The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current Collectors
The aqueous processing of cathode materials for lithium-ion batteries (LIBs) has both environmental and cost benefits. However, high-loading, water-based electrodes from the layered oxides (e.g., NMC) typically exhibit worse electrochemical performance than NMP-based electrodes. In this work, primar...
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MDPI AG
2024-03-01
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| Online Access: | https://www.mdpi.com/2313-0105/10/3/100 |
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| author | Yuri Surace Marcus Jahn Damian M. Cupid |
| author_facet | Yuri Surace Marcus Jahn Damian M. Cupid |
| author_sort | Yuri Surace |
| collection | DOAJ |
| description | The aqueous processing of cathode materials for lithium-ion batteries (LIBs) has both environmental and cost benefits. However, high-loading, water-based electrodes from the layered oxides (e.g., NMC) typically exhibit worse electrochemical performance than NMP-based electrodes. In this work, primary, binary, and ternary binder mixtures of aqueous binders such as CMC, PAA, PEO, SBR, and Na alginate, in combination with bare and C-coated Al current collectors, were explored, aiming to improve the rate capability performance of NMC811 electrodes with high areal capacity (≥4 mAh cm<sup>−2</sup>) and low binder content (3 wt.%). Electrodes with a ternary binder composition (CMC:PAA:SBR) have the best performance with bare Al current collectors, attaining a specific capacity of 150 mAh g<sup>−1</sup> at 1C. Using carbon-coated Al current collectors results in improved performance for both water- and NMP-based electrodes. This is further accentuated for Na-Alg and CMC:PAA binder compositions. These electrodes show specific capacities of 170 and 80 mAh g<sup>−1</sup> at 1C and 2C, respectively. Although the specific capacities at 1C are comparable to those for NMP-PVDF electrodes, they are approximately 50% higher at the 2C rate. This study aims to contribute to the development of sustainably processed NMC electrodes for high energy density LIBs using water as solvent. |
| first_indexed | 2024-04-24T18:33:59Z |
| format | Article |
| id | doaj.art-ffbf021931754bb099e285eb43f34ff7 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-04-24T18:33:59Z |
| publishDate | 2024-03-01 |
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| spelling | doaj.art-ffbf021931754bb099e285eb43f34ff72024-03-27T13:21:15ZengMDPI AGBatteries2313-01052024-03-0110310010.3390/batteries10030100The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current CollectorsYuri Surace0Marcus Jahn1Damian M. Cupid2Battery Technologies, Center for Transport Technologies, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, AustriaBattery Technologies, Center for Transport Technologies, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, AustriaBattery Technologies, Center for Transport Technologies, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, AustriaThe aqueous processing of cathode materials for lithium-ion batteries (LIBs) has both environmental and cost benefits. However, high-loading, water-based electrodes from the layered oxides (e.g., NMC) typically exhibit worse electrochemical performance than NMP-based electrodes. In this work, primary, binary, and ternary binder mixtures of aqueous binders such as CMC, PAA, PEO, SBR, and Na alginate, in combination with bare and C-coated Al current collectors, were explored, aiming to improve the rate capability performance of NMC811 electrodes with high areal capacity (≥4 mAh cm<sup>−2</sup>) and low binder content (3 wt.%). Electrodes with a ternary binder composition (CMC:PAA:SBR) have the best performance with bare Al current collectors, attaining a specific capacity of 150 mAh g<sup>−1</sup> at 1C. Using carbon-coated Al current collectors results in improved performance for both water- and NMP-based electrodes. This is further accentuated for Na-Alg and CMC:PAA binder compositions. These electrodes show specific capacities of 170 and 80 mAh g<sup>−1</sup> at 1C and 2C, respectively. Although the specific capacities at 1C are comparable to those for NMP-PVDF electrodes, they are approximately 50% higher at the 2C rate. This study aims to contribute to the development of sustainably processed NMC electrodes for high energy density LIBs using water as solvent.https://www.mdpi.com/2313-0105/10/3/100NMC811aqueous processinghigh-loading electrodeswater-based electrodesaqueous binderscarbon-coated aluminum current collector |
| spellingShingle | Yuri Surace Marcus Jahn Damian M. Cupid The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current Collectors Batteries NMC811 aqueous processing high-loading electrodes water-based electrodes aqueous binders carbon-coated aluminum current collector |
| title | The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current Collectors |
| title_full | The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current Collectors |
| title_fullStr | The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current Collectors |
| title_full_unstemmed | The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current Collectors |
| title_short | The Rate Capability Performance of High-Areal-Capacity Water-Based NMC811 Electrodes: The Role of Binders and Current Collectors |
| title_sort | rate capability performance of high areal capacity water based nmc811 electrodes the role of binders and current collectors |
| topic | NMC811 aqueous processing high-loading electrodes water-based electrodes aqueous binders carbon-coated aluminum current collector |
| url | https://www.mdpi.com/2313-0105/10/3/100 |
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