Low-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromate
Prussian blue analogues (PBAs) have recently shown outstanding electrochemical properties ascribable to their unique open-framework crystal structure that allows the reversible insertion of alkali ions with negligible perturbation to the framework itself. Many hexacyanoferrate materials have shown e...
| Päätekijät: | , , , , |
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| Aineistotyyppi: | Journal article |
| Kieli: | English |
| Julkaistu: |
ACS Publications
2019
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| _version_ | 1826297035924439040 |
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| author | Wheeler, S Capone, I Day, S Tang, C Pasta, M |
| author_facet | Wheeler, S Capone, I Day, S Tang, C Pasta, M |
| author_sort | Wheeler, S |
| collection | OXFORD |
| description | Prussian blue analogues (PBAs) have recently shown outstanding electrochemical properties ascribable to their unique open-framework crystal structure that allows the reversible insertion of alkali ions with negligible perturbation to the framework itself. Many hexacyanoferrate materials have shown excellent properties and are some of the most promising sodium- and potassium-ion cathode materials in both aqueous and organic electrolytes. However, there is a distinct lack of candidate PBA materials that operate at low potentials, as their characteristic crystalline framework shows instability. In this article, we characterize the structure and electrochemical behavior of manganese hexacyanochromate, which exhibits reversible sodium insertion at −0.86 V vs standard hydrogen electrode (1.84 V vs Na+/Na) while maintaining the characteristic PBA cubic structure. This is the lowest redox potential of reported PBA materials and shows fast kinetics in a high-voltage water-in-salt electrolyte. Further reduction in potential in an organic electrolyte shows decomposition of the crystalline structure. |
| first_indexed | 2024-03-07T04:25:29Z |
| format | Journal article |
| id | oxford-uuid:cc7617f8-7e3e-4ea6-9fac-fd983d77406c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:25:29Z |
| publishDate | 2019 |
| publisher | ACS Publications |
| record_format | dspace |
| spelling | oxford-uuid:cc7617f8-7e3e-4ea6-9fac-fd983d77406c2022-03-27T07:22:10ZLow-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromateJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cc7617f8-7e3e-4ea6-9fac-fd983d77406cEnglishSymplectic Elements at OxfordACS Publications2019Wheeler, SCapone, IDay, STang, CPasta, MPrussian blue analogues (PBAs) have recently shown outstanding electrochemical properties ascribable to their unique open-framework crystal structure that allows the reversible insertion of alkali ions with negligible perturbation to the framework itself. Many hexacyanoferrate materials have shown excellent properties and are some of the most promising sodium- and potassium-ion cathode materials in both aqueous and organic electrolytes. However, there is a distinct lack of candidate PBA materials that operate at low potentials, as their characteristic crystalline framework shows instability. In this article, we characterize the structure and electrochemical behavior of manganese hexacyanochromate, which exhibits reversible sodium insertion at −0.86 V vs standard hydrogen electrode (1.84 V vs Na+/Na) while maintaining the characteristic PBA cubic structure. This is the lowest redox potential of reported PBA materials and shows fast kinetics in a high-voltage water-in-salt electrolyte. Further reduction in potential in an organic electrolyte shows decomposition of the crystalline structure. |
| spellingShingle | Wheeler, S Capone, I Day, S Tang, C Pasta, M Low-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromate |
| title | Low-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromate |
| title_full | Low-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromate |
| title_fullStr | Low-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromate |
| title_full_unstemmed | Low-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromate |
| title_short | Low-potential Prussian Blue analogues for sodium-ion batteries: manganese hexacyanochromate |
| title_sort | low potential prussian blue analogues for sodium ion batteries manganese hexacyanochromate |
| work_keys_str_mv | AT wheelers lowpotentialprussianblueanaloguesforsodiumionbatteriesmanganesehexacyanochromate AT caponei lowpotentialprussianblueanaloguesforsodiumionbatteriesmanganesehexacyanochromate AT days lowpotentialprussianblueanaloguesforsodiumionbatteriesmanganesehexacyanochromate AT tangc lowpotentialprussianblueanaloguesforsodiumionbatteriesmanganesehexacyanochromate AT pastam lowpotentialprussianblueanaloguesforsodiumionbatteriesmanganesehexacyanochromate |