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Silicon-conductive nanopaper for Li-ion batteries
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
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2013 (English)In: Nano Energy, ISSN 2211-2855, Vol. 2, no 1, 138-145 p.Article in journal (Refereed) Published
Abstract [en]

There is an increasing interest in the development of thin, flexible energy storage devices for new applications. For large scale and low cost devices, structures with the use of earth abundant materials are attractive. In this study, we fabricated flexible and conductive nanopaper aerogels with incorporated carbon nanotubes (CNT). Such conductive nanopaper is made from aqueous dispersions with dispersed CNT and cellulose nanofibers. Such aerogels are highly porous with open channels that allow the deposition of a thin-layer of silicon through a plasma-enhanced CVD (PECVD) method. Meanwhile, the open channels also allow for an excellent ion accessibility to the surface of silicon. We demonstrated that such lightweight and flexible Si-conductive nanopaper structure performs well as Li-ion battery anodes. A stable capacity of 1200. mA. h/g for 100 cycles in half-cells is achieved. Such flexible anodes based on earth abundant materials and aqueous dispersions could potentially open new opportunities for low-cost energy devices, and potentially can be applied for large-scale energy storage.

Place, publisher, year, edition, pages
2013. Vol. 2, no 1, 138-145 p.
Keyword [en]
Aqueous ink, Cellulose fibrils, Conductive aerogel, Li-ion battery, Low cost, Silicon anode
National Category
Nano Technology
URN: urn:nbn:se:kth:diva-117800DOI: 10.1016/j.nanoen.2012.08.008ISI: 000318050500020ScopusID: 2-s2.0-84872261991OAI: diva2:603145
Knut and Alice Wallenberg Foundation

QC 20130205

Available from: 2013-02-05 Created: 2013-02-05 Last updated: 2013-06-05Bibliographically approved

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Eskilsson, MartinWågberg, Lars
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Fibre and Polymer TechnologyWallenberg Wood Science Center
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