Investigation of the Prussian Blue Analog Co3 [Co(CN)6 ]2 as an Anode Material for Nonaqueous Potassium-Ion Batteries
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 31 vom: 01. Aug., Seite e1802510 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2018
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article Co3[Co(CN)6]2 Prussian blue analog anode material potassium-ion batteries reaction mechanisms |
| Zusammenfassung: | © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Nonaqueous potassium-ion batteries (KIBs) are attracting increasing attention as a potential low-cost energy-storage system due to the abundance of potassium resources. Here, cobalt hexacyanocobaltate (Co3 [Co(CN)6 ]2 ), a typical Prussian blue analog (PBA), is reported as an anode material for nonaqueous KIBs. The as-prepared Co3 [Co(CN)6 ]2 exhibits a highly reversible capacity of 324.5 mAh g-1 at a current density of 0.1 A g-1 , a superior rate capability (221 mAh g-1 at 1 A g-1 ), and a favorable long-term cycling stability (200 cycles with 82% capacity retention). Based on a series of characterizations, it is found that potassiation/depotassiation in Co3 [Co(CN)6 ]2 proceeds via solid-state diffusion-limited K-ion insertion/extraction process, in which both carbon- and nitrogen-coordinated cobalt are electrochemically active toward K-ion storage. Finally, the reaction pathway between potassium and Co3 [Co(CN)6 ]2 is proposed. The present study provides new insights on further exploration of PBAs as high-performance electrode materials for KIBs |
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| Beschreibung: | Date Completed 21.08.2018 Date Revised 30.09.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.201802510 |