Issue 15, 2013

Single-paper flexible Li-ion battery cells through a paper-making process based on nano-fibrillated cellulose

Abstract

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 μm, 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.

Graphical abstract: Single-paper flexible Li-ion battery cells through a paper-making process based on nano-fibrillated cellulose

Article information

Article type
Paper
Submitted
17 Dec 2012
Accepted
14 Feb 2013
First published
15 Feb 2013
This article is Open Access

J. Mater. Chem. A, 2013,1, 4671-4677

Single-paper flexible Li-ion battery cells through a paper-making process based on nano-fibrillated cellulose

S. Leijonmarck, A. Cornell, G. Lindbergh and L. Wågberg, J. Mater. Chem. A, 2013, 1, 4671 DOI: 10.1039/C3TA01532G

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