Promoting OH- Adsorption and Diffusion Enables Ultrahigh Capacity and Rate Capability of Nickel Sulfide Cathode for Aqueous Alkaline Zn-Based Batteries
© 2023 Wiley-VCH GmbH..
Aqueous alkaline Zn-based batteries (AAZBs) possess great promise for large-scale applications thanks to their higher discharging plateau and unique reaction mechanism. However, the capacity and rate capability of Ni-based cathodes are still unsatisfactory due to their insufficient OH- adsorption and diffusion ability. Herein, heterostructured Ni3 S2 /Ni(OH)2 nanosheets with outstanding electrochemical performance are synthesized via a facile chemical etching strategy. The heterostructured Ni3 S2 /Ni(OH)2 nanosheet cathode shows significantly increased capacity and rate capability due to its boosted OH- adsorption and diffusion ability compared to Ni3 S2 . Consequently, the assembled Zn//Ni3 S2 /Ni(OH)2 cell can deliver an ultrahigh capacity of 2.26 mAh cm-2 , an excellent rate performance (0.91 mAh cm-2 at 100 mA cm-2 ) and a satisfying cycling stability (1.01 mAh cm-2 at 20 mA cm-2 after 500 cycles). Moreover, a prominent energy density of 3.86 mWh cm-2 is obtained, which exceeds the majority of recently reported AAZBs. This work is expected to provide a new modification direction for developing high-performance nickel sulfide cathode for AAZBs.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:20 |
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| Enthalten in: |
Small (Weinheim an der Bergstrasse, Germany) - 20(2024), 7 vom: 18. Feb., Seite e2306258 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
He, Jinjun [VerfasserIn] |
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| Links: |
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| Themen: |
Alkaline zinc batteries |
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| Anmerkungen: |
Date Revised 15.02.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/smll.202306258 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM363003495 |
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| 520 | |a © 2023 Wiley-VCH GmbH. | ||
| 520 | |a Aqueous alkaline Zn-based batteries (AAZBs) possess great promise for large-scale applications thanks to their higher discharging plateau and unique reaction mechanism. However, the capacity and rate capability of Ni-based cathodes are still unsatisfactory due to their insufficient OH- adsorption and diffusion ability. Herein, heterostructured Ni3 S2 /Ni(OH)2 nanosheets with outstanding electrochemical performance are synthesized via a facile chemical etching strategy. The heterostructured Ni3 S2 /Ni(OH)2 nanosheet cathode shows significantly increased capacity and rate capability due to its boosted OH- adsorption and diffusion ability compared to Ni3 S2 . Consequently, the assembled Zn//Ni3 S2 /Ni(OH)2 cell can deliver an ultrahigh capacity of 2.26 mAh cm-2 , an excellent rate performance (0.91 mAh cm-2 at 100 mA cm-2 ) and a satisfying cycling stability (1.01 mAh cm-2 at 20 mA cm-2 after 500 cycles). Moreover, a prominent energy density of 3.86 mWh cm-2 is obtained, which exceeds the majority of recently reported AAZBs. This work is expected to provide a new modification direction for developing high-performance nickel sulfide cathode for AAZBs | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a heterostructures | |
| 650 | 4 | |a hydroxyl adsorption and diffusion | |
| 650 | 4 | |a nickel sulfide cathodes | |
| 650 | 4 | |a ultrahigh capacity | |
| 700 | 1 | |a Shi, Xin |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Qiyu |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Haibo |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Yanxia |e verfasserin |4 aut | |
| 700 | 1 | |a Lu, Xihong |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Zujin |e verfasserin |4 aut | |
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