The effects of different dry mixing methods and coating concentration to NMC-811 battery performance
Due to the emerging environmental issues, lithium-ion batteries (LIBs) have become one of many alternatives that account for a large proportion of the current battery market and have wide applications in our daily lives. Among many variations of lithium-ion batteries, NMC-811 batteries (LiNi0.8Co0.1...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/157958 |
| _version_ | 1811687426080374784 |
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| author | Leo, Kelvin |
| author2 | Alex Yan Qingyu |
| author_facet | Alex Yan Qingyu Leo, Kelvin |
| author_sort | Leo, Kelvin |
| collection | NTU |
| description | Due to the emerging environmental issues, lithium-ion batteries (LIBs) have become one of many alternatives that account for a large proportion of the current battery market and have wide applications in our daily lives. Among many variations of lithium-ion batteries, NMC-811 batteries (LiNi0.8Co0.1Mn0.1O2) are favourable due to their high performance yet low-cost materials. However, some issues emerge from this type of battery: microcracks, phase transformation, and side reactions between electrolytes and their surrounding environment. These issues decrease the overall battery performance.
Coating has become one of the most efficient solutions to tackle these issues. By covering the host particles (cathodes), it is efficient to prevent direct contact between the environment (liquid electrolyte, air, and moisture) and the active materials inside the cathode. Currently, there is an increasing number of studies on the dry coating method because of its environmental benign and low-energy process.
In this study, two different methods of dry coating process are conducted: vertical stirring method and 3D mixing method. These two different methods significantly affect the morphological structure and the porosity of the particles, which affect the overall battery performance. Samples were also prepared to investigate the effect of different coating concentrations on the battery electrochemical performance, especially cyclability and retention rate. |
| first_indexed | 2024-10-01T05:16:07Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/157958 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:16:07Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1579582022-06-03T03:36:35Z The effects of different dry mixing methods and coating concentration to NMC-811 battery performance Leo, Kelvin Alex Yan Qingyu School of Materials Science and Engineering AlexYan@ntu.edu.sg Engineering::Materials::Energy materials Due to the emerging environmental issues, lithium-ion batteries (LIBs) have become one of many alternatives that account for a large proportion of the current battery market and have wide applications in our daily lives. Among many variations of lithium-ion batteries, NMC-811 batteries (LiNi0.8Co0.1Mn0.1O2) are favourable due to their high performance yet low-cost materials. However, some issues emerge from this type of battery: microcracks, phase transformation, and side reactions between electrolytes and their surrounding environment. These issues decrease the overall battery performance. Coating has become one of the most efficient solutions to tackle these issues. By covering the host particles (cathodes), it is efficient to prevent direct contact between the environment (liquid electrolyte, air, and moisture) and the active materials inside the cathode. Currently, there is an increasing number of studies on the dry coating method because of its environmental benign and low-energy process. In this study, two different methods of dry coating process are conducted: vertical stirring method and 3D mixing method. These two different methods significantly affect the morphological structure and the porosity of the particles, which affect the overall battery performance. Samples were also prepared to investigate the effect of different coating concentrations on the battery electrochemical performance, especially cyclability and retention rate. Bachelor of Engineering (Materials Engineering) 2022-06-03T03:36:35Z 2022-06-03T03:36:35Z 2022 Final Year Project (FYP) Leo, K. (2022). The effects of different dry mixing methods and coating concentration to NMC-811 battery performance. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/157958 https://hdl.handle.net/10356/157958 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials::Energy materials Leo, Kelvin The effects of different dry mixing methods and coating concentration to NMC-811 battery performance |
| title | The effects of different dry mixing methods and coating concentration to NMC-811 battery performance |
| title_full | The effects of different dry mixing methods and coating concentration to NMC-811 battery performance |
| title_fullStr | The effects of different dry mixing methods and coating concentration to NMC-811 battery performance |
| title_full_unstemmed | The effects of different dry mixing methods and coating concentration to NMC-811 battery performance |
| title_short | The effects of different dry mixing methods and coating concentration to NMC-811 battery performance |
| title_sort | effects of different dry mixing methods and coating concentration to nmc 811 battery performance |
| topic | Engineering::Materials::Energy materials |
| url | https://hdl.handle.net/10356/157958 |
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