Rational Design of Effective Binders for LiFePO<sub>4</sub> Cathodes
Polymer binders are critical auxiliary additives to Li-ion batteries that provide adhesion and cohesion for electrodes to maintain conductive networks upon charge/discharge processes. Therefore, polymer binders become interconnected electrode structures affecting electrochemical performances, especi...
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MDPI AG
2021-09-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/18/3146 |
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| author | Shu Huang Xiaoting Huang Youyuan Huang Xueqin He Haitao Zhuo Shaojun Chen |
| author_facet | Shu Huang Xiaoting Huang Youyuan Huang Xueqin He Haitao Zhuo Shaojun Chen |
| author_sort | Shu Huang |
| collection | DOAJ |
| description | Polymer binders are critical auxiliary additives to Li-ion batteries that provide adhesion and cohesion for electrodes to maintain conductive networks upon charge/discharge processes. Therefore, polymer binders become interconnected electrode structures affecting electrochemical performances, especially in LiFePO<sub>4</sub> cathodes with one-dimensional Li<sup>+</sup> channels. In this paper, recent improvements in the polymer binders used in the LiFePO<sub>4</sub> cathodes of Li-ion batteries are reviewed in terms of structural design, synthetic methods, and working mechanisms. The polymer binders were classified into three types depending on their effects on the performances of LiFePO<sub>4</sub> cathodes. The first consisted of PVDF and related composites, and the second relied on waterborne and conductive binders. Profound insights into the ability of binder structures to enhance cathode performance were discovered. Overcoming the bottleneck shortage originating from olivine structure LiFePO<sub>4</sub> using efficient polymer structures is discussed. We forecast design principles for the polymer binders used in the high-performance LiFePO<sub>4</sub> cathodes of Li-ion batteries. Finally, perspectives on the application of future binder designs for electrodes with poor conductivity are presented to provide possible design directions for chemical structures. |
| first_indexed | 2024-03-10T07:16:57Z |
| format | Article |
| id | doaj.art-fac20576d081428b9039b58fe5ff111c |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T07:16:57Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-fac20576d081428b9039b58fe5ff111c2023-11-22T14:56:50ZengMDPI AGPolymers2073-43602021-09-011318314610.3390/polym13183146Rational Design of Effective Binders for LiFePO<sub>4</sub> CathodesShu Huang0Xiaoting Huang1Youyuan Huang2Xueqin He3Haitao Zhuo4Shaojun Chen5College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, ChinaGuangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, ChinaShenzhen BTR New Material Group Co., Ltd., High-Tech Industrial Park, Xitian, Gongming Town, Guangming New District, Shenzhen 518106, ChinaShenzhen BTR New Material Group Co., Ltd., High-Tech Industrial Park, Xitian, Gongming Town, Guangming New District, Shenzhen 518106, ChinaCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, ChinaGuangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, ChinaPolymer binders are critical auxiliary additives to Li-ion batteries that provide adhesion and cohesion for electrodes to maintain conductive networks upon charge/discharge processes. Therefore, polymer binders become interconnected electrode structures affecting electrochemical performances, especially in LiFePO<sub>4</sub> cathodes with one-dimensional Li<sup>+</sup> channels. In this paper, recent improvements in the polymer binders used in the LiFePO<sub>4</sub> cathodes of Li-ion batteries are reviewed in terms of structural design, synthetic methods, and working mechanisms. The polymer binders were classified into three types depending on their effects on the performances of LiFePO<sub>4</sub> cathodes. The first consisted of PVDF and related composites, and the second relied on waterborne and conductive binders. Profound insights into the ability of binder structures to enhance cathode performance were discovered. Overcoming the bottleneck shortage originating from olivine structure LiFePO<sub>4</sub> using efficient polymer structures is discussed. We forecast design principles for the polymer binders used in the high-performance LiFePO<sub>4</sub> cathodes of Li-ion batteries. Finally, perspectives on the application of future binder designs for electrodes with poor conductivity are presented to provide possible design directions for chemical structures.https://www.mdpi.com/2073-4360/13/18/3146polymer binderstructure designelectrochemical performanceLi-ion batteriesLiFePO<sub>4</sub> cathode |
| spellingShingle | Shu Huang Xiaoting Huang Youyuan Huang Xueqin He Haitao Zhuo Shaojun Chen Rational Design of Effective Binders for LiFePO<sub>4</sub> Cathodes Polymers polymer binder structure design electrochemical performance Li-ion batteries LiFePO<sub>4</sub> cathode |
| title | Rational Design of Effective Binders for LiFePO<sub>4</sub> Cathodes |
| title_full | Rational Design of Effective Binders for LiFePO<sub>4</sub> Cathodes |
| title_fullStr | Rational Design of Effective Binders for LiFePO<sub>4</sub> Cathodes |
| title_full_unstemmed | Rational Design of Effective Binders for LiFePO<sub>4</sub> Cathodes |
| title_short | Rational Design of Effective Binders for LiFePO<sub>4</sub> Cathodes |
| title_sort | rational design of effective binders for lifepo sub 4 sub cathodes |
| topic | polymer binder structure design electrochemical performance Li-ion batteries LiFePO<sub>4</sub> cathode |
| url | https://www.mdpi.com/2073-4360/13/18/3146 |
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