Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathode
To investigate the relationship between calendaring temperature and the microstructure and performance of cathode for Li-ion batteries （LIBs）， two kinds of cathodes at calendaring temperatures of 25 ℃ and 150 ℃ were prepared by two-high rolling mill， respectively. The effects of calendaring temperat...
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Journal of Materials Engineering
2024-11-01
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| Series: | Cailiao gongcheng |
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| Online Access: | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000352 |
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| author | SHAO Haitao YAN Huajun WANG Wei WU Han YUAN Zhenge CUI Liansen |
| author_facet | SHAO Haitao YAN Huajun WANG Wei WU Han YUAN Zhenge CUI Liansen |
| author_sort | SHAO Haitao |
| collection | DOAJ |
| description | To investigate the relationship between calendaring temperature and the microstructure and performance of cathode for Li-ion batteries （LIBs）， two kinds of cathodes at calendaring temperatures of 25 ℃ and 150 ℃ were prepared by two-high rolling mill， respectively. The effects of calendaring temperature on microstructure， thickness consistency， mechanical， and electrochemical properties of cathode were studied. The results show that with the increasing calendaring temperature， the compaction density of cathode coating particles increases significantly， the pore size is smaller， the carbon adhesive phase is uniformly distributed on the active particles， the coating particles are broken， cracks， holes， and other defects decrease， and the cathode structure of conductive/bonding network is easier to form. Compared with the room-temperature calendaring cathode， the thickness consistency of hot calendaring cathode is improved， the rebound rate is reduced by 50%， and the pole sheet bond strength increases from 182.77 N/m to 237.37 N/m， increasing 29.87%. The tensile strength increases from 20.47 MPa to 24.44 MPa， increasing 19.39%. The electrode resistivity decreases from 158.05 Ω·cm to 119.41 Ω·cm， decreasing 24.45%. The electrical conductivity increases from 0.63 S/m to 0.84 S/m， increasing 33.33%. After being assembled as LIBs， the electrochemical performance of the hot calendaring cathode is better than that of the room-temperature calendaring cathode. The cycling capacity retention increases by 18.65%. The cathode performance can be improved moderately by adjusting the calendaring temperature and other technological parameters， providing a research basis for optimizing cathode performance during the LIBs electrodes industrial preparation. |
| format | Article |
| id | doaj-art-d0cab80988ae43249d9d6f5cea8962c2 |
| institution | OA Journals |
| issn | 1001-4381 |
| language | zho |
| publishDate | 2024-11-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj-art-d0cab80988ae43249d9d6f5cea8962c22025-08-20T02:05:13ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812024-11-01521115816510.11868/j.issn.1001-4381.2023.0003521001-4381（2024）11-0158-08Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathodeSHAO Haitao0YAN Huajun1WANG Wei2WU Han3YUAN Zhenge4CUI Liansen5Hebei Key Laboratory of Near-net Forming Technology for Materials， College of Materials Science and Engineering，Hebei University of Science and Technology，Shijiazhuang 050018，ChinaCollege of Mechanical Engineering，Hebei University of Science and Technology， Shijiazhuang 050018，ChinaHebei Key Laboratory of Near-net Forming Technology for Materials， College of Materials Science and Engineering，Hebei University of Science and Technology，Shijiazhuang 050018，ChinaHebei Key Laboratory of Near-net Forming Technology for Materials， College of Materials Science and Engineering，Hebei University of Science and Technology，Shijiazhuang 050018，ChinaXingtai Naknor Technology;Co.，Ltd.，Xingtai 054001，Hebei，ChinaHebei Engineering Technology Research Center of Precision Punching Process and Die，Cangzhou Huibang Electrical & Mechanical;（Group） Co.，Ltd.，Cangzhou 061500，Hebei，ChinaTo investigate the relationship between calendaring temperature and the microstructure and performance of cathode for Li-ion batteries （LIBs）， two kinds of cathodes at calendaring temperatures of 25 ℃ and 150 ℃ were prepared by two-high rolling mill， respectively. The effects of calendaring temperature on microstructure， thickness consistency， mechanical， and electrochemical properties of cathode were studied. The results show that with the increasing calendaring temperature， the compaction density of cathode coating particles increases significantly， the pore size is smaller， the carbon adhesive phase is uniformly distributed on the active particles， the coating particles are broken， cracks， holes， and other defects decrease， and the cathode structure of conductive/bonding network is easier to form. Compared with the room-temperature calendaring cathode， the thickness consistency of hot calendaring cathode is improved， the rebound rate is reduced by 50%， and the pole sheet bond strength increases from 182.77 N/m to 237.37 N/m， increasing 29.87%. The tensile strength increases from 20.47 MPa to 24.44 MPa， increasing 19.39%. The electrode resistivity decreases from 158.05 Ω·cm to 119.41 Ω·cm， decreasing 24.45%. The electrical conductivity increases from 0.63 S/m to 0.84 S/m， increasing 33.33%. After being assembled as LIBs， the electrochemical performance of the hot calendaring cathode is better than that of the room-temperature calendaring cathode. The cycling capacity retention increases by 18.65%. The cathode performance can be improved moderately by adjusting the calendaring temperature and other technological parameters， providing a research basis for optimizing cathode performance during the LIBs electrodes industrial preparation.https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000352lithium-ion batterycalendaring temperaturemicrostructuremechanical propertyelectrochemical performance |
| spellingShingle | SHAO Haitao YAN Huajun WANG Wei WU Han YUAN Zhenge CUI Liansen Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathode Cailiao gongcheng lithium-ion battery calendaring temperature microstructure mechanical property electrochemical performance |
| title | Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathode |
| title_full | Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathode |
| title_fullStr | Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathode |
| title_full_unstemmed | Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathode |
| title_short | Effect of calendaring temperature on microstructure and properties for Li-ion batteries cathode |
| title_sort | effect of calendaring temperature on microstructure and properties for li ion batteries cathode |
| topic | lithium-ion battery calendaring temperature microstructure mechanical property electrochemical performance |
| url | https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000352 |
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