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

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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Autores principales: Zelai Song, Penghui Zhu, Wilhelm Pfleging, Jiyu Sun
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
lithium-ion battery
cathodes
NMC 622
multilayer
hierarchical structure
laser structure
Chemistry
QD1-999
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spelling oai:doaj.org-article:5ac2782089d543f99ac82cbbd9d54a4e2021-11-25T18:31:14ZElectrochemical 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 Ablation10.3390/nano111129622079-4991https://doaj.org/article/5ac2782089d543f99ac82cbbd9d54a4e2021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2962https://doaj.org/toc/2079-4991The 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.Zelai SongPenghui ZhuWilhelm PflegingJiyu SunMDPI AGarticlelithium-ion batterycathodesNMC 622multilayerhierarchical structurelaser structureChemistryQD1-999ENNanomaterials, Vol 11, Iss 2962, p 2962 (2021)
institution DOAJ
collection DOAJ
language EN
topic lithium-ion battery
cathodes
NMC 622
multilayer
hierarchical structure
laser structure
Chemistry
QD1-999
spellingShingle lithium-ion battery
cathodes
NMC 622
multilayer
hierarchical structure
laser structure
Chemistry
QD1-999
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
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.
format article
author Zelai Song
Penghui Zhu
Wilhelm Pfleging
Jiyu Sun
author_facet Zelai Song
Penghui Zhu
Wilhelm Pfleging
Jiyu Sun
author_sort Zelai Song
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_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_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_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
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/5ac2782089d543f99ac82cbbd9d54a4e
work_keys_str_mv AT zelaisong electrochemicalperformanceofthickfilmlinisub06submnsub02subcosub02subosub2subcathodewithhierarchicstructuresandlaserablation
AT penghuizhu electrochemicalperformanceofthickfilmlinisub06submnsub02subcosub02subosub2subcathodewithhierarchicstructuresandlaserablation
AT wilhelmpfleging electrochemicalperformanceofthickfilmlinisub06submnsub02subcosub02subosub2subcathodewithhierarchicstructuresandlaserablation
AT jiyusun electrochemicalperformanceofthickfilmlinisub06submnsub02subcosub02subosub2subcathodewithhierarchicstructuresandlaserablation
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