Boosting Sodium Compensation Efficiency via a CNT/MnO2 Catalyst toward High-Performance Na-Ion Batteries
The formation of a solid electrolyte interphase on carbon anodes causes irreversible loss of Na+ ions, significantly compromising the energy density of Na-ion full cells. Sodium compensation additives can effectively address the irreversible sodium loss but suffer from high decomposition voltage induced by low electrochemical activity. Herein, we propose a universal electrocatalytic sodium compensation strategy by introducing a carbon nanotube (CNT)/MnO2 catalyst to realize full utilization of sodium compensation additives at a much-reduced decomposition voltage. The well-organized CNT/MnO2 composite with high catalytic activity, good electronic conductivity, and abundant reaction sites enables sodium compensation additives to decompose at significantly reduced voltages (from 4.40 to 3.90 V vs Na+/Na for sodium oxalate, 3.88 V for sodium carbonate, and even 3.80 V for sodium citrate). As a result, sodium oxalate as the optimal additive achieves a specific capacity of 394 mAh g-1, almost reaching its theoretical capacity in the first charge, increasing the energy density of the Na-ion full cell from 111 to 158 Wh kg-1 with improved cycle stability and rate capability. This work offers a valuable approach to enhance sodium compensation efficiency, promising high-performance energy storage devices in the future.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:16 |
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| Enthalten in: |
ACS applied materials & interfaces - 16(2024), 15 vom: 17. Apr., Seite 18971-18979 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
He, Wei-Huan [VerfasserIn] |
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| Links: |
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| Themen: |
Decomposition voltage |
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| Anmerkungen: |
Date Revised 18.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.4c02268 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM370680723 |
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| 520 | |a The formation of a solid electrolyte interphase on carbon anodes causes irreversible loss of Na+ ions, significantly compromising the energy density of Na-ion full cells. Sodium compensation additives can effectively address the irreversible sodium loss but suffer from high decomposition voltage induced by low electrochemical activity. Herein, we propose a universal electrocatalytic sodium compensation strategy by introducing a carbon nanotube (CNT)/MnO2 catalyst to realize full utilization of sodium compensation additives at a much-reduced decomposition voltage. The well-organized CNT/MnO2 composite with high catalytic activity, good electronic conductivity, and abundant reaction sites enables sodium compensation additives to decompose at significantly reduced voltages (from 4.40 to 3.90 V vs Na+/Na for sodium oxalate, 3.88 V for sodium carbonate, and even 3.80 V for sodium citrate). As a result, sodium oxalate as the optimal additive achieves a specific capacity of 394 mAh g-1, almost reaching its theoretical capacity in the first charge, increasing the energy density of the Na-ion full cell from 111 to 158 Wh kg-1 with improved cycle stability and rate capability. This work offers a valuable approach to enhance sodium compensation efficiency, promising high-performance energy storage devices in the future | ||
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| 650 | 4 | |a electrocatalytic strategy | |
| 650 | 4 | |a electrochemical properties | |
| 650 | 4 | |a sodium compensation | |
| 650 | 4 | |a sodium-ion batteries | |
| 700 | 1 | |a Guo, Yu-Jie |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, En-Hui |e verfasserin |4 aut | |
| 700 | 1 | |a Ding, Liang |e verfasserin |4 aut | |
| 700 | 1 | |a Chang, Xin |e verfasserin |4 aut | |
| 700 | 1 | |a Chang, Yu-Xin |e verfasserin |4 aut | |
| 700 | 1 | |a Lei, Zhou-Quan |e verfasserin |4 aut | |
| 700 | 1 | |a Xin, Sen |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Hui |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Bo |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Qian-Yu |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Li |e verfasserin |4 aut | |
| 700 | 1 | |a Yin, Ya-Xia |e verfasserin |4 aut | |
| 700 | 1 | |a Guo, Yu-Guo |e verfasserin |4 aut | |
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