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Issue 26, 2011
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Flexible solid state lithium batteries based on graphene inks

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Different formulations of solution-processable graphene have been characterised as electrode materials for use in electrochemical energy storage devices. Graphene was fabricated by chemical reduction of exfoliated graphene oxide (GO), and modified with either p-type (e.g. polyaniline) or n-type anionic groups (poly(styrenesulfonate) (PSS) and poly[2,5-bis(3-sulfonatopropoxy)-1,4-ethynylphenylene-alt-1,4-ethynylphenylene] sodium salt (PPE-SO3) anion). Solutions of these graphene compounds were deposited on charge collecting electrodes and used as battery cathodes. Electrodes using the anionically-modified graphene inks containing anatase titanate (TiO2) nanoparticles show improved performance over pristine graphene ink as well as the p-type conducting polymer modified ones. In addition, the open circuit voltage of batteries based on TiO2 has been boosted over 3 V with good cyclability when mixed with the graphene ink. Combined with a polymer electrolyte, this work suggests a feasible route towards fully printable rechargeable lithium batteries based on graphene inks. This approach is both versatile and scalable and is adaptable to a wide variety of applications.

Graphical abstract: Flexible solid state lithium batteries based on graphene inks

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Publication details

The article was received on 24 Feb 2011, accepted on 05 Apr 2011 and first published on 03 Jun 2011

Article type: Paper
DOI: 10.1039/C1JM10826C
J. Mater. Chem., 2011,21, 9762-9767

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    Flexible solid state lithium batteries based on graphene inks

    D. Wei, P. Andrew, H. Yang, Y. Jiang, F. Li, C. Shan, W. Ruan, D. Han, L. Niu, C. Bower, T. Ryhänen, M. Rouvala, G. A. J. Amaratunga and A. Ivaska, J. Mater. Chem., 2011, 21, 9762
    DOI: 10.1039/C1JM10826C

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