A Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion Batteries
The solid electrolyte interphase (SEI) largely determines the electrochemical performance of negative electrodes in sodium-ion batteries (SIBs). Ether-based electrolytes, such as diglyme, have been shown to form a more stable and thinner SEI on sodium anodes than traditional commercial ester-based e...
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-07-01
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| Series: | PRX Energy |
| Online Access: | http://doi.org/10.1103/jfvb-wp5w |
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| author | Liang Zhao Sara I.R. Costa Yue Chen Jack R. Fitzpatrick Andrew J. Naylor Oleg Kolosov Nuria Tapia-Ruiz |
| author_facet | Liang Zhao Sara I.R. Costa Yue Chen Jack R. Fitzpatrick Andrew J. Naylor Oleg Kolosov Nuria Tapia-Ruiz |
| author_sort | Liang Zhao |
| collection | DOAJ |
| description | The solid electrolyte interphase (SEI) largely determines the electrochemical performance of negative electrodes in sodium-ion batteries (SIBs). Ether-based electrolytes, such as diglyme, have been shown to form a more stable and thinner SEI on sodium anodes than traditional commercial ester-based electrolytes. Nonetheless, variations in the detailed evolution of the chemical composition and mechanical strength of the SEIs formed in these two electrolytic solutions during the electrochemical process have rarely been investigated. In this work, we conduct a comparative study of the SEI formed in diglyme-based and carbonate-based electrolytes with Na_{2}Ti_{3}O_{7} (NTO) as a proof-of-concept material, using energy-tuned photoelectron spectroscopy, operando electrochemical atomic force microscopy, and electrochemical techniques. The results show that diglyme forms a thin, homogeneous, and stable SEI with a well-defined inorganic-organic bilayer structure, as opposed to ester-based electrolytes, which form a thicker, nonuniform, and dynamically changing SEI with randomly distributed inorganic-organic structure. Moreover, the less resistive and higher capacitive interfacial processes induced by the diglyme-based electrolyte decrease the overall battery impedance. These advantages enable the NTO anode to exhibit superior specific capacity, cycle stability, and rate capability. This study provides an in-depth view of the factors behind the electrolyte-dependent performance of SIB anodes, which could inform the design and pairing of electrolytes with electrode materials in rechargeable batteries. |
| format | Article |
| id | doaj-art-fd91386bbf2c46ad8a71a0a241376013 |
| institution | DOAJ |
| issn | 2768-5608 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | PRX Energy |
| spelling | doaj-art-fd91386bbf2c46ad8a71a0a2413760132025-08-20T03:13:07ZengAmerican Physical SocietyPRX Energy2768-56082025-07-014303300210.1103/jfvb-wp5wA Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion BatteriesLiang ZhaoSara I.R. CostaYue ChenJack R. FitzpatrickAndrew J. NaylorOleg KolosovNuria Tapia-RuizThe solid electrolyte interphase (SEI) largely determines the electrochemical performance of negative electrodes in sodium-ion batteries (SIBs). Ether-based electrolytes, such as diglyme, have been shown to form a more stable and thinner SEI on sodium anodes than traditional commercial ester-based electrolytes. Nonetheless, variations in the detailed evolution of the chemical composition and mechanical strength of the SEIs formed in these two electrolytic solutions during the electrochemical process have rarely been investigated. In this work, we conduct a comparative study of the SEI formed in diglyme-based and carbonate-based electrolytes with Na_{2}Ti_{3}O_{7} (NTO) as a proof-of-concept material, using energy-tuned photoelectron spectroscopy, operando electrochemical atomic force microscopy, and electrochemical techniques. The results show that diglyme forms a thin, homogeneous, and stable SEI with a well-defined inorganic-organic bilayer structure, as opposed to ester-based electrolytes, which form a thicker, nonuniform, and dynamically changing SEI with randomly distributed inorganic-organic structure. Moreover, the less resistive and higher capacitive interfacial processes induced by the diglyme-based electrolyte decrease the overall battery impedance. These advantages enable the NTO anode to exhibit superior specific capacity, cycle stability, and rate capability. This study provides an in-depth view of the factors behind the electrolyte-dependent performance of SIB anodes, which could inform the design and pairing of electrolytes with electrode materials in rechargeable batteries.http://doi.org/10.1103/jfvb-wp5w |
| spellingShingle | Liang Zhao Sara I.R. Costa Yue Chen Jack R. Fitzpatrick Andrew J. Naylor Oleg Kolosov Nuria Tapia-Ruiz A Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion Batteries PRX Energy |
| title | A Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion Batteries |
| title_full | A Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion Batteries |
| title_fullStr | A Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion Batteries |
| title_full_unstemmed | A Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion Batteries |
| title_short | A Comparative Study of Solid Electrolyte Interphase Evolution in Ether and Ester-Based Electrolytes for Na-ion Batteries |
| title_sort | comparative study of solid electrolyte interphase evolution in ether and ester based electrolytes for na ion batteries |
| url | http://doi.org/10.1103/jfvb-wp5w |
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