934704

Sodium manganese oxide

Na_0.44MnO₂, powder, ≥99% trace metals basis

• Synonym(s): Sodium manganite
• Empirical Formula (Hill Notation): Na_0.44MnO₂
• Molecular Weight: 97.05
• UNSPSC Code: 26111700
• NACRES: NA.21

Properties

• grade: battery grade
• Quality Level: 100
• description: Capacity: 110 mAh/g; Description/Nominal Voltage: 2.5 V vs Na/Na⁺
• assay: ≥99% trace metals basis
• form: powder
• composition: Na_0.44MnO₂
• greener alternative product characteristics: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• particle size: 1-2 μm
• density: 4.3 g/cm³ (lit.)
• application(s): battery manufacturing
• greener alternative category: Enabling

Description

General description

Sodium manganese oxide is a powdery black substance, which crystallizes in an orthorhombic tunnel-type structure. The structure’s interconnected S-shaped tunnels offer wide diffusion paths for fast and reversible sodium intercalation.

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Application

Our high-purity sodium manganese oxide, Na_0.44MnO₂, powder is suitable and tested for use as a cathode material in Na-ion batteries. Na_0.44MnO₂ is promising for use in sodium-ion batteries because of its unique tunnel structure, which facilitates excellent cycle and rate performance. For example, our sodium manganese oxide showed a large capacity (experimentally 110 mAh g⁻¹ at 0.1C), even at fast charge rates (80 mAh g^-1 at 5C, 72%). In addition, Na_0.44MnO₂ shows excellent stability with NaClO₄ and NaPF₆-based organic electrolytes and also aqueous electrolytes.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable