{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["De P"],"funding":["TECHSCALE","ERDF/ESF","Large Research Infrastructure ENREGAT","European Union under the REFRESH-Research Excellence For REgion Sustainability and High-tech Industries","Ministry of Education, Youth and Sports of the Czech Republic","Operational Programme Just Transition","Czech Nano Lab"],"pagination":["e07255"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12499396"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["12(37)"],"pubmed_abstract":["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 (Bi<sub>2</sub>Te<sub>3</sub>@PPy) is introduced as a novel anode in AAIBs. Benefiting from the interconnected PPy network and the gap-free metallic surface state of Bi<sub>2</sub>Te<sub>3</sub>, the Bi<sub>2</sub>Te<sub>3</sub>@PPy anode enables a remarkable discharge capacity of 438 mAh g<sup>-1</sup> at a current rate of 0.5 A g<sup>-1</sup>. It also maintains a strong discharging plateau even at a higher current rate of 10 A g<sup>-1</sup>, outperforming most electrode materials reported so far for AAIBs. The role of the topological surface states of Bi<sub>2</sub>Te<sub>3</sub> 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, Al<sup>3+</sup> is not the sole species responsible for charge storage. Instead, hydronium ions (H<sub>3</sub>O<sup>+</sup>) 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."],"journal":["Advanced science (Weinheim, Baden-Wurttemberg, Germany)"],"pubmed_title":["Topological Insulator Bi&lt;sub&gt;2&lt;/sub&gt;Te&lt;sub&gt;3&lt;/sub&gt; Anode for Aqueous Aluminum-Ion Batteries: Unveiling the Role of Hydronium Ions."],"pmcid":["PMC12499396"],"funding_grant_id":["CZ.02.01.01/00/22_008/0004587","CZ.10.03.01/00/22_003/0000048","LM2023056","LM2023051","ID:90254"],"pubmed_authors":["De P","Lazar P","Pumera M","Otyepka M"],"additional_accession":[]},"is_claimable":false,"name":"Topological Insulator Bi&lt;sub&gt;2&lt;/sub&gt;Te&lt;sub&gt;3&lt;/sub&gt; Anode for Aqueous Aluminum-Ion Batteries: Unveiling the Role of Hydronium Ions.","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 (Bi<sub>2</sub>Te<sub>3</sub>@PPy) is introduced as a novel anode in AAIBs. Benefiting from the interconnected PPy network and the gap-free metallic surface state of Bi<sub>2</sub>Te<sub>3</sub>, the Bi<sub>2</sub>Te<sub>3</sub>@PPy anode enables a remarkable discharge capacity of 438 mAh g<sup>-1</sup> at a current rate of 0.5 A g<sup>-1</sup>. It also maintains a strong discharging plateau even at a higher current rate of 10 A g<sup>-1</sup>, outperforming most electrode materials reported so far for AAIBs. The role of the topological surface states of Bi<sub>2</sub>Te<sub>3</sub> 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, Al<sup>3+</sup> is not the sole species responsible for charge storage. Instead, hydronium ions (H<sub>3</sub>O<sup>+</sup>) 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.","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Oct","modification":"2026-06-05T06:31:19.432Z","creation":"2026-06-05T03:06:42.652Z"},"accession":"S-EPMC12499396","cross_references":{"pubmed":["40619600"],"doi":["10.1002/advs.202507255"]}}