Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser Ablation
The electrochemical performance of lithium-ion batteries is directly influenced by type of active material as well as its morphology. In order to evaluate the impact of particle morphology in thick-film electrodes, Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub&g...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/11/2962 |
| _version_ | 1827675795144835072 |
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| author | Zelai Song Penghui Zhu Wilhelm Pfleging Jiyu Sun |
| author_facet | Zelai Song Penghui Zhu Wilhelm Pfleging Jiyu Sun |
| author_sort | Zelai Song |
| collection | DOAJ |
| description | The electrochemical performance of lithium-ion batteries is directly influenced by type of active material as well as its morphology. In order to evaluate the impact of particle morphology in thick-film electrodes, Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> (NMC 622) cathodes with bilayer structure consisting of two different particle sizes were manufactured and electrochemically characterized in coin cells design. The hierarchical thick-film electrodes were generated by multiple casting using NMC 622 (TA) with small particle size of 6.7 µm and NMC 622 (BA) with large particle size of 12.8 µm. Besides, reference electrodes with one type of active material as well as with two type of materials established during mixing process (BT) were manufactured. The total film thickness of all hierarchical composite electrodes were kept constant at 150 µm, while the thicknesses of TA and BA were set at 1:2, 1:1, and 2:1. Meanwhile, three kinds of thin-film cathodes with 70 µm were applied to represent the state-of-the-art approach. Subsequently, ultrafast laser ablation was applied to generate groove structures inside the electrodes. The results demonstrate that cells with thin-film or thick-film cathode only containing TA, cells with bilayer electrode containing TBA 1:2, and cells with laser-structured electrodes show higher capacity at C/2 to 5C, respectively. |
| first_indexed | 2024-03-10T05:12:48Z |
| format | Article |
| id | doaj.art-5ac2782089d543f99ac82cbbd9d54a4e |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T05:12:48Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-5ac2782089d543f99ac82cbbd9d54a4e2023-11-23T00:41:08ZengMDPI AGNanomaterials2079-49912021-11-011111296210.3390/nano11112962Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser AblationZelai Song0Penghui Zhu1Wilhelm Pfleging2Jiyu Sun3Institute for Applied Materials—Applied Materials Physics (IAM-AWP), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Applied Materials—Applied Materials Physics (IAM-AWP), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Applied Materials—Applied Materials Physics (IAM-AWP), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyKey Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun 130022, ChinaThe electrochemical performance of lithium-ion batteries is directly influenced by type of active material as well as its morphology. In order to evaluate the impact of particle morphology in thick-film electrodes, Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> (NMC 622) cathodes with bilayer structure consisting of two different particle sizes were manufactured and electrochemically characterized in coin cells design. The hierarchical thick-film electrodes were generated by multiple casting using NMC 622 (TA) with small particle size of 6.7 µm and NMC 622 (BA) with large particle size of 12.8 µm. Besides, reference electrodes with one type of active material as well as with two type of materials established during mixing process (BT) were manufactured. The total film thickness of all hierarchical composite electrodes were kept constant at 150 µm, while the thicknesses of TA and BA were set at 1:2, 1:1, and 2:1. Meanwhile, three kinds of thin-film cathodes with 70 µm were applied to represent the state-of-the-art approach. Subsequently, ultrafast laser ablation was applied to generate groove structures inside the electrodes. The results demonstrate that cells with thin-film or thick-film cathode only containing TA, cells with bilayer electrode containing TBA 1:2, and cells with laser-structured electrodes show higher capacity at C/2 to 5C, respectively.https://www.mdpi.com/2079-4991/11/11/2962lithium-ion batterycathodesNMC 622multilayerhierarchical structurelaser structure |
| spellingShingle | Zelai Song Penghui Zhu Wilhelm Pfleging Jiyu Sun Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser Ablation Nanomaterials lithium-ion battery cathodes NMC 622 multilayer hierarchical structure laser structure |
| title | Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser Ablation |
| title_full | Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser Ablation |
| title_fullStr | Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser Ablation |
| title_full_unstemmed | Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser Ablation |
| title_short | Electrochemical Performance of Thick-Film Li(Ni<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>)O<sub>2</sub> Cathode with Hierarchic Structures and Laser Ablation |
| title_sort | electrochemical performance of thick film li ni sub 0 6 sub mn sub 0 2 sub co sub 0 2 sub o sub 2 sub cathode with hierarchic structures and laser ablation |
| topic | lithium-ion battery cathodes NMC 622 multilayer hierarchical structure laser structure |
| url | https://www.mdpi.com/2079-4991/11/11/2962 |
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