2023
DOI: 10.1021/acs.jpcc.3c03065
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Two-Dimensional SnS and SnSe as Hosts of K-Ion Storage: A First-Principles Prediction

Abstract: Potassium ion batteries (KIBs) have attracted remarkable consideration due to their intrinsic safety and huge availability of potassium. However, the large size of the K ion and low charge−discharge efficiency are the main obstacles to the progress of KIBs. To overcome these hurdles, we chose SnS and SnSe monolayers as K anodes for KIBs due to their layered structural assemblies, wider surface area to accommodate more K content, and high thermal stabilities. First-principles simulations were carried out to stu… Show more

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Cited by 5 publications
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“…The theoretical capacity of 691.64 mA h g −1 for Na on Ti 2 BSO is much higher than those of monolayer Ti 2 B (503.069 mA h g −1 ), 23 Ti 2 B 2 (342 mA h g −1 ), 20 Ta 2 CS 2 (367.23 mA h g −1 ), 47 and WSSe (371.5 mA h g −1 ). 48 Besides, for K, the theoretical capacity of 537.75 mA h g −1 is higher than that of other 2D materials, such as SnS (355 mA h g −1 ), 49 Ti 2 CS 2 (233.9 mA h g −1 ), 50 WSSe (156.0 mA h g −1 ), 48 Nb 2 S 2 C (157.60 mA h g −1 ), 45 and Ti 2 CO 2 (336.0 mA h g −1 ). 51…”
Section: Resultsmentioning
confidence: 93%
“…The theoretical capacity of 691.64 mA h g −1 for Na on Ti 2 BSO is much higher than those of monolayer Ti 2 B (503.069 mA h g −1 ), 23 Ti 2 B 2 (342 mA h g −1 ), 20 Ta 2 CS 2 (367.23 mA h g −1 ), 47 and WSSe (371.5 mA h g −1 ). 48 Besides, for K, the theoretical capacity of 537.75 mA h g −1 is higher than that of other 2D materials, such as SnS (355 mA h g −1 ), 49 Ti 2 CS 2 (233.9 mA h g −1 ), 50 WSSe (156.0 mA h g −1 ), 48 Nb 2 S 2 C (157.60 mA h g −1 ), 45 and Ti 2 CO 2 (336.0 mA h g −1 ). 51…”
Section: Resultsmentioning
confidence: 93%