A safe and sustainable bacterial cellulose nanofiber separator for lithium rechargeable batteries

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<jats:p>Bacterial cellulose nanofiber (BCNF) with high thermal stability produced by an ecofriendly process has emerged as a promising solution to realize safe and sustainable materials in the large-scale battery. However, an understanding of the actual thermal behavior of the BCNF in the full-cell battery has been lacking, and the yield is still limited for commercialization. Here, we report the entire process of BCNF production and battery manufacture. We systematically constructed a strain with the highest yield (31.5%) by increasing metabolic flux and improved safety by introducing a Lewis base to overcome thermochemical degradation in the battery. This report will open ways of exploiting the BCNF as a “single-layer” separator, a good alternative to the existing chemical-derived one, and thus can greatly contribute to solving the environmental and safety issues.</jats:p>
Publisher
NATL ACAD SCIENCES
Issue Date
2019-09
Language
English
Article Type
Article
Citation

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.116, no.39, pp.19288 - 19293

ISSN
0027-8424
DOI
10.1073/pnas.1905527116
URI
http://hdl.handle.net/10203/267940
Appears in Collection
CBE-Journal Papers(저널논문)
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