Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion Batteries
Abstract Sodium‐ion batteries are commonly regarded as a promising candidate in large‐scale energy storage. Layered iron/manganese oxide cathodes receive extensive attentions due to the element abundance and large theoretical capacity. However, these materials usually undergo obvious degradation of...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202105280 |
| _version_ | 1828318286475952128 |
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| author | Xiang Li Jialiang Xu Haoyu Li Hong Zhu Shaohua Guo Haoshen Zhou |
| author_facet | Xiang Li Jialiang Xu Haoyu Li Hong Zhu Shaohua Guo Haoshen Zhou |
| author_sort | Xiang Li |
| collection | DOAJ |
| description | Abstract Sodium‐ion batteries are commonly regarded as a promising candidate in large‐scale energy storage. Layered iron/manganese oxide cathodes receive extensive attentions due to the element abundance and large theoretical capacity. However, these materials usually undergo obvious degradation of electrochemical performance due to the tendency of Mn dissolution and Fe migration during continuous sodium release and uptake. Herein, a strategy of anion–cation synergetic redox is proposed to suppress the structural deterioration originated from overusing the electrochemical activity of transition‐metal ions, and decreased lattice strain as well as superior electrochemical performance are realized simultaneously. Results show that the Na0.8Li0.2Fe0.2Mn0.6O2 (NLFM) electrode is highly resistant to the erosion of moisture that is distinct from the traditional Mn/Fe‐based electrodes. Moreover, the NLFM electrode demonstrates solid solution behavior without phase transition during cycles. The ultra‐small volume change of 0.85% is ascribed to the negligible manganese dissolution and invisible transition‐metal migration. The high‐stable layered structure assures superior reversible capacity of ≈165 mA h g–1, excellent rate capability, and splendid capacity retention of over 98.3% with 100 cycles. The findings deepen the understanding of the synergy between anion and cation redox and provide new insights to design the high‐stable layered cathode for sodium‐ion batteries. |
| first_indexed | 2024-04-13T17:39:55Z |
| format | Article |
| id | doaj.art-9e8eb607bdd34fb6ba31894bae6e7068 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-13T17:39:55Z |
| publishDate | 2022-05-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj.art-9e8eb607bdd34fb6ba31894bae6e70682022-12-22T02:37:13ZengWileyAdvanced Science2198-38442022-05-01916n/an/a10.1002/advs.202105280Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion BatteriesXiang Li0Jialiang Xu1Haoyu Li2Hong Zhu3Shaohua Guo4Haoshen Zhou5Center of Energy Storage Materials & Technology College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructure Nanjing University Nanjing 210093 ChinaUniversity of Michigan‐Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University Shanghai 200240 ChinaCenter of Energy Storage Materials & Technology College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructure Nanjing University Nanjing 210093 ChinaUniversity of Michigan‐Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong University Shanghai 200240 ChinaCenter of Energy Storage Materials & Technology College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructure Nanjing University Nanjing 210093 ChinaCenter of Energy Storage Materials & Technology College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructure Nanjing University Nanjing 210093 ChinaAbstract Sodium‐ion batteries are commonly regarded as a promising candidate in large‐scale energy storage. Layered iron/manganese oxide cathodes receive extensive attentions due to the element abundance and large theoretical capacity. However, these materials usually undergo obvious degradation of electrochemical performance due to the tendency of Mn dissolution and Fe migration during continuous sodium release and uptake. Herein, a strategy of anion–cation synergetic redox is proposed to suppress the structural deterioration originated from overusing the electrochemical activity of transition‐metal ions, and decreased lattice strain as well as superior electrochemical performance are realized simultaneously. Results show that the Na0.8Li0.2Fe0.2Mn0.6O2 (NLFM) electrode is highly resistant to the erosion of moisture that is distinct from the traditional Mn/Fe‐based electrodes. Moreover, the NLFM electrode demonstrates solid solution behavior without phase transition during cycles. The ultra‐small volume change of 0.85% is ascribed to the negligible manganese dissolution and invisible transition‐metal migration. The high‐stable layered structure assures superior reversible capacity of ≈165 mA h g–1, excellent rate capability, and splendid capacity retention of over 98.3% with 100 cycles. The findings deepen the understanding of the synergy between anion and cation redox and provide new insights to design the high‐stable layered cathode for sodium‐ion batteries.https://doi.org/10.1002/advs.202105280anion redoxhigh‐stable layered cathodessodium‐ion batteriessuppressed phase transition |
| spellingShingle | Xiang Li Jialiang Xu Haoyu Li Hong Zhu Shaohua Guo Haoshen Zhou Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion Batteries Advanced Science anion redox high‐stable layered cathodes sodium‐ion batteries suppressed phase transition |
| title | Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion Batteries |
| title_full | Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion Batteries |
| title_fullStr | Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion Batteries |
| title_full_unstemmed | Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion Batteries |
| title_short | Synergetic Anion–Cation Redox Ensures a Highly Stable Layered Cathode for Sodium‐Ion Batteries |
| title_sort | synergetic anion cation redox ensures a highly stable layered cathode for sodium ion batteries |
| topic | anion redox high‐stable layered cathodes sodium‐ion batteries suppressed phase transition |
| url | https://doi.org/10.1002/advs.202105280 |
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