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http://hdl.handle.net/10397/96616
Title: | A highly ionic conductive succinonitrile-based composite solid electrolyte for lithium metal batteries | Authors: | Qiu, GR Shi, YP Huang, B |
Issue Date: | Jun-2022 | Source: | Nano research, June 2022, v. 15, no. 6, p. 5153-5160 | Abstract: | Solid-state Li metal batteries with solid electrolytes have built a potential way to solve the safety and low energy density problems of current commercial Li-ion batteries with liquid electrolyte. As a key component of solid-state Li metal batteries, solid electrolytes require high ionic conductivities and good mechanical properties. We have designed a composite solid electrolyte (CSE) consisting of poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP)-Li6.5La3Zr1.5Ta0.5O12 (LLZTO)-succinonitrile (SN) and Li bis(trifluoromethylsulphonyl)imide (LiTFSI). The PVDF-HFP-based porous matrix made by electrospinning ensures good mechanical properties of the electrolyte membrane, and the large proportion of SN filling material makes the electrolyte membrane have an ionic conductivity of 1.11 mS·cm−1 without the addition of liquid electrolyte. The symmetric battery assembled with CSE can be cycled stably for more than 600 h, and the LiFePO4∣CSE∣Li full battery can also be cycled stably for more than 200 cycles. In addition to Li metal batteries, Li-O2 and Li-CO2 batteries that use CSE as electrolytes also have good performances, reflecting the universality of CSE. CSE does not only guarantee good mechanical properties but also obtain a high ionic conductivity. This design provides a new idea for the commercial application of polymer-based solid batteries. | Keywords: | Li metal batteries Composite solid-state electrolyte Succinonitrile Ionic conductivity Mechanical strength |
Publisher: | Tsinghua University Press | Journal: | Nano research | ISSN: | 1998-0124 | EISSN: | 1998-0000 | DOI: | 10.1007/s12274-022-4183-z | Rights: | © Tsinghua University Press 2022 Posted with permission of the publisher. The following publication Qiu, G., Shi, Y. & Huang, B. A highly ionic conductive succinonitrile-based composite solid electrolyte for lithium metal batteries. Nano Res. 15, 5153–5160 (2022) is available at https://dx.doi.org/10.1007/s12274-022-4183-z. |
Appears in Collections: | Journal/Magazine Article |
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Qiu_Conductive_Succinonitrile-based_Composite.pdf | 1.85 MB | Adobe PDF | View/Open |
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