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A bacterial cellulose-based separator with tunable pore size for lithium-ion batteries.
- Source :
-
Carbohydrate polymers [Carbohydr Polym] 2023 Mar 15; Vol. 304, pp. 120489. Date of Electronic Publication: 2022 Dec 23. - Publication Year :
- 2023
-
Abstract
- Bacterial cellulose (BC) lithium-ion batteries separators possess outstanding thermal dimensional stability and electrolyte wettability, but theirs nano diameter and high aspect ratio lead to poor porosity and pore size uniformity of dense BC separators, limiting the Li <superscript>+</superscript> transmission in the separators. In this paper, chitosan (CS) with different molecular weight was grafted onto BC (named OBCS), and a high-performance OBCS separator with excellent pore structure and tunable pore size was prepared by simple suction filtration. The spacing and dispersion uniformity of OBCS were improved by the CS grafted on BC surface, thus improving the pore structure and porosity of OBCS separators. The results showed that the obtained OBCS separators not only have excellent physicochemical properties, but also exhibit higher electrochemical performances than the commercial polypropylene (PP) separator. This work provides a new feasible strategy for improving the pore structure and porosity of nanocellulose separators.<br />Competing Interests: Declaration of competing interest There are no conflicts of interest to declare in this paper.<br /> (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Subjects :
- Ions
Cellulose
Electric Power Supplies
Lithium
Chitosan
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1344
- Volume :
- 304
- Database :
- MEDLINE
- Journal :
- Carbohydrate polymers
- Publication Type :
- Academic Journal
- Accession number :
- 36641193
- Full Text :
- https://doi.org/10.1016/j.carbpol.2022.120489