Authors
Jie Yang, Yueyue Xiao, Mingyuan Yan, Xu Huang, Longlong Li, Zhongxin Zhang, Xudong Cheng, Heping Zhang, Yuelei Pan
Published in
Nano-micro letters. Volume 18. Issue 1. Jul 21, 2026. Epub Jul 21, 2026.
Abstract
Electric-aircraft lithium-ion batteries, characterized by high-rate charge/discharge and high energy density, impose stringent thermal-safety requirements in confined compartments. However, conventional thermal-management or insulation strategies generally struggle to simultaneously enable efficient heat dissipation during routine operation and thermal runaway propagation (TRP) suppression under abuse conditions. Herein, a carbon aerogel-silica-alumina aerogel sheet-carbon aerogel dual-network aerogel (CA&SAAS) is fabricated through in-situ deposition and integrated supercritical drying and is further coupled with a cold plate (CP) to construct a battery thermal-safety management system (BTSMS). CA&SAAS exhibits a bulk density of 0.275 gcm⁻3 and a specific surface area of 626.37 m2g⁻1. The silica-alumina aerogel sheet (SAAS) core retains thermal conductivity of 0.0652 Wm⁻1K⁻1 at 1000 °C, while CA&SAAS exhibits a room-temperature thermal conductivity of 0.019 Wm⁻1K⁻1. During four 1C cycles, BTSMS limits Tmax/ΔTmax to 34.9/1.8 °C, reducing peak temperature and temperature nonuniformity by 46.5% and 56.1%, respectively. A predictive model shows optimized CP parameters constrain Tmax to around 45 °C at 3C. Thermal runaway tests conducted in the confined space of a full-scale aircraft cargo compartment demonstrate that the BTSMS effectively interrupts TRP in a confined three-cell module, providing a solution for the design of BTSMSs for electric-aircraft battery packs.
PMID:
42479268
Bibliographic data and abstract were imported from PubMed on 21 Jul 2026.
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