AI Article Synopsis
- - Intercalation reactions depend on how the electronic and structural properties of host (like TaS) and guest materials (like divalent ions) interact, making it harder for divalent ions like Mg to intercalate compared to monovalent ions.
- - This study explores the cointercalation of Mg and hydrogen (H) into TaS to produce bulk polycrystalline MgHTaS, where hydrogen can be removed by heating at around 400 °C without changing the crystal structure.
- - The research also investigates how the superconducting properties relate to electronic carrier density using both theoretical calculations and experiments, highlighting the benefits of using hydrides for intercalation reactions.
Article Abstract
Intercalation reactions are highly dependent on the electronic and structural relationships between host and guest materials. It is difficult for divalent ions, such as Mg, to undergo intercalation reactions compared with monovalent cations. However, further development of synthetic techniques for controlling divalent ions is strongly demanded to advance applied chemistry and fundamental physics. In this study, the cointercalation of Mg and H into the transition-metal chalcogenide TaS was utilized to obtain bulk polycrystalline MgHTaS. Introduced H can be extracted via postannealing at approximately 400 °C without altering the crystal structure. This study clarified the relationship between superconducting properties and electronic carrier density from the perspectives of calculations and experiments, along with the advantages of using hydride as a multivalent intercalation reaction.
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| http://dx.doi.org/10.1021/jacs.4c07294 | DOI Listing |
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