940194

Lithium peroxide

99.9% trace metals basis, battery grade

• Synonym(s): Dilithium peroxide, Lithium(I) peroxide
• Empirical Formula (Hill Notation): Li₂O₂
• CAS Number: 12031-80-0
• Molecular Weight: 45.88
• MDL number: MFCD00016184
• UNSPSC Code: 12352304
• PubChem Substance ID: 24861460

Properties

• grade: battery grade
• Quality Level: 100
• Assay: 99.9% trace metals basis
• form: powder
• solubility: acetic acid: soluble; alcohol: insoluble; water: soluble
• density: 2.32 g/cm³ (lit.)
• application(s): battery manufacturing
• SMILES string: [Li+].[Li+].[O-][O-]
• InChI: 1S/2Li.O2/c;;1-2/q2*+1;-2
• InChI key: HPGPEWYJWRWDTP-UHFFFAOYSA-N

Description

General description

Our battery grade lithium peroxide product is a high-purity material. It meets a minimum purity of 99.9%, as determined by trace metals analysis, and is processed to a particle size after passing through a sieve with 100-mesh openings, roughly 150 microns in diameter.
Lithium peroxide is an inorganic compound with the composition Li₂O₂ that takes the form of a white powder. Chemically, lithium peroxide is strongly basic and a powerful oxidizing agent. At room temperature, it is stable in air, showing neither hygroscopic properties nor a tendency to absorb carbon dioxide. At elevated temperatures in air, Li₂O₂ and CO₂ establish a reversible chemical equilibrium with lithium carbonate and oxygen. At even higher temperatures, ~340-450 °C, lithium peroxide decomposes to lithium oxide (Li₂O) and oxygen gas.

Application

The primary use of our high-purity lithium peroxide is as a synthetic precursor in the production of high-purity lithium oxide and other lithium metal oxides. In battery research, lithium peroxide is a key precursor for lithium metal oxides, especially lithium-rich oxides with the disordered rock salt structure, which serve as cathode materials in lithium-ion batteries. Often, lithium peroxide is used in mechanochemical reactions, in which lithium peroxide is ball-milled with one or more metal oxides, followed by sintering at elevated temperatures. In this application, the trace metals purity of our lithium peroxide is critical, as the purity of the precursors directly influences the purity of the final product. Additionally, because of its high oxygen content by weight and its facile redox chemistry, lithium peroxide is also used in air purifiers to remove carbon dioxide, most notably on spacecraft, when weight is important. The reversible lithium peroxide reaction with carbon dioxide to form lithium carbonate and oxygen gas is also the chemical basis for lithium-air batteries.

Safety Information

• Pictograms: GHS03,GHS05
• Signal Word: Danger
• Hazard Statements: H272,H314
• Precautionary Statements: P210 - P220 - P260 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Ox. Sol. 2 - Skin Corr. 1A
• Storage Class Code: 5.1B - Oxidizing hazardous materials
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable