252 articles
1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
EMIM TFSI, also known as EMIM NTf2, is a hydrophobic room-temperature ionic liquid of the imidazolium family, valued for low viscosity, high conductivity, and a wide electrochemical window.
6K Energy
6K Energy is the battery cathode materials division of American advanced materials company 6K Inc., producing cathode active material with its UniMelt microwave plasma system at a plant in Jackson, Tennessee.
Allkem
Allkem Limited was an Australian lithium mining and chemicals company formed in 2021 by the merger of Orocobre and Galaxy Resources, with assets in Argentina, Australia, and Japan.
Alloying anode
An alloying anode is a battery negative electrode of metals like silicon and tin that stores charge by forming alloys with lithium or sodium ions.
Ambatovy
Ambatovy is a large nickel and cobalt mining and refining operation in eastern Madagascar, the largest-ever foreign investment in the country at over $8 billion.
American Battery Technology Company
American Battery Technology Company (ABTC) is a Nevada-based battery materials company recycling lithium-ion batteries and extracting lithium, with a recycling plant in McCarran and a large lithium deposit at Tonopah Flats.
Anion redox
Anion redox is a charge-compensation mechanism in battery cathodes that stores charge on oxide anions (O²⁻) as well as transition-metal cations, enabling higher energy density in Li-rich and Na-rich oxides.
Anti-perovskite lithium-ion conductors
Anti-perovskite lithium-ion conductors are lithium-rich solid electrolytes with a perovskite-inverted structure, typified by Li₃OCl, valued for high ionic conductivity, stability against lithium metal, and use in all-solid-state batteries.
Anti-perovskite solid electrolyte
An anti-perovskite solid electrolyte is a crystalline ionic conductor, built mainly from lithium, oxygen, and chlorine or bromine, in which ions occupy inverted perovskite lattice positions; the prototype is Li₃OCl.
Arcadium Lithium
Arcadium Lithium was a lithium chemicals producer created in January 2024 by the merger of Livent and Allkem, then acquired by Rio Tinto for $6.7 billion in 2025.
Argyrodite sulfide electrolyte
Argyrodite sulfide electrolyte is a crystalline lithium-ion conductor of formula Li₆PS₅X (X = Cl, Br, I), first reported in 2008 and used as the solid electrolyte in all-solid-state batteries.
Artificial solid electrolyte interphase
An artificial solid electrolyte interphase (Art-SEI) is a protective layer deliberately applied to a battery anode to replace the natural interphase, mainly for lithium metal anodes, where it suppresses dendrites and extends cycle life.
Bangpu Ni-Mn-Co plant
The Bangpu Ni-Mn-Co plant is a battery recycling operation of Brunp, CATL's recycling subsidiary, recovering nickel, manganese, and cobalt from spent batteries at a reported 99.6% rate.
Battery electrolyte
A battery electrolyte is the ion-conducting medium between a battery's two electrodes, carrying ions during charge and discharge, ranging from sulfuric acid to organic solvents.
Battery Resourcers
Battery Resourcers was an American lithium-ion battery recycling company founded in 2015 as a Worcester Polytechnic Institute spinoff in Massachusetts, renamed Ascend Elements in January 2022.
Battery separator
A battery separator is a porous, insulating membrane between a battery cell's anode and cathode that prevents electronic contact while allowing ion transport, strongly affecting safety and cycle life.
Biomass-derived hard carbon
Biomass-derived hard carbon is a non-graphitizable carbon anode material for sodium-ion batteries, made by pyrolyzing renewable waste precursors such as lignin, cellulose, nutshells, and fruit peels.
Brunp Recycling
Brunp Recycling, a Chinese battery recycling company founded in 2005 in Foshan, Guangdong, has been a subsidiary of battery maker CATL since 2015 and recycles lithium-ion batteries.
BTR New Material Group
BTR New Material Group Co., Ltd. is a Chinese manufacturer of anode and cathode materials for lithium-ion batteries, headquartered in Shenzhen and the world's leading anode producer since 2010.
Cathode electrolyte interphase
The cathode electrolyte interphase (CEI) is a thin film of electrolyte decomposition products that forms on the cathode of a lithium battery during operation, analogous to the anode-side SEI.
Cathode recycling
Cathode recycling is the recovery of cathode material or its metals from spent lithium-ion batteries, via pyrometallurgy, hydrometallurgy, and direct recycling that preserves the cathode structure.
Chloride solid electrolyte
A chloride solid electrolyte is a lithium- or sodium-ion-conducting inorganic compound, typically Li₃MCl₆, used in all-solid-state batteries and valued for high ionic conductivity and voltage stability.
Chunbo
Chunbo Co., Ltd. is a South Korean fine-chemicals company, established in 2007 and headquartered in Chungju, that makes lithium salts and additives for battery electrolytes.
Cirba Solutions
Cirba Solutions is an American battery recycling and materials company in Charlotte, North Carolina, formed in 2022 that recovers lithium, nickel, and cobalt from spent batteries.
CNGR
CNGR, fully CNGR Advanced Material Co., Ltd., is a Chinese company founded in 2014 that supplies cathode precursors and other battery materials, ranked world's largest ternary precursor supplier from 2020 to 2024.
CNGR Advanced Material
CNGR Advanced Material is a Chinese company founded in 2014 and headquartered in Tongren, Guizhou, that produces cathode precursors and nickel, cobalt, phosphorus, and sodium battery materials.
Co-intercalation in graphite
Co-intercalation in graphite is a battery electrode process in which metal ions enter graphite together with their solvent molecules, enabling graphite anodes for sodium-ion batteries.
Cobalt-free cathode
A cobalt-free cathode is a lithium-ion battery positive electrode with no cobalt, replacing cobalt-bearing NMC and NCA chemistries to cut cost, toxicity, and supply-chain risk.
Cobalt-free LNMO spinel cathode
The cobalt-free LNMO spinel cathode, LiNi0.5Mn1.5O4, is a lithium-ion battery cathode that discharges at 4.7 V for high energy density, using manganese and nickel instead of cobalt.
Concentrated electrolyte
A concentrated electrolyte is a battery electrolyte with salt so concentrated that anions join the solvation shell, changing interfacial chemistry and enabling higher-voltage lithium and sodium batteries.