Decoupling Degradation at the Electrode Interfaces in Prussian White Full Cells
Abstract Prussian blue analogues for sodium‐ion battery cathodes are growing in popularity as next‐generation energy storage devices. Prussian White (PW) with formula NaxFe[Fe(CN)6]y•nH2O is leading the trend, having already been commercialized. However, capacity fade (PW/electrolyte degradation) an...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2025-05-01
|
| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202400854 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849387466278043648 |
|---|---|
| author | Casimir Misiewicz Alexandra E. Ulander Tim Melin Aram Hall Erik J. Berg |
| author_facet | Casimir Misiewicz Alexandra E. Ulander Tim Melin Aram Hall Erik J. Berg |
| author_sort | Casimir Misiewicz |
| collection | DOAJ |
| description | Abstract Prussian blue analogues for sodium‐ion battery cathodes are growing in popularity as next‐generation energy storage devices. Prussian White (PW) with formula NaxFe[Fe(CN)6]y•nH2O is leading the trend, having already been commercialized. However, capacity fade (PW/electrolyte degradation) and safety concerns (cyanide/cyanogen release) still raise concerns. Online electrochemical mass spectrometry, supported by both operando Fourier transform infrared spectroscopy and Mössbauer spectroscopy, is herein used to analyze degradation processes in PW‐based Na‐ion full cells. Apart from the typical cell formation reactions, hydrogen is observed to evolve during cell discharge and evidenced to stem from oxidation of NaH, accumulated upon charge. Over‐oxidation of PW after full desodiation releases CN, which not only forms (CN)2 but also degrades the electrolyte. Loss of CN likely results in a nanometric (≈4 nm) surface‐reconstructed passivation layer on PW, thus inhibiting further degradation. Fundamental understanding of degradation reactions in PW full‐cells, as gathered herein, shows that the aforementioned capacity fade and safety concerns are wholly addressable and hence guides the further development of Na‐ion batteries for wider ranges of applications. |
| format | Article |
| id | doaj-art-6211646a6adb439f8dc2da831a080d12 |
| institution | Kabale University |
| issn | 2196-7350 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj-art-6211646a6adb439f8dc2da831a080d122025-08-20T03:53:51ZengWiley-VCHAdvanced Materials Interfaces2196-73502025-05-011210n/an/a10.1002/admi.202400854Decoupling Degradation at the Electrode Interfaces in Prussian White Full CellsCasimir Misiewicz0Alexandra E. Ulander1Tim Melin2Aram Hall3Erik J. Berg4Department of Chemistry Ångström Laboratory Uppsala University Box 538 Uppsala SE‐752 21 SwedenDepartment of Chemistry Ångström Laboratory Uppsala University Box 538 Uppsala SE‐752 21 SwedenDepartment of Chemistry Ångström Laboratory Uppsala University Box 538 Uppsala SE‐752 21 SwedenDepartment of Chemistry Ångström Laboratory Uppsala University Box 538 Uppsala SE‐752 21 SwedenDepartment of Chemistry Ångström Laboratory Uppsala University Box 538 Uppsala SE‐752 21 SwedenAbstract Prussian blue analogues for sodium‐ion battery cathodes are growing in popularity as next‐generation energy storage devices. Prussian White (PW) with formula NaxFe[Fe(CN)6]y•nH2O is leading the trend, having already been commercialized. However, capacity fade (PW/electrolyte degradation) and safety concerns (cyanide/cyanogen release) still raise concerns. Online electrochemical mass spectrometry, supported by both operando Fourier transform infrared spectroscopy and Mössbauer spectroscopy, is herein used to analyze degradation processes in PW‐based Na‐ion full cells. Apart from the typical cell formation reactions, hydrogen is observed to evolve during cell discharge and evidenced to stem from oxidation of NaH, accumulated upon charge. Over‐oxidation of PW after full desodiation releases CN, which not only forms (CN)2 but also degrades the electrolyte. Loss of CN likely results in a nanometric (≈4 nm) surface‐reconstructed passivation layer on PW, thus inhibiting further degradation. Fundamental understanding of degradation reactions in PW full‐cells, as gathered herein, shows that the aforementioned capacity fade and safety concerns are wholly addressable and hence guides the further development of Na‐ion batteries for wider ranges of applications.https://doi.org/10.1002/admi.202400854cyanogenonline electrochemical mass spectrometryPrussian Whitesodium‐ion batteriessolid electrolyte interphase |
| spellingShingle | Casimir Misiewicz Alexandra E. Ulander Tim Melin Aram Hall Erik J. Berg Decoupling Degradation at the Electrode Interfaces in Prussian White Full Cells Advanced Materials Interfaces cyanogen online electrochemical mass spectrometry Prussian White sodium‐ion batteries solid electrolyte interphase |
| title | Decoupling Degradation at the Electrode Interfaces in Prussian White Full Cells |
| title_full | Decoupling Degradation at the Electrode Interfaces in Prussian White Full Cells |
| title_fullStr | Decoupling Degradation at the Electrode Interfaces in Prussian White Full Cells |
| title_full_unstemmed | Decoupling Degradation at the Electrode Interfaces in Prussian White Full Cells |
| title_short | Decoupling Degradation at the Electrode Interfaces in Prussian White Full Cells |
| title_sort | decoupling degradation at the electrode interfaces in prussian white full cells |
| topic | cyanogen online electrochemical mass spectrometry Prussian White sodium‐ion batteries solid electrolyte interphase |
| url | https://doi.org/10.1002/admi.202400854 |
| work_keys_str_mv | AT casimirmisiewicz decouplingdegradationattheelectrodeinterfacesinprussianwhitefullcells AT alexandraeulander decouplingdegradationattheelectrodeinterfacesinprussianwhitefullcells AT timmelin decouplingdegradationattheelectrodeinterfacesinprussianwhitefullcells AT aramhall decouplingdegradationattheelectrodeinterfacesinprussianwhitefullcells AT erikjberg decouplingdegradationattheelectrodeinterfacesinprussianwhitefullcells |