Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal Batteries
Composite polymer electrolytes (CPEs) incorporate the advantages of solid polymer electrolytes (SPEs) and inorganic solid electrolytes (ISEs), which have shown huge potential in the application of safe lithium-metal batteries (LMBs). Effectively avoiding the agglomeration of inorganic fillers in the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/15/2468 |
| _version_ | 1797525223861387264 |
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| author | Hui Zhan Mengjun Wu Rui Wang Shuohao Wu Hao Li Tian Tian Haolin Tang |
| author_facet | Hui Zhan Mengjun Wu Rui Wang Shuohao Wu Hao Li Tian Tian Haolin Tang |
| author_sort | Hui Zhan |
| collection | DOAJ |
| description | Composite polymer electrolytes (CPEs) incorporate the advantages of solid polymer electrolytes (SPEs) and inorganic solid electrolytes (ISEs), which have shown huge potential in the application of safe lithium-metal batteries (LMBs). Effectively avoiding the agglomeration of inorganic fillers in the polymer matrix during the organic–inorganic mixing process is very important for the properties of the composite electrolyte. Herein, a partial cross-linked PEO-based CPE was prepared by porous vinyl-functionalized silicon (p-V-SiO<sub>2</sub>) nanoparticles as fillers and poly (ethylene glycol diacrylate) (PEGDA) as cross-linkers. By combining the mechanical rigidity of ceramic fillers and the flexibility of PEO, the as-made electrolyte membranes had excellent mechanical properties. The big special surface area and pore volume of nanoparticles inhibited PEO recrystallization and promoted the dissolution of lithium salt. Chemical bonding improved the interfacial compatibility between organic and inorganic materials and facilitated the homogenization of lithium-ion flow. As a result, the symmetric Li|CPE|Li cells could operate stably over 450 h without a short circuit. All solid Li|LiFePO<sub>4</sub> batteries were constructed with this composite electrolyte and showed excellent rate and cycling performances. The first discharge-specific capacity of the assembled battery was 155.1 mA h g<sup>−1</sup>, and the capacity retention was 91% after operating for 300 cycles at 0.5 C. These results demonstrated that the chemical grafting of porous inorganic materials and cross-linking polymerization can greatly improve the properties of CPEs. |
| first_indexed | 2024-03-10T09:09:45Z |
| format | Article |
| id | doaj.art-02483561976647279979711be67df672 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T09:09:45Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-02483561976647279979711be67df6722023-11-22T06:03:22ZengMDPI AGPolymers2073-43602021-07-011315246810.3390/polym13152468Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal BatteriesHui Zhan0Mengjun Wu1Rui Wang2Shuohao Wu3Hao Li4Tian Tian5Haolin Tang6State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaComposite polymer electrolytes (CPEs) incorporate the advantages of solid polymer electrolytes (SPEs) and inorganic solid electrolytes (ISEs), which have shown huge potential in the application of safe lithium-metal batteries (LMBs). Effectively avoiding the agglomeration of inorganic fillers in the polymer matrix during the organic–inorganic mixing process is very important for the properties of the composite electrolyte. Herein, a partial cross-linked PEO-based CPE was prepared by porous vinyl-functionalized silicon (p-V-SiO<sub>2</sub>) nanoparticles as fillers and poly (ethylene glycol diacrylate) (PEGDA) as cross-linkers. By combining the mechanical rigidity of ceramic fillers and the flexibility of PEO, the as-made electrolyte membranes had excellent mechanical properties. The big special surface area and pore volume of nanoparticles inhibited PEO recrystallization and promoted the dissolution of lithium salt. Chemical bonding improved the interfacial compatibility between organic and inorganic materials and facilitated the homogenization of lithium-ion flow. As a result, the symmetric Li|CPE|Li cells could operate stably over 450 h without a short circuit. All solid Li|LiFePO<sub>4</sub> batteries were constructed with this composite electrolyte and showed excellent rate and cycling performances. The first discharge-specific capacity of the assembled battery was 155.1 mA h g<sup>−1</sup>, and the capacity retention was 91% after operating for 300 cycles at 0.5 C. These results demonstrated that the chemical grafting of porous inorganic materials and cross-linking polymerization can greatly improve the properties of CPEs.https://www.mdpi.com/2073-4360/13/15/2468lithium batteriescomposite polymer electrolyteschemical graftingporous nanoparticlescross-linking polymerizationsilane coupling |
| spellingShingle | Hui Zhan Mengjun Wu Rui Wang Shuohao Wu Hao Li Tian Tian Haolin Tang Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal Batteries Polymers lithium batteries composite polymer electrolytes chemical grafting porous nanoparticles cross-linking polymerization silane coupling |
| title | Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal Batteries |
| title_full | Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal Batteries |
| title_fullStr | Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal Batteries |
| title_full_unstemmed | Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal Batteries |
| title_short | Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO<sub>2</sub> Nanoparticles for Lithium Metal Batteries |
| title_sort | excellent performances of composite polymer electrolytes with porous vinyl functionalized sio sub 2 sub nanoparticles for lithium metal batteries |
| topic | lithium batteries composite polymer electrolytes chemical grafting porous nanoparticles cross-linking polymerization silane coupling |
| url | https://www.mdpi.com/2073-4360/13/15/2468 |
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