors: A compound that participates in a chemical reaction, which produces another compound.
Prismatic cell: A battery cell design where many positive and negative electrodes are wrapped together in a package.
Rare earths: A rare earth element or metal is defined as one of the fifteen lanthanides in the periodic table as well as scandium and yttrium.
Refining: A process where impurities and/or unwanted elements are removed from a substance.
Separator: A solid layer of a battery cell, that separates anode from cathode.
Single-sheet stacking: A process where electrode sheets are stacked repeatedly in an order of anode, separator and cathode, and then fastened.
Solid Electrolyte Interface (SEI): A film on the surface of the anode, which is composed of lithium carbonate and lithium oxide.
Solvent: A substance that is able to dissolve other substances.
Substrate: Refers to an underlying substance or layer.
Supply chain: A system or network of people, activities, organizations, resources and information involved during the production and distribution of a product or service.
Wetting: The ability of a liquid to form interface with solid surfaces.