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- Title
Hierarchical Cellulose Superinsulation Membrane.
- Authors
Di Luigi, Massimigliano; Yu Fu; Zheng Li; Armstrong, Jason N.; Fei Yao; Shenqiang Ren
- Abstract
The environment-friendly components coupled with the ability to mimic the simplicity and originality of nature necessitate advanced sustainable materials with structural capabilities for energy-efficient applications. The use of feedstock deriving from plant-based, renewable organic material to produce nanofibril that embodies enhanced insulating properties and high mechanical strength constitutes an efficient development strategy. Herein, a free-standing, hierarchical superinsulation membrane by leveraging the principle of the bottom-up method is reported. The electrospun cellulose nanofibrils/aerogel-based core layer provides exceptional thermal properties with its thermal conductivity of 10.2mWm-1K-1. The lightweight, flexible, and durable paper-like membrane features a tensile strength of 11.3 MPa and a bending rigidity in the order of 4.6 cNmm-1. The hydrophobic superinsulation membrane material also exhibits a Δ T of ≈25 °C under continuous sunlight illumination and allows thermal runaway mitigation of rechargeable lithium-ion batteries. All the aforementioned properties position this hybrid superinsulation membrane as a promising material for energy-saving thermal management applications.
- Subjects
THERMAL properties; THERMAL conductivity; LITHIUM-ion batteries; TENSILE strength; CELLULOSE fibers; FEEDSTOCK; CELLULOSE
- Publication
Advanced Engineering Materials, 2023, Vol 25, Issue 16, p1
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.202300124