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- Publisher Website: 10.1002/smtd.202100491
- Scopus: eid_2-s2.0-85111697519
- PMID: 34928058
- WOS: WOS:000679845000001
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Article: High‐Performance MnO2/Al battery with in-situ electrochemically reformed AlxMnO2 nanosphere cathode
Title | High‐Performance MnO2/Al battery with in-situ electrochemically reformed AlxMnO2 nanosphere cathode |
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Authors | |
Keywords | AAIB aqueous Al–ion batteries Mn 2AlO 4 phase MnO 2/Al batteries “water-in-salt” electrolytes |
Issue Date | 2021 |
Publisher | Wiley-VCH GmbH. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2366-9608 |
Citation | Small Methods, 2021, v. 5 n. 9, article no. 2100491 How to Cite? |
Abstract | Aqueous Al–ion battery (AAIB) is regarded as a promising candidate for large-scale energy storage systems due to its high capacity, high safety, and low cost, with MnO2 proved to be a high-performance cathode. However, the potential commercial application of this type of battery is plagued by the frequent structural collapse of MnO2. Herein, an in situ, electrochemically reformed, urchin-like AlxMnO2 cathode is developed for water-in-salt electrolyte-based AAIBs. Benefiting from its unique α-MnO2 coated Mn2AlO4 structure, a high Al ion storage capacity is achieved together with a high discharge voltage plateau of 1.9 V by reversible MnO2 electrolysis. Consequently, the battery exhibits a high specific capacity of 285 mAh g–1 and a high energy density of 370 Wh kg–1 at a high current density of 500 mA g–1. Improved stability with record capacity retention is also obtained at an ultrahigh current density of 5 A g–1 after 500 cycles. Such a high-capacity and high-stability AlxMnO2 cathode would pave the way for in situ electrochemical transformation of cathode design and thus boost the practical application of AAIBs. |
Persistent Identifier | http://hdl.handle.net/10722/314805 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Pan, W | - |
dc.contributor.author | MAO, J | - |
dc.contributor.author | Wang, Y | - |
dc.contributor.author | ZHAO, X | - |
dc.contributor.author | LEONG, KW | - |
dc.contributor.author | LUO, S | - |
dc.contributor.author | Chen, Y | - |
dc.contributor.author | Leung, YCD | - |
dc.date.accessioned | 2022-08-05T09:34:54Z | - |
dc.date.available | 2022-08-05T09:34:54Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Small Methods, 2021, v. 5 n. 9, article no. 2100491 | - |
dc.identifier.uri | http://hdl.handle.net/10722/314805 | - |
dc.description.abstract | Aqueous Al–ion battery (AAIB) is regarded as a promising candidate for large-scale energy storage systems due to its high capacity, high safety, and low cost, with MnO2 proved to be a high-performance cathode. However, the potential commercial application of this type of battery is plagued by the frequent structural collapse of MnO2. Herein, an in situ, electrochemically reformed, urchin-like AlxMnO2 cathode is developed for water-in-salt electrolyte-based AAIBs. Benefiting from its unique α-MnO2 coated Mn2AlO4 structure, a high Al ion storage capacity is achieved together with a high discharge voltage plateau of 1.9 V by reversible MnO2 electrolysis. Consequently, the battery exhibits a high specific capacity of 285 mAh g–1 and a high energy density of 370 Wh kg–1 at a high current density of 500 mA g–1. Improved stability with record capacity retention is also obtained at an ultrahigh current density of 5 A g–1 after 500 cycles. Such a high-capacity and high-stability AlxMnO2 cathode would pave the way for in situ electrochemical transformation of cathode design and thus boost the practical application of AAIBs. | - |
dc.language | eng | - |
dc.publisher | Wiley-VCH GmbH. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2366-9608 | - |
dc.relation.ispartof | Small Methods | - |
dc.subject | AAIB | - |
dc.subject | aqueous Al–ion batteries | - |
dc.subject | Mn 2AlO 4 phase | - |
dc.subject | MnO 2/Al batteries | - |
dc.subject | “water-in-salt” electrolytes | - |
dc.title | High‐Performance MnO2/Al battery with in-situ electrochemically reformed AlxMnO2 nanosphere cathode | - |
dc.type | Article | - |
dc.identifier.email | Pan, W: wdpan21@hku.hk | - |
dc.identifier.email | Chen, Y: yuechen@hku.hk | - |
dc.identifier.email | Leung, YCD: ycleung@hku.hk | - |
dc.identifier.authority | Chen, Y=rp01925 | - |
dc.identifier.authority | Leung, YCD=rp00149 | - |
dc.identifier.doi | 10.1002/smtd.202100491 | - |
dc.identifier.pmid | 34928058 | - |
dc.identifier.scopus | eid_2-s2.0-85111697519 | - |
dc.identifier.hkuros | 335272 | - |
dc.identifier.hkuros | 334972 | - |
dc.identifier.volume | 5 | - |
dc.identifier.issue | 9 | - |
dc.identifier.spage | article no. 2100491 | - |
dc.identifier.epage | article no. 2100491 | - |
dc.identifier.isi | WOS:000679845000001 | - |
dc.publisher.place | Germany | - |