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Merck
CN

342440

Cobalt(II) hydroxide

technical grade, 95%

Synonym(s):

Cobalt dihydroxide, Cobalt(2+) hydroxide, Cobaltous hydroxide

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About This Item

Linear Formula:
Co(OH)2
CAS Number:
21041-93-0
Molecular Weight:
92.95
NACRES:
NA.23
PubChem Substance ID:
24861066
UNSPSC Code:
12352302
EC Number:
244-166-4
MDL number:
MFCD00016015
Assay:
95%
Grade:
technical grade
Form:
powder

Key Documents

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Product Name

Cobalt(II) hydroxide, technical grade, 95%

InChI key

ASKVAEGIVYSGNY-UHFFFAOYSA-L

InChI

1S/Co.2H2O/h;2*1H2/q+2;;/p-2

SMILES string

O[Co]O

grade

technical grade

assay

95%

form

powder

reaction suitability

core: cobalt

density

3.597 g/mL at 25 °C (lit.)

application(s)

battery precursors
catalysts
material synthesis precursor

Quality Level

200

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Application

Cobalt(II) hydroxide can be used in the research and development :
  • As an additive in Ni-based rechargeable alkaline batteries, including Ni-Cd and Ni-MH batteries, to improve their electrochemical performance.   
  • To synthesize reduced graphene oxide/cobalt hydroxide (rGO/Co(OH)2) composite material, which exhibits enhanced electrochemical performance for supercapacitor applications.     
  • As a electrode material for high-performance supercapacitors. It exhibits high specific capacitance and long cycling stability, making it a promising electrode material for supercapacitors.

General description

Cobalt(II) hydroxide is a versatile compound with various applications in battery manufacturing, sensors, supercapacitor, and magnetic materials. It is also used as a key component in the production of rechargeable lithium-ion batteries. Additionally, it is also used in electrochemical reactions, including the oxidation of glucose and the oxygen evolution reaction (OER).

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Danger

Hazard Classifications

Acute Tox. 1 Inhalation - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Carc. 1B - Eye Irrit. 2 - Repr. 1B - Resp. Sens. 1B - Skin Sens. 1

Storage Class

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX2956
WXBF1034V
MKCS2140
WXBD9043V
MKCR2560

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Claudia Backes et al.
ACS nano, 13(6), 7050-7061 (2019-06-15)
Liquid phase exfoliation is a commonly used method to produce 2D nanosheets from a range of layered crystals. However, such nanosheets display broad size and thickness distributions and correlations between area and thickness, issues that limit nanosheet application potential. To

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