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939331

Sigma-Aldrich

Nickel(II) sulfate hexahydrate

new

≥99.99% trace metals basis

Synonym(e):

Nickelous Sulfate, Hexahydrate, Battery grade nickel sulfate, Nickel monosulfate hexahydrate, Nickel sulphate hexahydrate

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About This Item

Empirische Formel (Hill-System):
NiO4S · 6H2O
CAS-Nummer:
Molekulargewicht:
262.85
MDL-Nummer:

Typ

(High purity Salts)

Qualitätsniveau

Assay

≥99.99% trace metals basis
98-102% (EDTA, complexometric)

Form

powder or crystals

Verunreinigungen

≤1000 ppm trace metals basis

Farbe

faint blue to dark blue-green

pH-Wert

4.3-4.7 (20 °C, 100 g/L in water)

Löslichkeit

water: soluble

Dichte

2.07 g/cm3 at 20 °C

Anionenspuren

chloride (Cl-): ≤20 ppm

Kationenspuren

Al: <50 ppm
Ca: <50 ppm
Co: <50 ppm
Cu: <50 ppm
Fe: <50 ppm
K: <50 ppm
Mg: <50 ppm
Na: <50 ppm
Pb: <50 ppm
Zn: <50 ppm

InChI

1S/Ni.H2O4S.6H2O/c;1-5(2,3)4;;;;;;/h;(H2,1,2,3,4);6*1H2/q+2;;;;;;;/p-2

InChIKey

RRIWRJBSCGCBID-UHFFFAOYSA-L

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Allgemeine Beschreibung

Nickel(II) sulfate hexahydrate possesses a tetragonal crystal structure and is classified as a rare mineral called retgersite. This compound has a distinct blue-green color and demonstrates high solubility. It is insoluble in ethanol and ammonia. It is commonly used as a reliable source of Ni2+ ions for electroplating processes. Nickel(II) sulfate hexahydrate is a paramagnetic in nature.

Anwendung

Nickel-rich cathodes are widely favored due to their exceptional energy density and impressive rate capability for Lithioum-ion batteries. Nickel stands out for its ability to provide higher cell voltage, maintain a consistent voltage profile, and exhibit delocalized electron density, resulting in excellent electronic conductivity.

Therefore, Nickel(II) sulfate hexahydrate has been widely used as a key component for the synthesis of Cathode for Lithium-ion batteries.


- Spherical NCM 622 and Li[Ni0.9Co0.05Mn0.05]O2 (NCM 900505) were synthesized via a co-precipitation method using Nickel(II) sulfate hexahydrate. In order to achieve the desired energy density, it is necessary to maximize both the nickel content in the cathode and the cutoff voltage. []


- to synthesis single-crystal, Ni-rich NCM and polycrystalline NCM cathodes with various Ni content by coprecipitation method . These Ni-rich layered cathodes like NCM, NCA, and NCMA ([Ni1–x–yCox(Mn and/or Al)y]O2) are the top choices for powering upcoming electric vehicles. It is found that polycrystalline NCM cathodes are prone to intergranular microcracking during cycling, single crystal NCM cathodes demonstrate resilience against mechanical fracture, even under highly charged conditions or repeated cycles. Due to limited lithium-ion diffusion pathways, the electrochemical performance of single crystal -NCM cathodes, particularly in terms of capacity and cycling stability, is lower compared to that of polycrystalline-NCM cathodes. The difference in the electrochemical performance of single crystal -NCM and polycrystalline-NCM cathodes grows as the Ni fraction increases.

In addition, Nickel(II) sulfate hexahydrate is widely used for electroplating for producing metallic coatings.

Nickel(II) sulfate hexahydrate can also be used as a catalyst in:


-Pt50Ni50 catalysts supported on MCM-41 were produced using wet co-impregnation. These catalysts were then employed for hydrogenation reactions of benzene in gas phase. The morphology of the metal phase within the catalysts has a notable impact on the conversion of benzene to cyclohexane. Factors like reduction temperature, NaBH4 concentration, and reduction medium influence the particle morphology. []

Leistungsmerkmale und Vorteile

  • Water soluble
  • Medium purity (99.9%)
  • Low trace metals in ppm level
  • Cost effective Suitable for battery applications
  • Recycled catalyst

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1A Inhalation - Muta. 2 - Repr. 1B - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 1 Inhalation

Zielorgane

Respiratory Tract

Lagerklassenschlüssel

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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