Kupfermonosulfid (CuS) Description
Copper sulphides refer to a family of chemical compounds and minerals with the formula CuSy. These compounds occur in both naturally formed minerals and synthetic materials. Some copper sulphides serve as economically important ores.
Among the known copper sulphide minerals are copper sulphide Cu2S (Chalkosin) and copper monosulphide CuS (Covellit). In the mining industry, the minerals Bornite or Chalcopyrite, which consist of mixed copper–iron sulphides, are often designated as copper sulphides. In chemistry, a binary copper sulphide is any chemical compound composed solely of copper and sulphur. Regardless of origin, copper sulphides exhibit compositions ranging from 0.5 ≤ Cu/S ≤ 2, including numerous non‐stoichiometric compounds.
Covellit (also known as Covellin) is a rare copper sulphide mineral with the formula CuS. This indigo‐blue mineral is typically a secondary mineral that occurs in limited quantities. Although it is not an important copper ore, it is well known among mineral collectors.
Kupfermonosulfid (CuS) Specification
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Colour
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Indigo blue or dark. Typically exhibits strong iridescence; may vary from brass‐yellow to deep red.
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Crystal Form
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Thin, platy, hexagonal crystals and rosettes. May also occur in massive or granular forms.
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Tenacity
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Flexible.
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Hardness on the Mohs Scale
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1.5 – 2
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Lustre
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Submetallic; tends to a resinous to dull appearance.
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Streak
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Lead grey.
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Diaphaneity
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Opaque.
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Specific Gravity
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4.6 – 4.8
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Optical Properties
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Uniaxial (+).
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Refractive Index
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nω = 1,450 nε = 2,620
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Pleochroism
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Pronounced; from deep blue to pale blue.
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Meltability
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2.5
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Other Characteristics
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Mica‐bearing cleavage.
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Kupfermonosulfid (CuS) Applications
1. Semiconductor Materials: Kupfermonosulfid is employed in the fabrication of semiconductor materials, particularly in thin‐film solar cells. It absorbs sunlight and converts it into electrical energy, thereby acting as a light‐sensitive material.
2. Lubricant Additives: Kupfermonosulfid is used as an additive in lubricants to improve performance. It reduces friction and wear between moving parts, thereby increasing efficiency and machine lifespan.
3. Optoelectronic Devices: Kupfermonosulfid is utilised in the production of optoelectronic devices, including light‐emitting diodes (LEDs) and photodetectors. It possesses defined electrical and optical properties that justify its application.
4. Gas Sensors: Kupfermonosulfid is applied in the manufacture of gas sensors. It is capable of detecting gases, including hydrogen sulphide, ammonia, carbon dioxide and nitrogen dioxide. These sensors are used in industry, for environmental monitoring and in safety devices.
5. Catalysts: Kupfermonosulfid functions as a catalyst in various chemical reactions. It increases reaction rates and enhances process efficiency in reactions such as hydrogenation, desulphurisation and oxidation.
6. Pigments: Kupfermonosulfid is used as a pigment in the manufacture of ceramics, paints and plastics. It imparts a black or dark blue colour and finds application in decorative coatings, printing inks and dyes.
7. Electrochemical Energy Storage: Kupfermonosulfid has been examined as a potential electrode material for lithium‐ion batteries. Its high theoretical capacity, good electrochemical stability and wide availability render it suitable for these applications.
Kupfermonosulfid (CuS) Packaging
Our Kupfermonosulfid products are handled with care to minimise damage during storage and transportation. This practice ensures that the product retains its original quality.
Converters & Calculators
