cobalt(3+),trisulfide
COBALT (IV) SULFIDE
CAS: 12013-10-4
Molecular Formula: CoS2
cobalt(3+),trisulfide - Names and Identifiers
cobalt(3+),trisulfide - Physico-chemical Properties
| Molecular Formula | CoS2 |
| Molar Mass | 123.06 |
| Density | 4.300 |
| Melting Point | decomposes at 269℃ [CRC10] |
| Storage Condition | Room Temprature |
| MDL | MFCD00064735 |
| Use | Cobalt sulfide chemical formula CoS. Molecular weight 90.99. There are two variants:(1) Alpha-COS: black amorphous powder. Soluble in hydrochloric acid. The hydroxyl sulfide high cobalt [Co(OH)S] is generated in the air. Obtained by introducing hydrogen sulfide into cobalt nitrate solution;(2)β-cos. Gray powder or red-silver-white octahedral crystals. The specific gravity was 5.45. Melting point 1,135 °c. Soluble in acid, insoluble in water. Obtained by heating stoichiometric amounts of cobalt powder and sulfur powder in a vacuum quartz sealed tube to 650 °c. |
cobalt(3+),trisulfide - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R43 - May cause sensitization by skin contact R50 - Very Toxic to aquatic organisms |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3077 9 / PGIII |
cobalt(3+),trisulfide - Cobalt sulfide nanosheet material and preparation method thereof
from Palm Bridge research
Application (patent) number:
CN201811082239.2
application date:
2018-09-17
Public/Announcement Number:
CN108821348A
Public/announcement date:
2018.11.16
applicant (patent):
Shaanxi University of Science and Technology
inventor:
Huang Jianfeng , he Shuwei , Li Wenbin , Cao Liyun , changweiwei , Wang Na , Fan Haixin , White
National and provincial code:
CN610112
Abstract:
A cobalt sulfide nanosheet material and A preparation method thereof, wherein cobalt acetate tetrahydrate is added to A mixed solution of isopropanol and ethylene glycol, and solution A is obtained by magnetic stirring; sodium sulfide is added to deionized water, and then ammonia water is added to obtain solution B; Solution A and solution B are mixed uniformly and then poured into A homogeneous hydrothermal reaction kettle for reaction; then, the cooled product after the reaction was taken out, washed and freeze-dried to obtain a cobalt sulfide nanosheet material. The raw materials used in the invention are easy to obtain and Green, the experimental reaction conditions are simple, the safety is high, and the particle size of the product obtained by adjusting the pH value of the solution is small, increase the active site of redox reaction in the process of sodium insertion and removal of cobalt sulfide, so as to improve the cycle stability of the battery.
Last Update：2024-01-02 23:10:35
cobalt(3+),trisulfide - Research progress of nanostructured cobalt sulfide as electrode materials for supercapacitors
from VIP Journal Professional Edition
Author:
Abstract:
nanostructured sulfides exhibit excellent electrochemical properties in supercapacitor applications due to their unique physical and chemical properties. In this paper, the research progress of cobalt sulfide as electrode material for supercapacitors at home and abroad in recent years is reviewed based on the variety of nano morphology of cobalt sulfide, the composite material with graphene and the direct growth on the conductive substrate. The preparation methods of cobalt sulfide nanostructures and the principle of improving their electrochemical properties are summarized. The composite with graphene and the direct growth on the conductive substrate are conducive to the structural stability and electron transport, and thus improve the rate performance and cycle stability. Finally, it is pointed out that the design and modification of the cobalt sulfide nano hollow structure, the composite method with graphene, the pretreatment method of the conductive substrate and the development of the nano structure conductive substrate as well as the simple and efficient design for commercialization, low-cost large-scale production routes will be the focus of future research.
stowed
Key words:
supercapacitor nanostructure electrochemistry
DOI:
10.16085/j.issn.1000-6613.2016.11.025
cited:
year:
2016
Last Update：2023-08-16 22:05:47
cobalt(3+),trisulfide - Nitrogen and sulfur co-doped porous carbon covalently wrapped cobalt sulfide nanocomposite electro-catalytic hydrogen evolution
Author:
Shen Mengxia , Akron , Li le hui
Abstract:
Large-scale preparation of hydrogen by electrolysis (photo-electrolysis) water is the most potential technology for the development and utilization of clean energy-hydrogen energy. In order to reduce the energy consumption of electrolysis or photo-electrolysis, it is of great significance to develop non-noble metal materials with electrocatalytic activity for hydrogen evolution. In recent years, non-noble post-transition metal chalcogenides have received great attention due to their potential applications in energy storage and electrocatalysis [1-2]. Recently, we successfully synthesized a nitrogen-sulfur co-doped porous carbon covalently wrapped cobalt sulfide nanocomposite (CoS @ N/S-PC), which compared with the single cobalt sulfide, porous carbon, or a physical mixture of the two, exhibiting the lowest hydrogen evolution overpotential in an alkaline medium. Covalent attachment between cobalt sulfide nanoparticles and porous carbon is helpful to accelerate electron transport and mass transfer processes, and can prolong the catalytic life of electrode materials.
Key words:
hydrogen evolution electrocatalysis cobalt sulfide porous carbon
meeting name:
annual meeting of Chinese Chemical Society
Meeting Time:
2014
Last Update：2023-08-16 22:05:47
cobalt(3+),trisulfide - Cobalt-copper sulfide treatment method
from Google Patents
Public/Announcement Number:
CN102465202 A
Public/announcement date:
12 November 2010
inventor:
cited:
Abstract:
The invention is applicable to the technical field of mineral treatment, and provides a cobalt-copper sulfide treatment method, which comprises the following steps: grinding cobalt-copper sulfide, according to the mass ratio of total cobalt copper and sulfite or sulfite in cobalt copper sulfide 1:1-3, sulfuric acid or sulfite is mixed, acidic solution is added, the pH value of the system is adjusted to 0.5-1, and the temperature is 65-80 ℃, reaction for more than 1 hour; Maintain the pH value and temperature of the system, according to the ratio of the total mass of cobalt and copper remaining in the system to the mass of chloric acid or chlorate 1:1-3, add chloric acid or chlorate to continue the reaction for more than 1 hour. In the treatment method of the present invention, the first-stage leaching is carried out by using sulfurous acid or sulfite, and the second-stage leaching is carried out by using chloric acid or chlorate to fully Leach cobalt copper in the cobalt copper sulfide, the leaching efficiency of cobalt and copper from cobalt-copper sulfide ore is greatly improved. At the same time, sulfurous acid or its salt is used as the oxidant and reducing agent in the first stage of leaching, and chloric acid or its salt is used as the oxidant in the second stage, so that the treatment cost is greatly reduced.
Last Update：2023-08-16 22:05:47
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