| Title: |
A flexible high-temperature insulating high entropy ceramic fiber membrane for thermal runaway protection in lithium-ion batteries. |
| Authors: |
Ma, Wenyuan; Li, Chengjun; Li, Junwei; Li, You; Xiong, Tianshun; Li, Xin; Jiang, Qinghui; Liang, Qinghua; Luo, Yubo; Yang, Junyou |
| Source: |
Journal of Materials Chemistry A; 7/28/2025, Vol. 13 Issue 28, p22461-22469, 9p |
| Abstract: |
High-temperature-resistant ceramic fibers are critical materials in emerging applications, including thermal protection for spacecraft, heat exchange systems in petroleum pipelines, thermal insulation in construction, and thermal runaway protection in lithium-ion batteries. However, the brittle failure of oxidized ceramic fibers often leads to structural degradation, limiting their long-term performance at high temperatures. In this study, we present the design of a flexible and durable high-entropy lanthanum zirconate-based silica composite nanofiber membrane, specifically developed for high-temperature thermal protection in lithium-ion batteries. The resultant (La0.2Ce0.2Gd0.2Er0.2Sm0.2)2Zr2O7–SiO2 membrane exhibits an ultra-low thermal conductivity of 0.036 W m−1 K−1 at room temperature and retains good flexibility under 1200 °C. This ceramic membrane also demonstrates exceptional high-temperature insulation performance, with a cold surface temperature of only 332 °C when the hot surface is maintained at 1200 °C, at a thickness of 10 mm. Additionally, the high-entropy ceramic membrane is shown to effectively prevent heat propagation thus secondary explosions in lithium-ion batteries during thermal runaway. This work provides new insight into the rational design of advanced thermal runaway protection for lithium-ion batteries under high temperatures. [ABSTRACT FROM AUTHOR] |
| : |
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| Database: |
Complementary Index |