Single-paper flexible Li-ion battery cells through a paper-making process based on nano-fibrillated cellulose
2013 (English)In: Journal of Materials Chemistry, ISSN 0959-9428, E-ISSN 1364-5501, Vol. 1, no 15, 4671-4677 p.Article in journal (Refereed) Published
Recently, a need for mechanically flexible and strong batteries has arisen to power technical solutions such as active RFID tags and bendable reading devices. In this work, a method for making flexible and strong battery cells, integrated into a single flexible paper structure, is presented. Nano-fibrillated cellulose (NFC) is used both as electrode binder material and as separator material. The battery papers are made through a paper-making type process by sequential filtration of water dispersions containing the battery components. The resulting paper structure is thin, 250 mm, and strong with a strength at break of up to 5.6 MPa when soaked in battery electrolyte. The cycling performances are good with reversible capacities of 146 mA h g(-1) LiFePO4 at C/10 and 101 mA h g(-1) LiFePO4 at 1 C. This corresponds to an energy density of 188 mW h g(-1) of full paper battery at C/10.
Place, publisher, year, edition, pages
RSC Publishing, 2013. Vol. 1, no 15, 4671-4677 p.
Developmental Toxicity, Nanopaper Structures, N-Methyl-2-Pyrrolidone, Separators, Rats
IdentifiersURN: urn:nbn:se:kth:diva-120225DOI: 10.1039/C3TA01532GISI: 000316282800009ScopusID: 2-s2.0-84876516991OAI: oai:DiVA.org:kth-120225DiVA: diva2:613992
FunderKnut and Alice Wallenberg Foundation
QC 201304192013-04-032013-04-032013-05-07Bibliographically approved