Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteries
Carbon nanotubes (CNTs) are being used as a conductive material to achieve fast charging/discharging properties in high current density LIB systems. However, it is difficult to form a well-distributed electron transfer network within the electrode using CNTs due to their high aggregational propertie...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248122002211 |
| _version_ | 1828070048574472192 |
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| author | Jae Hong Choi Chaewon Lee Sungwoo Park Mingi Hwang Tom James Embleton Kyungmok Ko Mina Jo Kashif Saleem Saqib Jeongsik Yun Minki Jo Yoonkook Son Pilgun Oh |
| author_facet | Jae Hong Choi Chaewon Lee Sungwoo Park Mingi Hwang Tom James Embleton Kyungmok Ko Mina Jo Kashif Saleem Saqib Jeongsik Yun Minki Jo Yoonkook Son Pilgun Oh |
| author_sort | Jae Hong Choi |
| collection | DOAJ |
| description | Carbon nanotubes (CNTs) are being used as a conductive material to achieve fast charging/discharging properties in high current density LIB systems. However, it is difficult to form a well-distributed electron transfer network within the electrode using CNTs due to their high aggregational properties. In this paper, we propose a strategy to fabricate the positive electrode with well-dispersed CNTs, controlling the solid content and sonication process of the slurry using LiNi0.8Co0.1Mn0.1O2 as the cathode materials. The CNTs are typically not well-mixed within the active material composite and aggregation occurs on the electrode surface in low solid content of under 50 wt%. When the solids content is as high as 70 %, CNTs are more evenly distributed in the electrode as bundled particles, however, there was no performance improvement using the ultra-sonication process. The CNTs at a mass ratio of CNTs at 4 wt% are well distributed in the electrode in 60 wt% of solid content, resulting in improved capacity retentions of 99.1 % after 100 cycles at a current density of 1C. When the electrochemical performance with CNTs was compared with Super P according to 1,2,3 and 4 wt% at a solid content of 60 %, the electrode using CNTs has a generally improved electrochemical performance due to the stable H1-M phase transition and stable average voltage during charging/discharging. Additionally, the excellent cycle ability at 5C with CNTs (92.8 % of capacity retention after 100 cycles) is helped by the fact that little polarization was observed compared with the Super P cells. |
| first_indexed | 2024-04-11T00:29:32Z |
| format | Article |
| id | doaj.art-761b5de2b91c4bc09d8823d33864f127 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-04-11T00:29:32Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-761b5de2b91c4bc09d8823d33864f1272023-01-08T04:13:45ZengElsevierElectrochemistry Communications1388-24812023-01-01146107419Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteriesJae Hong Choi0Chaewon Lee1Sungwoo Park2Mingi Hwang3Tom James Embleton4Kyungmok Ko5Mina Jo6Kashif Saleem Saqib7Jeongsik Yun8Minki Jo9Yoonkook Son10Pilgun Oh11Department of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Nanotechnology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Nanotechnology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of KoreaDepartment of Electrical Engineering, Chosun University, 309, Pilmun-daero, Dong-gu, Gwangju 61452, Republic of KoreaDepartment of Electrical Engineering, Chosun University, 309, Pilmun-daero, Dong-gu, Gwangju 61452, Republic of KoreaDepartment of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of Korea; Department of Nanotechnology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of Korea; Corresponding author at: Department of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan 48547, Republic of Korea.Carbon nanotubes (CNTs) are being used as a conductive material to achieve fast charging/discharging properties in high current density LIB systems. However, it is difficult to form a well-distributed electron transfer network within the electrode using CNTs due to their high aggregational properties. In this paper, we propose a strategy to fabricate the positive electrode with well-dispersed CNTs, controlling the solid content and sonication process of the slurry using LiNi0.8Co0.1Mn0.1O2 as the cathode materials. The CNTs are typically not well-mixed within the active material composite and aggregation occurs on the electrode surface in low solid content of under 50 wt%. When the solids content is as high as 70 %, CNTs are more evenly distributed in the electrode as bundled particles, however, there was no performance improvement using the ultra-sonication process. The CNTs at a mass ratio of CNTs at 4 wt% are well distributed in the electrode in 60 wt% of solid content, resulting in improved capacity retentions of 99.1 % after 100 cycles at a current density of 1C. When the electrochemical performance with CNTs was compared with Super P according to 1,2,3 and 4 wt% at a solid content of 60 %, the electrode using CNTs has a generally improved electrochemical performance due to the stable H1-M phase transition and stable average voltage during charging/discharging. Additionally, the excellent cycle ability at 5C with CNTs (92.8 % of capacity retention after 100 cycles) is helped by the fact that little polarization was observed compared with the Super P cells.http://www.sciencedirect.com/science/article/pii/S1388248122002211Conductive additiveSolid contentLithium-ion batteriesCarbon nanotubes |
| spellingShingle | Jae Hong Choi Chaewon Lee Sungwoo Park Mingi Hwang Tom James Embleton Kyungmok Ko Mina Jo Kashif Saleem Saqib Jeongsik Yun Minki Jo Yoonkook Son Pilgun Oh Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteries Electrochemistry Communications Conductive additive Solid content Lithium-ion batteries Carbon nanotubes |
| title | Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteries |
| title_full | Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteries |
| title_fullStr | Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteries |
| title_full_unstemmed | Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteries |
| title_short | Improved electrochemical performance using well-dispersed carbon nanotubes as conductive additive in the Ni-rich positive electrode of lithium-ion batteries |
| title_sort | improved electrochemical performance using well dispersed carbon nanotubes as conductive additive in the ni rich positive electrode of lithium ion batteries |
| topic | Conductive additive Solid content Lithium-ion batteries Carbon nanotubes |
| url | http://www.sciencedirect.com/science/article/pii/S1388248122002211 |
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