Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries
A partially neutralized polyacrylic acid (Pn-PAA) is used for coating sub-micron-sized α-alumina on a conventional microporous polyolefin separator, fabricating a ceramic-coated separator (CCS). Pn-PAA acts as a dispersant and binder by adsorbing itself on alpha(α)-alumina surfaces under acidic cond...
| Principais autores: | , , , , , , |
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| Outros Autores: | |
| Formato: | Journal Article |
| Idioma: | English |
| Publicado em: |
2023
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| Assuntos: | |
| Acesso em linha: | https://hdl.handle.net/10356/171301 |
| _version_ | 1826112883632635904 |
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| author | Thang, Ai Qin Shen, Yuejun Shi, Zugui Yao, Ge Wong, Sun Yew Liu, Zhaolin Yan, Qingyu |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Thang, Ai Qin Shen, Yuejun Shi, Zugui Yao, Ge Wong, Sun Yew Liu, Zhaolin Yan, Qingyu |
| author_sort | Thang, Ai Qin |
| collection | NTU |
| description | A partially neutralized polyacrylic acid (Pn-PAA) is used for coating sub-micron-sized α-alumina on a conventional microporous polyolefin separator, fabricating a ceramic-coated separator (CCS). Pn-PAA acts as a dispersant and binder by adsorbing itself on alpha(α)-alumina surfaces under acidic condition through the columbic interaction, providing a repulsive force to disperse fine alumina in aqueous suspension, and binds alumina strongly on plasma-treated separator through hydrogen bonding. This CCS shows favorable wettability in carbonate-based liquid electrolyte and ionic conduction due to the high hydrophilicity of Pn-PAA and alumina. With that, this study found that Pn-PAA-made-CCS yields a substantial adhesion strength of ~106 N/m with enhanced cycle stability, a specific capacity of 145.0 mAh/g after 200 cycles at 1 C at room temperature in half cells (LFP/Li metal). |
| first_indexed | 2024-10-01T03:14:23Z |
| format | Journal Article |
| id | ntu-10356/171301 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:14:23Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1713012023-10-23T06:12:53Z Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries Thang, Ai Qin Shen, Yuejun Shi, Zugui Yao, Ge Wong, Sun Yew Liu, Zhaolin Yan, Qingyu School of Materials Science and Engineering Engineering::Materials Aluminum Oxide Partially-Neutralized Polyacrylic Acid A partially neutralized polyacrylic acid (Pn-PAA) is used for coating sub-micron-sized α-alumina on a conventional microporous polyolefin separator, fabricating a ceramic-coated separator (CCS). Pn-PAA acts as a dispersant and binder by adsorbing itself on alpha(α)-alumina surfaces under acidic condition through the columbic interaction, providing a repulsive force to disperse fine alumina in aqueous suspension, and binds alumina strongly on plasma-treated separator through hydrogen bonding. This CCS shows favorable wettability in carbonate-based liquid electrolyte and ionic conduction due to the high hydrophilicity of Pn-PAA and alumina. With that, this study found that Pn-PAA-made-CCS yields a substantial adhesion strength of ~106 N/m with enhanced cycle stability, a specific capacity of 145.0 mAh/g after 200 cycles at 1 C at room temperature in half cells (LFP/Li metal). Economic Development Board (EDB) Ministry of Education (MOE) The author swould like to thank the funding support by Singapore Economic Development Board (EDB) under grant titled Industrial Postgraduate Programme (IPP); and the funding support from Singapore MOE AcRF Tier1 grant no. 2020-T1-001-031 and RT6/22. 2023-10-23T06:12:53Z 2023-10-23T06:12:53Z 2023 Journal Article Thang, A. Q., Shen, Y., Shi, Z., Yao, G., Wong, S. Y., Liu, Z. & Yan, Q. (2023). Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries. Chemistry - An Asian Journal, 18(18), e202300538-. https://dx.doi.org/10.1002/asia.202300538 1861-4728 https://hdl.handle.net/10356/171301 10.1002/asia.202300538 37544905 2-s2.0-85167401683 18 18 e202300538 en 2020-T1-001-031 RT6/22 Chemistry - An Asian Journal © 2023 Wiley-VCH G. All rights reserved. |
| spellingShingle | Engineering::Materials Aluminum Oxide Partially-Neutralized Polyacrylic Acid Thang, Ai Qin Shen, Yuejun Shi, Zugui Yao, Ge Wong, Sun Yew Liu, Zhaolin Yan, Qingyu Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries |
| title | Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries |
| title_full | Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries |
| title_fullStr | Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries |
| title_full_unstemmed | Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries |
| title_short | Partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic-coated separators for lithium-ion batteries |
| title_sort | partially neutralized polyacrylic acid as an efficient binder for aqueous ceramic coated separators for lithium ion batteries |
| topic | Engineering::Materials Aluminum Oxide Partially-Neutralized Polyacrylic Acid |
| url | https://hdl.handle.net/10356/171301 |
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