Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performance
This investigation focuses on preparing glass and glass-ceramic Na4+x[Sn1-xYxSi3.8 P0.2O12; labeled as GC-NSYx] electrolytes with different molar percentages (x = 0, 0.2, 0.5, 0.7, and 1.0 mol%). The preparation done using melt quenching and subsequent heat treatments designed to enhance conductivit...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
|
| Series: | Chemical Physics Impact |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667022424003268 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850221898272604160 |
|---|---|
| author | K C Acharyulu Srinivasula Vamsi Krishna Katta S. Bharadwaj BalajiRao Ravuri |
| author_facet | K C Acharyulu Srinivasula Vamsi Krishna Katta S. Bharadwaj BalajiRao Ravuri |
| author_sort | K C Acharyulu Srinivasula |
| collection | DOAJ |
| description | This investigation focuses on preparing glass and glass-ceramic Na4+x[Sn1-xYxSi3.8 P0.2O12; labeled as GC-NSYx] electrolytes with different molar percentages (x = 0, 0.2, 0.5, 0.7, and 1.0 mol%). The preparation done using melt quenching and subsequent heat treatments designed to enhance conductivity. The Rhombohedral Na5YSi4O12 (ICSD-20271) phase, within the space group R3̅c, emerged as the most stable and effective ion-conducting phase. In particular, the best ion conducting G-NSY1.0 glass electrolyte (σb = 2.88 × 10–5 S/cm) composition,further improved after heat treating it for 9 hours at its crystallization temperature (Tc) (GC-NSY1.0-9h; ΔT = 156 °C; σb = 4.89 × 10–4 S/cm) with superior thermal stability. Interestingly, the similarity between Eaτ and Eaσvalues indicates that both conductivity and relaxation mechanisms involve only ionic hopping. A full cell configuration using a NaMnO2: GC-NSY1.0-9h electrolyte with a Na–Sn alloy anode in a 7:3 ratio (GC-NSY1.0-9h electrolyte/anode) exhibited the lowest interfacial resistance of 145 ohms and achieved a specific capacity of 97 mAhg–1at 0.1C rate. This full cell also displayed excellent stability, irreversible capacity, and Coulombic efficiency (96 %) over 500 cycles which can be attributed to underlying oxidation and reduction reactions occurring during longer term cycling. |
| format | Article |
| id | doaj-art-6706995b6aae46f0bc369ddf35948782 |
| institution | OA Journals |
| issn | 2667-0224 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Physics Impact |
| spelling | doaj-art-6706995b6aae46f0bc369ddf359487822025-08-20T02:06:32ZengElsevierChemical Physics Impact2667-02242025-06-011010078210.1016/j.chphi.2024.100782Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performanceK C Acharyulu Srinivasula0Vamsi Krishna Katta1S. Bharadwaj2BalajiRao Ravuri3Department of Physics, School of Science, GITAM Deemed to be University, Hyderabad 502329, IndiaDepartment of Physics, School of Science, GITAM Deemed to be University, Hyderabad 502329, IndiaDepartment of Physics, School of Science, GITAM Deemed to be University, Hyderabad 502329, IndiaDepartment of Physics and Astronomical Scienes, Central University of Jammu, Rahya-Suchani, Samba, 181143, Jammu & Kashmir, India; Corresponding author.This investigation focuses on preparing glass and glass-ceramic Na4+x[Sn1-xYxSi3.8 P0.2O12; labeled as GC-NSYx] electrolytes with different molar percentages (x = 0, 0.2, 0.5, 0.7, and 1.0 mol%). The preparation done using melt quenching and subsequent heat treatments designed to enhance conductivity. The Rhombohedral Na5YSi4O12 (ICSD-20271) phase, within the space group R3̅c, emerged as the most stable and effective ion-conducting phase. In particular, the best ion conducting G-NSY1.0 glass electrolyte (σb = 2.88 × 10–5 S/cm) composition,further improved after heat treating it for 9 hours at its crystallization temperature (Tc) (GC-NSY1.0-9h; ΔT = 156 °C; σb = 4.89 × 10–4 S/cm) with superior thermal stability. Interestingly, the similarity between Eaτ and Eaσvalues indicates that both conductivity and relaxation mechanisms involve only ionic hopping. A full cell configuration using a NaMnO2: GC-NSY1.0-9h electrolyte with a Na–Sn alloy anode in a 7:3 ratio (GC-NSY1.0-9h electrolyte/anode) exhibited the lowest interfacial resistance of 145 ohms and achieved a specific capacity of 97 mAhg–1at 0.1C rate. This full cell also displayed excellent stability, irreversible capacity, and Coulombic efficiency (96 %) over 500 cycles which can be attributed to underlying oxidation and reduction reactions occurring during longer term cycling.http://www.sciencedirect.com/science/article/pii/S2667022424003268GlassGlass ceramicElectrolyteConductivityCoulombic efficiency |
| spellingShingle | K C Acharyulu Srinivasula Vamsi Krishna Katta S. Bharadwaj BalajiRao Ravuri Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performance Chemical Physics Impact Glass Glass ceramic Electrolyte Conductivity Coulombic efficiency |
| title | Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performance |
| title_full | Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performance |
| title_fullStr | Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performance |
| title_full_unstemmed | Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performance |
| title_short | Na4+x[Sn1-xYxSi3.8P0.2O12]glass-ceramic electrolyte: Structure correlation with Interfacial resistance and electrochemical performance |
| title_sort | na4 x sn1 xyxsi3 8p0 2o12 glass ceramic electrolyte structure correlation with interfacial resistance and electrochemical performance |
| topic | Glass Glass ceramic Electrolyte Conductivity Coulombic efficiency |
| url | http://www.sciencedirect.com/science/article/pii/S2667022424003268 |
| work_keys_str_mv | AT kcacharyulusrinivasula na4xsn1xyxsi38p02o12glassceramicelectrolytestructurecorrelationwithinterfacialresistanceandelectrochemicalperformance AT vamsikrishnakatta na4xsn1xyxsi38p02o12glassceramicelectrolytestructurecorrelationwithinterfacialresistanceandelectrochemicalperformance AT sbharadwaj na4xsn1xyxsi38p02o12glassceramicelectrolytestructurecorrelationwithinterfacialresistanceandelectrochemicalperformance AT balajiraoravuri na4xsn1xyxsi38p02o12glassceramicelectrolytestructurecorrelationwithinterfacialresistanceandelectrochemicalperformance |