Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite Electrolytes
Lithium-based batteries with improved safety performance are highly desired. At present, most safety hazard is the consequence of the ignition and flammability of organic liquid electrolytes. Dry ceramic-polymer composite electrolytes are attractive for their merits of non-flammability, reduced gas...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/6/4/117 |
| _version_ | 1797445612491243520 |
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| author | Jacob Denney Hong Huang |
| author_facet | Jacob Denney Hong Huang |
| author_sort | Jacob Denney |
| collection | DOAJ |
| description | Lithium-based batteries with improved safety performance are highly desired. At present, most safety hazard is the consequence of the ignition and flammability of organic liquid electrolytes. Dry ceramic-polymer composite electrolytes are attractive for their merits of non-flammability, reduced gas release, and thermal stability, in addition to their mechanical strength and flexibility. We recently fabricated free-standing solid composite electrolytes made up of polyethylene oxide (PEO), LiBF<sub>4</sub> salt, and Li<sub>1+x</sub>Al<sub>x</sub>Ge<sub>2−x</sub>(PO<sub>4</sub>)<sub>3</sub> (LAGP). This study is focused on analyzing the impacts of LAGP on the thermal decomposition characteristics in the series of PEO/LiBF<sub>4</sub>/LAGP composite membranes. It is found that the appropriate amount of LAGP can (1) significantly reduce the organic solvent trapped in the polymer network and (2) increase the peak temperature corresponding to the thermal degradation of the PEO/LiBF<sub>4</sub> complex. In the presence of LAGP, although the peak temperature related to the degradation of free PEO is reduced, the portion of free PEO, as well as its decomposition rate, is effectively reduced, resulting in slower gas release. |
| first_indexed | 2024-03-09T13:29:23Z |
| format | Article |
| id | doaj.art-91193a2d3d8440209388f446e1a16450 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T13:29:23Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-91193a2d3d8440209388f446e1a164502023-11-30T21:20:25ZengMDPI AGJournal of Composites Science2504-477X2022-04-016411710.3390/jcs6040117Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite ElectrolytesJacob Denney0Hong Huang1Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, USADepartment of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435, USALithium-based batteries with improved safety performance are highly desired. At present, most safety hazard is the consequence of the ignition and flammability of organic liquid electrolytes. Dry ceramic-polymer composite electrolytes are attractive for their merits of non-flammability, reduced gas release, and thermal stability, in addition to their mechanical strength and flexibility. We recently fabricated free-standing solid composite electrolytes made up of polyethylene oxide (PEO), LiBF<sub>4</sub> salt, and Li<sub>1+x</sub>Al<sub>x</sub>Ge<sub>2−x</sub>(PO<sub>4</sub>)<sub>3</sub> (LAGP). This study is focused on analyzing the impacts of LAGP on the thermal decomposition characteristics in the series of PEO/LiBF<sub>4</sub>/LAGP composite membranes. It is found that the appropriate amount of LAGP can (1) significantly reduce the organic solvent trapped in the polymer network and (2) increase the peak temperature corresponding to the thermal degradation of the PEO/LiBF<sub>4</sub> complex. In the presence of LAGP, although the peak temperature related to the degradation of free PEO is reduced, the portion of free PEO, as well as its decomposition rate, is effectively reduced, resulting in slower gas release.https://www.mdpi.com/2504-477X/6/4/117lithiumLAGPelectrolytecompositethermal decomposition |
| spellingShingle | Jacob Denney Hong Huang Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite Electrolytes Journal of Composites Science lithium LAGP electrolyte composite thermal decomposition |
| title | Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite Electrolytes |
| title_full | Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite Electrolytes |
| title_fullStr | Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite Electrolytes |
| title_full_unstemmed | Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite Electrolytes |
| title_short | Thermal Decomposition Characteristics of PEO/LiBF<sub>4</sub>/LAGP Composite Electrolytes |
| title_sort | thermal decomposition characteristics of peo libf sub 4 sub lagp composite electrolytes |
| topic | lithium LAGP electrolyte composite thermal decomposition |
| url | https://www.mdpi.com/2504-477X/6/4/117 |
| work_keys_str_mv | AT jacobdenney thermaldecompositioncharacteristicsofpeolibfsub4sublagpcompositeelectrolytes AT honghuang thermaldecompositioncharacteristicsofpeolibfsub4sublagpcompositeelectrolytes |