General metal-organic framework-derived strategy to synthesize yolk-shell carbon-encapsulated nickelic spheres for sodium-ion batteries
Copyright © 2022 Elsevier Inc. All rights reserved..
Transition-metal compounds have attracted enormous attention as potential energy storage materials for their high theoretical capacity and energy density. However, the most present transition-metal compounds still suffer from severe capacity decay and limited rate capability due to the lack of robust architectures. Herein, a general metal-organic framework-derived route is reported to fabricate hierarchical carbon-encapsulated yolk-shell nickelic spheres as anode materials for sodium-ion batteries. The nickelic metal-organic framework (Ni-MOF) precursors can be in situ converted into hierarchical carbon-encapsulated Ni2P (Ni2P/C), NiS2 (NiS2/C) and NiSe2 (NiSe2/C) by phosphorization, sulfuration, and selenation reaction, respectively, and maintain their yolk-shell sphere-like morphology. The as-synthesized Ni2P/C sample can deliver much lower polarization and discharge platform, smaller voltage gap, and faster kinetics in comparison with that of the other two counterparts, and thus achieve higher initial specific capacity (3222.1/1979.3 mAh g-1) and reversible capacity of 765.4 mAh g-1 after 110 cycles. This work should provide new insights into the phase and structure engineering of carbon-encapsulated transition-metal compound electrodes via MOFs template for advanced battery systems.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:613 |
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| Enthalten in: |
Journal of colloid and interface science - 613(2022) vom: 05. Mai, Seite 23-34 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Liqin [VerfasserIn] |
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| Links: |
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| Themen: |
Anode |
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| Anmerkungen: |
Date Revised 14.02.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jcis.2021.12.157 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM335675751 |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2022 Elsevier Inc. All rights reserved. | ||
| 520 | |a Transition-metal compounds have attracted enormous attention as potential energy storage materials for their high theoretical capacity and energy density. However, the most present transition-metal compounds still suffer from severe capacity decay and limited rate capability due to the lack of robust architectures. Herein, a general metal-organic framework-derived route is reported to fabricate hierarchical carbon-encapsulated yolk-shell nickelic spheres as anode materials for sodium-ion batteries. The nickelic metal-organic framework (Ni-MOF) precursors can be in situ converted into hierarchical carbon-encapsulated Ni2P (Ni2P/C), NiS2 (NiS2/C) and NiSe2 (NiSe2/C) by phosphorization, sulfuration, and selenation reaction, respectively, and maintain their yolk-shell sphere-like morphology. The as-synthesized Ni2P/C sample can deliver much lower polarization and discharge platform, smaller voltage gap, and faster kinetics in comparison with that of the other two counterparts, and thus achieve higher initial specific capacity (3222.1/1979.3 mAh g-1) and reversible capacity of 765.4 mAh g-1 after 110 cycles. This work should provide new insights into the phase and structure engineering of carbon-encapsulated transition-metal compound electrodes via MOFs template for advanced battery systems | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Anode | |
| 650 | 4 | |a Metal–organic frameworks | |
| 650 | 4 | |a Phosphorization | |
| 650 | 4 | |a Sodium-ion battery | |
| 650 | 4 | |a Yolk-shell | |
| 700 | 1 | |a Liu, Bolin |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Youqi |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Min |e verfasserin |4 aut | |
| 700 | 1 | |a Du, Changliang |e verfasserin |4 aut | |
| 700 | 1 | |a Han, Zhanli |e verfasserin |4 aut | |
| 700 | 1 | |a Yao, Xiuyun |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Xilan |e verfasserin |4 aut | |
| 700 | 1 | |a Cao, Chuanbao |e verfasserin |4 aut | |
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