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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202105234
|2 doi
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|a pubmed24n1105.xml
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|a (NLM)34623704
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|a DE-627
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| 041 |
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|a eng
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| 100 |
1 |
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|a Xu, Yunkai
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Fe-Ion Bolted VOPO4 ∙2H2 O as an Aqueous Fe-Ion Battery Electrode
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 20.05.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a Iron ion batteries using Fe2+ as a charge carrier have yet to be widely explored, and they lack high-performing Fe2+ hosting cathode materials to couple with the iron metal anode. Here, it is demonstrated that VOPO4 ∙2H2 O can reversibly host Fe2+ with a high specific capacity of 100 mAh g-1 and stable cycling performance, where 68% of the initial capacity is retained over 800 cycles. In sharp contrast, VOPO4 ∙2H2 O's capacity of hosting Zn2+ fades precipitously over tens of cycles. VOPO4 ∙2H2 O stores Fe2+ with a unique mechanism, where upon contacting the electrolyte by the VOPO4 ∙2H2 O electrode, Fe2+ ions from the electrolyte get oxidized to Fe3+ ions that are inserted and trapped in the VOPO4 ∙2H2 O structure in an electroless redox reaction. The trapped Fe3+ ions, thus, bolt the layered structure of VOPO4 ∙2H2 O, which prevents it from dissolution into the electrolyte during (de)insertion of Fe2+ . The findings offer a new strategy to use a redox-active ion charge carrier to stabilize the layered electrode materials
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|a Journal Article
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|a aqueous electrolytes
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| 650 |
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4 |
|a ion bolting
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| 650 |
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|a iron metal batteries
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| 650 |
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4 |
|a vanadium oxyphosphate
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| 700 |
1 |
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|a Wu, Xianyong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sandstrom, Sean K
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hong, Jessica J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jiang, Heng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Xin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ji, Xiulei
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 49 vom: 01. Dez., Seite e2105234
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:33
|g year:2021
|g number:49
|g day:01
|g month:12
|g pages:e2105234
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| 856 |
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|u http://dx.doi.org/10.1002/adma.202105234
|3 Volltext
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