High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance
Abstract Vanadium nitride (VN) electrode displays high‐rate, pseudocapacitive responses in aqueous electrolytes, however, it remains largely unclear in nonaqueous, Na+‐based electrolytes. The traditional view supposes a conversion‐type mechanism for Na+ storage in VN anodes but does not explain the...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-05-01
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| Series: | Interdisciplinary Materials |
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| Online Access: | https://doi.org/10.1002/idm2.12080 |
| _version_ | 1797816643465773056 |
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| author | Qiulong Wei Tingyi Huang Xiaojuan Huang Binhao Wang Yalong Jiang Dafu Tang Dong‐Liang Peng Bruce Dunn Liqiang Mai |
| author_facet | Qiulong Wei Tingyi Huang Xiaojuan Huang Binhao Wang Yalong Jiang Dafu Tang Dong‐Liang Peng Bruce Dunn Liqiang Mai |
| author_sort | Qiulong Wei |
| collection | DOAJ |
| description | Abstract Vanadium nitride (VN) electrode displays high‐rate, pseudocapacitive responses in aqueous electrolytes, however, it remains largely unclear in nonaqueous, Na+‐based electrolytes. The traditional view supposes a conversion‐type mechanism for Na+ storage in VN anodes but does not explain the phenomena of their size‐dependent specific capacities and underlying causes of pseudocapacitive charge storage behaviors. Herein, we insightfully reveal the VN anode exhibits a surface‐redox pseudocapacitive mechanism in nonaqueous, Na+‐based electrolytes, as demonstrated by kinetics analysis, experimental observations, and first‐principles calculations. Through ex situ X‐ray photoelectron spectroscopy and semiquantitative analyses, the Na+ storage is characterized by redox reactions occurring with the V5+/V4+ to V3+ at the surface of VN particles, which is different from the well‐known conversion reaction mechanism. The pseudocapacitive performance is enhanced through nanoarchitecture design via oxidized vanadium states at the surface. The optimized VN‐10 nm anode delivers a sodium‐ion storage capability of 106 mAh g−1 at the high specific current of 20 A g−1, and excellent cycling performance of 5000 cycles with negligible capacity losses. This work demonstrates the emerging opportunities of utilizing pseudocapacitive charge storage for realizing high‐rate sodium‐ion storage applications. |
| first_indexed | 2024-03-13T08:40:44Z |
| format | Article |
| id | doaj.art-13f6c1df67dc4e79bdd77a2bf8be4d4e |
| institution | Directory Open Access Journal |
| issn | 2767-441X |
| language | English |
| last_indexed | 2024-03-13T08:40:44Z |
| publishDate | 2023-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Interdisciplinary Materials |
| spelling | doaj.art-13f6c1df67dc4e79bdd77a2bf8be4d4e2023-05-30T10:26:18ZengWileyInterdisciplinary Materials2767-441X2023-05-012343444210.1002/idm2.12080High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitanceQiulong Wei0Tingyi Huang1Xiaojuan Huang2Binhao Wang3Yalong Jiang4Dafu Tang5Dong‐Liang Peng6Bruce Dunn7Liqiang Mai8Department of Materials Science and Engineering Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials Xiamen University Xiamen ChinaDepartment of Materials Science and Engineering Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials Xiamen University Xiamen ChinaDepartment of Materials Science and Engineering Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials Xiamen University Xiamen ChinaDepartment of Materials Science and Engineering Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials Xiamen University Xiamen ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan ChinaDepartment of Materials Science and Engineering Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials Xiamen University Xiamen ChinaDepartment of Materials Science and Engineering Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials Xiamen University Xiamen ChinaDepartment of Materials Science and Engineering University of California Los Angeles Los Angeles California USAState Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan ChinaAbstract Vanadium nitride (VN) electrode displays high‐rate, pseudocapacitive responses in aqueous electrolytes, however, it remains largely unclear in nonaqueous, Na+‐based electrolytes. The traditional view supposes a conversion‐type mechanism for Na+ storage in VN anodes but does not explain the phenomena of their size‐dependent specific capacities and underlying causes of pseudocapacitive charge storage behaviors. Herein, we insightfully reveal the VN anode exhibits a surface‐redox pseudocapacitive mechanism in nonaqueous, Na+‐based electrolytes, as demonstrated by kinetics analysis, experimental observations, and first‐principles calculations. Through ex situ X‐ray photoelectron spectroscopy and semiquantitative analyses, the Na+ storage is characterized by redox reactions occurring with the V5+/V4+ to V3+ at the surface of VN particles, which is different from the well‐known conversion reaction mechanism. The pseudocapacitive performance is enhanced through nanoarchitecture design via oxidized vanadium states at the surface. The optimized VN‐10 nm anode delivers a sodium‐ion storage capability of 106 mAh g−1 at the high specific current of 20 A g−1, and excellent cycling performance of 5000 cycles with negligible capacity losses. This work demonstrates the emerging opportunities of utilizing pseudocapacitive charge storage for realizing high‐rate sodium‐ion storage applications.https://doi.org/10.1002/idm2.12080high‐rate capabilitypseudocapacitancesodium‐ion storagevanadium nitride |
| spellingShingle | Qiulong Wei Tingyi Huang Xiaojuan Huang Binhao Wang Yalong Jiang Dafu Tang Dong‐Liang Peng Bruce Dunn Liqiang Mai High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance Interdisciplinary Materials high‐rate capability pseudocapacitance sodium‐ion storage vanadium nitride |
| title | High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance |
| title_full | High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance |
| title_fullStr | High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance |
| title_full_unstemmed | High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance |
| title_short | High‐rate sodium‐ion storage of vanadium nitride via surface‐redox pseudocapacitance |
| title_sort | high rate sodium ion storage of vanadium nitride via surface redox pseudocapacitance |
| topic | high‐rate capability pseudocapacitance sodium‐ion storage vanadium nitride |
| url | https://doi.org/10.1002/idm2.12080 |
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