Topological Insulator Bi2Te3 Anode for Aqueous Aluminum-Ion Batteries: Unveiling the Role of Hydronium Ions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73631921" target="_blank" >RIV/61989592:15640/25:73631921 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27240/25:10257966 RIV/61989100:27740/25:10257966
Result on the web
<a href="https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202507255" target="_blank" >https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202507255</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/advs.202507255" target="_blank" >10.1002/advs.202507255</a>
Alternative languages
Result language
angličtina
Original language name
Topological Insulator Bi2Te3 Anode for Aqueous Aluminum-Ion Batteries: Unveiling the Role of Hydronium Ions
Original language description
The primary scientific challenge in advancing aqueous aluminum-ion batteries (AAIBs) is achieving reversible plating/stripping of the Al metal anode, limited by its low deposition potential (-1.667 V vs SHE) and surface passivation in the aqueous electrolyte. To address this issue, polypyrrole (PPy) decorated topological quantum insulator (Bi2Te3@PPy) is introduced as a novel anode in AAIBs. Benefiting from the interconnected PPy network and the gap-free metallic surface state of Bi2Te3, the Bi2Te3@PPy anode enables a remarkable discharge capacity of 438 mAh g-1 at a current rate of 0.5 A g-1. It also maintains a strong discharging plateau even at a higher current rate of 10 A g-1, outperforming most electrode materials reported so far for AAIBs. The role of the topological surface states of Bi2Te3 in enhancing the ion migration rate is validated by comparing its performance across various morphologies. Ex situ studies and computational analysis reveal that in aqueous systems, Al3+ is not the sole species responsible for charge storage. Instead, hydronium ions (H3O+) significantly contribute to storing the charges through intercalation into the crystal lattice. Overall, this study pioneers a new approach for developing advanced Al metal-free AAIBs and provides deeper insights into the charge storage mechanisms in aqueous electrolytes.
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/EH22_008%2F0004587" target="_blank" >EH22_008/0004587: Technology Beyond Nanoscale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
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
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Volume of the periodical
12
Issue of the periodical within the volume
37
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
nestránkováno
UT code for WoS article
001522862200001
EID of the result in the Scopus database
2-s2.0-105009851077