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Ultrathin, flexible, solid polymer composite electrolyte enabled with aligned nanoporous host for lithium batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wan, Jiayu Kong, Xian Liu, Kexian Shi, Feifei Pei, Allen Chen, Huiying Chen, Wei Chen, Jiaye Zhang, Xiaokun Zong, Linqi Wang, Jiangyan Chen, Long-Qing Qin, Jian |
| Copyright Year | 2019 |
| Abstract | The urgent need for safer batteries is leading research to all-solid-state lithium-based cells. To achieve energy density comparable to liquid electrolyte-based cells, ultrathin and lightweight solid electrolytes with high ionic conductivity are desired. However, solid electrolytes with comparable thicknesses to commercial polymer electrolyte separators (~10 μm) used in liquid electrolytes remain challenging to make because of the increased risk of short-circuiting the battery. Here, we report on a polymer–polymer solid-state electrolyte design, demonstrated with an 8.6-μm-thick nanoporous polyimide (PI) film filled with polyethylene oxide/lithium bis(trifluoromethanesulfonyl)imide (PEO/LiTFSI) that can be used as a safe solid polymer electrolyte. The PI film is nonflammable and mechanically strong, preventing batteries from short-circuiting even after more than 1,000 h of cycling, and the vertical channels enhance the ionic conductivity (2.3 × 10−4 S cm−1 at 30 °C) of the infused polymer electrolyte. All-solid-state lithium-ion batteries fabricated with PI/PEO/LiTFSI solid electrolyte show good cycling performance (200 cycles at C/2 rate) at 60 °C and withstand abuse tests such as bending, cutting and nail penetration.A nanoporous polyimide film filled with a solid polymer electrolyte has high ionic conductivity and high mechanical strength. An all-solid-state battery made with an approximately 10-μm-thick film shows good cyclability at 60 °C and no dendrite formation. |
| Starting Page | 1 |
| Ending Page | 7 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1038/s41565-019-0465-3 |
| PubMed reference number | 31133663 |
| Journal | Medline |
| Alternate Webpage(s) | https://web.stanford.edu/group/cui_group/papers/Jiayu_Cui_NATNANO_2019.pdf |
| Alternate Webpage(s) | https://static-content.springer.com/esm/art:10.1038%2Fs41565-019-0465-3/MediaObjects/41565_2019_465_MOESM1_ESM.pdf |
| Alternate Webpage(s) | https://doi.org/10.1038/s41565-019-0465-3 |
| Journal | Nature Nanotechnology |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
