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933953

Sigma-Aldrich

Sodium difluoro(oxalato)borate

greener alternative

≥99%, battery grade

Sinonimo/i:

NaDFOB, NaFOB, Sodium difluoro(ethanedioato)borate

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About This Item

Formula empirica (notazione di Hill):
C2BF2NaO4
Numero CAS:
Peso molecolare:
159.82
Codice UNSPSC:
12352104
NACRES:
NA.21

Grado

battery grade

Livello qualitativo

Descrizione

Application: Battery manufacturing

Saggio

≥99%

Forma fisica

powder

Caratteristiche più verdi

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

Impurezze

≤0.2% H2O

Anioni in tracce

chloride (Cl-): ≤50 ppm
sulfate (SO42-): ≤20 ppm

Cationi in tracce

Ca: ≤20 ppm
K: ≤20 ppm
Mg: ≤20 ppm

applicazioni

battery manufacturing

Categoria alternativa più verde

Stringa SMILE

O=C1C(O[B-](F)(F)([Na+])O1)=O

Descrizione generale

Sodium difluoro(oxalato)borate, also referred to as NaDFOB, is a high-purity and low-water content white crystalline powder that has become increasingly popular in the field of battery technology. NaDFOB is the sodium equivalent of lithium difluoro(oxalato)borate and is soluble in polar organic solvents (>1.0 M in carbonates), making it ideal for use in battery electrolytes. It exhibits excellent electrochemical stability, surpassing NaClO4, with NaDFOB-based carbonate electrolytes showing electrochemical stability windows above 5.5V vs Na+/Na. Our NaDFOB is manufactured to the highest standards to ensure its purity, enabling it to be used effectively in a wide range of battery applications.
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Applicazioni

Sodium-difluoro(oxalato)borate, anhydrous and battery-grade with a purity of ≥99%, is a versatile electrolyte additive for sodium-ion batteries (SIBs). NaDFOB demonstrates superior compatibility with a range of solvents commonly employed in SIBs, unlike NaClO4 and NaPF6, which exhibit solvent-dependent performances. Additionally, NaDFOB is stable and does not produce any toxic or hazardous substances upon contact with air and water. A recent study found that the incorporation of NaDFOB as an additive significantly enhances the charge-discharge capacity and cycling performance of graphite anodes. Another study suggests that NaDFOB contributes to the formation of a stable solid electrolyte interphase (SEI) film on the surface of graphite anodes, resulting in a highly stable electrolyte/electrode interface. With these benefits, Sodium-difluoro(oxalato)borate is a promising solution for improving the performance and stability of sodium-ion batteries in various applications.

Pittogrammi

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Avvertenze

Warning

Indicazioni di pericolo

Classi di pericolo

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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Sodium Difluoro(oxalato)borate as An Electrolyte Additive to Improve the Electrochemical Performance of Graphite Anode
Yang-yang Yao, et al.
International Journal of Electrochemistry, 21, 387-392 (2015)

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