Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries
All-solid-state lithium batteries are considered the most promising type of lithium batteries for achieving high energy density and safety. However, they suffer from challenges related to increasing the ionic conductivity, improving interfacial contact between the electrode and electrolyte, and supp...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2025
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| Online Access: | http://umpir.ump.edu.my/id/eprint/44317/ http://umpir.ump.edu.my/id/eprint/44317/1/Solvent-free%20semi-interpenetrating%20composite%20polymer%20electrolyte.pdf |
| _version_ | 1848827075628105728 |
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| author | Ghufira, . Wu, Yi–Shiuan Wu, She–Huang Chang, Jeng-Kuei Jose, Rajan Yang, Chun-Chen |
| author_facet | Ghufira, . Wu, Yi–Shiuan Wu, She–Huang Chang, Jeng-Kuei Jose, Rajan Yang, Chun-Chen |
| author_sort | Ghufira, . |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | All-solid-state lithium batteries are considered the most promising type of lithium batteries for achieving high energy density and safety. However, they suffer from challenges related to increasing the ionic conductivity, improving interfacial contact between the electrode and electrolyte, and suppressing the dendrite formation of lithium metal during charge-discharge cycles. In this work, a solid polymer electrolyte (SPE) was fabricated via a simple and fast method via ultraviolet (UV) curing to synthesize an all-solid-state polymer membrane with a semi-interpenetrating network. This solvent-free SPE was fabricated using poly (ethylene glycol) diacrylate, lithium bis(trifluoromethanesulfonyl)imide and lithium difluoro(oxalate)borate as salt with tetraethylene glycol dimethyl ether plasticizer. A commercial thin polyethylene separator was used to reinforce the dual-salt solid polymer electrolyte (DS-SPE). The DS-SPE has an average thickness, ionic conductivity, electrochemical stability window, activation energy (Ea), and transference number (tLi+) of ∼40 μm, 3.74 × 10−4 S cm−1 at 70 °C, 5.05 V at room temperature, 0.25 eV and 0.55, respectively. Our DS-SPE membrane achieved stable and uniform lithium stripping/plating in a symmetric cell for 600 h at 0.2 mA cm −2 and an areal capacity of 0.5 mAh cm −2 at 40 °C without short circuits. The Li/DS-SPE/LiFePO4 full cell demonstrated high stability with 100 % Coulombic efficiency and 94.20 % capacity retention at 1C rate after 100 cycles at 40 °C. The electrochemical performances of the cell based on our DS-SPE indicated that our novel DS-SPE is a promising candidate for solid-state lithium batteries applications. |
| first_indexed | 2025-11-15T03:54:57Z |
| format | Article |
| id | ump-44317 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:54:57Z |
| publishDate | 2025 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-443172025-04-17T01:05:57Z http://umpir.ump.edu.my/id/eprint/44317/ Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries Ghufira, . Wu, Yi–Shiuan Wu, She–Huang Chang, Jeng-Kuei Jose, Rajan Yang, Chun-Chen HD Industries. Land use. Labor TA Engineering (General). Civil engineering (General) TP Chemical technology All-solid-state lithium batteries are considered the most promising type of lithium batteries for achieving high energy density and safety. However, they suffer from challenges related to increasing the ionic conductivity, improving interfacial contact between the electrode and electrolyte, and suppressing the dendrite formation of lithium metal during charge-discharge cycles. In this work, a solid polymer electrolyte (SPE) was fabricated via a simple and fast method via ultraviolet (UV) curing to synthesize an all-solid-state polymer membrane with a semi-interpenetrating network. This solvent-free SPE was fabricated using poly (ethylene glycol) diacrylate, lithium bis(trifluoromethanesulfonyl)imide and lithium difluoro(oxalate)borate as salt with tetraethylene glycol dimethyl ether plasticizer. A commercial thin polyethylene separator was used to reinforce the dual-salt solid polymer electrolyte (DS-SPE). The DS-SPE has an average thickness, ionic conductivity, electrochemical stability window, activation energy (Ea), and transference number (tLi+) of ∼40 μm, 3.74 × 10−4 S cm−1 at 70 °C, 5.05 V at room temperature, 0.25 eV and 0.55, respectively. Our DS-SPE membrane achieved stable and uniform lithium stripping/plating in a symmetric cell for 600 h at 0.2 mA cm −2 and an areal capacity of 0.5 mAh cm −2 at 40 °C without short circuits. The Li/DS-SPE/LiFePO4 full cell demonstrated high stability with 100 % Coulombic efficiency and 94.20 % capacity retention at 1C rate after 100 cycles at 40 °C. The electrochemical performances of the cell based on our DS-SPE indicated that our novel DS-SPE is a promising candidate for solid-state lithium batteries applications. Elsevier Ltd 2025-02 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/44317/1/Solvent-free%20semi-interpenetrating%20composite%20polymer%20electrolyte.pdf Ghufira, . and Wu, Yi–Shiuan and Wu, She–Huang and Chang, Jeng-Kuei and Jose, Rajan and Yang, Chun-Chen (2025) Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries. Journal of Energy Storage, 110 (115335). pp. 1-14. ISSN 2352-152X. (Published) https://doi.org/10.1016/j.est.2025.115335 https://doi.org/10.1016/j.est.2025.115335 |
| spellingShingle | HD Industries. Land use. Labor TA Engineering (General). Civil engineering (General) TP Chemical technology Ghufira, . Wu, Yi–Shiuan Wu, She–Huang Chang, Jeng-Kuei Jose, Rajan Yang, Chun-Chen Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries |
| title | Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries |
| title_full | Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries |
| title_fullStr | Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries |
| title_full_unstemmed | Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries |
| title_short | Solvent-free semi-interpenetrating composite polymer electrolyte based on dual Li-salt for solid-state lithium batteries |
| title_sort | solvent-free semi-interpenetrating composite polymer electrolyte based on dual li-salt for solid-state lithium batteries |
| topic | HD Industries. Land use. Labor TA Engineering (General). Civil engineering (General) TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/44317/ http://umpir.ump.edu.my/id/eprint/44317/ http://umpir.ump.edu.my/id/eprint/44317/ http://umpir.ump.edu.my/id/eprint/44317/1/Solvent-free%20semi-interpenetrating%20composite%20polymer%20electrolyte.pdf |