Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer Deposition
Sodium-ion batteries (SIBs) have attracted increasing attention for storing renewable clean energy, owing to their cost-effectiveness. Nonetheless, SIBs still remain significant challenges in terms of the availability of suitable anode materials with high capacities and good rate capabilities. Our p...
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MDPI AG
2020-12-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/4/4/184 |
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| author | Jiyu Cai Zonghai Chen Xiangbo Meng |
| author_facet | Jiyu Cai Zonghai Chen Xiangbo Meng |
| author_sort | Jiyu Cai |
| collection | DOAJ |
| description | Sodium-ion batteries (SIBs) have attracted increasing attention for storing renewable clean energy, owing to their cost-effectiveness. Nonetheless, SIBs still remain significant challenges in terms of the availability of suitable anode materials with high capacities and good rate capabilities. Our previous work has developed and verified that Cu<sub>2</sub>S wrapped by nitrogen-doped graphene (i.e., Cu<sub>2</sub>S@NG composite), as an anode in SIBs, could exhibit a superior performance with ultralong cyclability and excellent rate capability, mainly due to the multifunctional roles of NG. However, the Cu<sub>2</sub>S@NG anode still suffers from continuous parasitic reactions at low potentials, causing a rapid performance deterioration. In this study, we investigated the effects of a conformal Al<sub>2</sub>O<sub>3</sub> coating via atomic layer deposition (ALD) on the interfacial stability of the Cu<sub>2</sub>S@NG anode. As a consequence, the ALD-coated Cu<sub>2</sub>S@NG electrode can deliver a high capacity of 374 mAh g<sup>−1</sup> at a current density of 100 mA g<sup>−1</sup> and achieve a capacity retention of ~100% at different rates. This work verified that surface modification via ALD is a viable route for improving SIBs’ performances. |
| first_indexed | 2024-03-10T14:15:07Z |
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| id | doaj.art-ee226c74bc5b47c786ee5354e9230c68 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-10T14:15:07Z |
| publishDate | 2020-12-01 |
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| series | Journal of Composites Science |
| spelling | doaj.art-ee226c74bc5b47c786ee5354e9230c682023-11-20T23:53:38ZengMDPI AGJournal of Composites Science2504-477X2020-12-014418410.3390/jcs4040184Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer DepositionJiyu Cai0Zonghai Chen1Xiangbo Meng2Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701, USAChemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USADepartment of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701, USASodium-ion batteries (SIBs) have attracted increasing attention for storing renewable clean energy, owing to their cost-effectiveness. Nonetheless, SIBs still remain significant challenges in terms of the availability of suitable anode materials with high capacities and good rate capabilities. Our previous work has developed and verified that Cu<sub>2</sub>S wrapped by nitrogen-doped graphene (i.e., Cu<sub>2</sub>S@NG composite), as an anode in SIBs, could exhibit a superior performance with ultralong cyclability and excellent rate capability, mainly due to the multifunctional roles of NG. However, the Cu<sub>2</sub>S@NG anode still suffers from continuous parasitic reactions at low potentials, causing a rapid performance deterioration. In this study, we investigated the effects of a conformal Al<sub>2</sub>O<sub>3</sub> coating via atomic layer deposition (ALD) on the interfacial stability of the Cu<sub>2</sub>S@NG anode. As a consequence, the ALD-coated Cu<sub>2</sub>S@NG electrode can deliver a high capacity of 374 mAh g<sup>−1</sup> at a current density of 100 mA g<sup>−1</sup> and achieve a capacity retention of ~100% at different rates. This work verified that surface modification via ALD is a viable route for improving SIBs’ performances.https://www.mdpi.com/2504-477X/4/4/184sodium-ion batteriesatomic layer depositioncopper (I) sulfideanodesurface coating |
| spellingShingle | Jiyu Cai Zonghai Chen Xiangbo Meng Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer Deposition Journal of Composites Science sodium-ion batteries atomic layer deposition copper (I) sulfide anode surface coating |
| title | Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer Deposition |
| title_full | Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer Deposition |
| title_fullStr | Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer Deposition |
| title_full_unstemmed | Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer Deposition |
| title_short | Interfacial Stabilization of a Graphene-Wrapped Cu<sub>2</sub>S Anode for High-Performance Sodium-Ion Batteries via Atomic Layer Deposition |
| title_sort | interfacial stabilization of a graphene wrapped cu sub 2 sub s anode for high performance sodium ion batteries via atomic layer deposition |
| topic | sodium-ion batteries atomic layer deposition copper (I) sulfide anode surface coating |
| url | https://www.mdpi.com/2504-477X/4/4/184 |
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