期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 116, 期 39, 页码 19288-19293出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1905527116
关键词
bacterial cellulose; lithium batteries; cellulose separator; gene engineering
资金
- Samsung Electronics Co., Ltd.
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.
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