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934739

Sigma-Aldrich

Sodium manganese oxide

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electrode sheet, aluminum substrate, size 5 in. × 10 in.

Synonyme(s) :

Manganese oxide cathode, Sodium-ion battery cathode

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About This Item

Formule empirique (notation de Hill):
Na0.44MnO2
Poids moléculaire :
97.05
Code UNSPSC :
26111700
Nomenclature NACRES :
NA.21

Matériaux

aluminum substrate

Niveau de qualité

Qualité

battery grade

Description

2.5 V vs Na/Na+
Application: Battery Manufacturing

Pureté

≥98%

Forme

sheet

Composition

Active material loading 8.6 mg/cm2 ± 5%

Caractéristiques du produit alternatif plus écologique

Design for Energy Efficiency
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Taille

5 in. × 10 in.

Épaisseur

16 μm , aluminum current collector
25-50 μm
72-80 μm , excluding current collector

Taille des particules

1-2 μm (active material characteristic)

Capacité

0.90 mAh/cm2±5 % (Areal capacity)

Application(s)

battery manufacturing

Autre catégorie plus écologique

Description générale

Sodium manganese oxide (Na0.44MnO2) electrode sheet is a ready-to-use cathode for sodium-ion battery research. The film is 5 inches x 10 inches (127 mm x 254 mm) and cast single-sided on a 16 µm thick aluminum foil current collector. The composition is 90% sodium manganese oxide (Na0.44MnO2), 5% Poly(vinylidene fluoride) [PVDF] and 5% carbon black. The active material is tunnel-type sodium manganese oxide, which offers fast sodium ionic conductivity and high chemical stability. PVDF acts as binder due to its thermal and electrochemical stability and carbon black boosts the electronic conductivity.
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Application

The primary application of our sodium manganese oxide (Na0.44MnO2) electrode sheet is as a cathode for sodium-ion battery research. Manganese-based compounds are widely investigated as cathode materials for rechargeable Na-ion batteries and, in particular, tunnel-type sodium manganese oxide (Na0.44MnO2) is a promising cathode material due to its high capacity, low cost, and non-toxicity. In addition, its unique tunnel structure 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, Na0.44MnO2 shows excellent stability with a variety of electrolytes including NaClO4 and NaPF6-based organic electrolytes.

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


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Consulter la Bibliothèque de documents

Electrode Materials for Sodium-Ion Batteries
Kim H, et al.
Advanced Energy Materials, 6 (2016)
High-Performance Na0.44MnO2 Slabs for Sodium-Ion Batteries Obtained through Urea-Based Solution Combustion Synthesis
Ferrara C, et al.
Lithium-Ion Batteries, 4 (2018)
Xingde Xiang et al.
Advanced materials (Deerfield Beach, Fla.), 27(36), 5343-5364 (2015-08-15)
Sodium-ion batteries (SIBs) receive significant attention for electrochemical energy storage and conversion owing to their wide availability and the low cost of Na resources. However, SIBs face challenges of low specific energy, short cycling life, and insufficient specific power, owing

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