Draft:Disordered rock salt
Class of materials
From Wikipedia, the free encyclopedia
Disordered rock salts (DRX) are a class of materials bearing the rock salt crystal structure with a disordered arrangement of cations. They are most notable for their potential uses in lithium-ion battery cathodes.[1]
 | Review waiting, please be patient.
This may take 8 weeks or more, since drafts are reviewed in no specific order. There are 2,942 pending submissions waiting for review.
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
Reviewer tools
|
 | This material-related article is a stub. You can help Wikipedia by adding missing information. |
Structure
The atoms in disordered rock salts form a rock-salt structure,[1] in which the cations are arranged in a face-centered cubic (FCC) lattice with the anions occupying the octahedral holes.[2] The associated space group is Fm3m or 225, and the Strukturbericht designation is B1.[3]
DRX are distinct from other rock salts in that there are multiple different cations present in the crystal structure. Cations and anions (typically oxygen anions) are still present in equal numbers, but each cation site may be occupied one of several cations. These cations are present in a fixed ratio, but they are randomly distributed with no long-range order.[4]
Use in lithium-ion batteries
DRX are most notable for their potential uses in lithium-ion battery cathodes. Current lithium-ion battery cathodes, such as nickel-manganese-cobalt (NMC) or nickel-cobalt-aluminum (NCA) based cathodes, rely heavily on cobalt and nickel metals, which are scarce and expensive.[5][6] Cobalt is also toxic, and cobalt mining operations are often associated with human rights violations and environmental damage.[5]
DRX offer a potential solution to many of these concerns. For example, manganese and titanium based DRX show promise as lithium-ion battery cathodes. These metals are both more abundant and less expensive than cobalt and nickel, addressing some of the issues with current cathodes.[1][5][6][7]