1. A safe and sustainable bacterial cellulose nanofiber separator for lithium rechargeable batteries.
- Author
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Gwon H, Park K, Chung SC, Kim RH, Kang JK, Ji SM, Kim NJ, Lee S, Ku JH, Do EC, Park S, Kim M, Shim WY, Rhee HS, Kim JY, Kim J, Kim TY, Yamaguchi Y, Iwamuro R, Saito S, Kim G, Jung IS, Park H, Lee C, Lee S, Jeon WS, Jang WD, Kim HU, Lee SY, Im D, Doo SG, Lee SY, Lee HC, and Park JH
- Abstract
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., Competing Interests: The authors declare no conflict of interest.
- Published
- 2019
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