Reaction Mechanism and Performance of Innovative 2D Germanane-Silicane Alloys: SixGe1-xH Electrodes in Lithium-Ion Batteries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43929963" target="_blank" >RIV/60461373:22310/24:43929963 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/24:43929963
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/advs.202308955" target="_blank" >https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/advs.202308955</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/advs.202308955" target="_blank" >10.1002/advs.202308955</a>
Alternative languages
Result language
angličtina
Original language name
Reaction Mechanism and Performance of Innovative 2D Germanane-Silicane Alloys: SixGe1-xH Electrodes in Lithium-Ion Batteries
Original language description
The adjustable structures and remarkable physicochemical properties of 2D monoelemental materials, such as silicene and germanene, have attracted significant attention in recent years. They can be transformed into silicane (SiH) and germanane (GeH) through covalent functionalization via hydrogen atom termination. However, synthesizing these materials with a scalable and low-cost fabrication process to achieve high-quality 2D SiH and GeH poses challenges. Herein, groundbreaking 2D SiH and GeH materials with varying compositions, specifically Si0.25Ge0.75H, Si0.50Ge0.50H, and Si0.75Ge0.25H, are prepared through a simple and efficient chemical exfoliation of their Zintl phases. These 2D materials offer significant advantages, including their large surface area, high mechanical flexibility, rapid electron mobility, and defect-rich loose-layered structures. Among these compositions, the Si0.50Ge0.50H electrode demonstrates the highest discharge capacity, reaching up to 1059 mAh g(-1) after 60 cycles at a current density of 75 mA g(-1). A comprehensive ex-situ electrochemical analysis is conducted to investigate the reaction mechanisms of lithiation/delithiation in Si0.50Ge0.50H. Subsequently, an initial assessment of the c-Li-15(SixGe1-x)(4) phase after lithiation and the a-Si0.50Ge0.50 phase after delithiation is presented. Hence, this study contributes crucial insights into the (de)lithiation reaction mechanisms within germanane-silicane alloys. Such understanding is pivotal for mastering promising materials that amalgamate the finest properties of silicon and germanium.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/LL2101" target="_blank" >LL2101: Next Generation of 2D Monoelemental Materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Science
ISSN
2198-3844
e-ISSN
2198-3844
Volume of the periodical
11
Issue of the periodical within the volume
24
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
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UT code for WoS article
001206792000001
EID of the result in the Scopus database
2-s2.0-85190781528