Conducting Polymer Paper-Based Cathodes for High-Areal-Capacity Lithium–Organic Batteries
2015 (English)In: Energy Technology, ISSN 2194-4296, Vol. 3, no 6, 563-569 p.Article in journal (Refereed) Published
Conducting polymers have been considered for use as cathode materials in rechargeable lithium-ion batteries (LIBs) since 1981 but problems with poor cycling stability, rapid self-discharge, and low energy and power densities have so far limited their applicability. Herein it is shown that nanostructured freestanding conducting polymer composites [e.g., polypyrrole (PPy) and polyaniline (PANI)] can be used to circumvent these shortcomings. Freestanding and binder-free PPy and cellulose-based composites can straightforwardly be used as versatile organic cathode materials for LIBs. The composite, reinforced with chopped carbon filaments (CCFs), exhibited a large active mass loading of approximately 10mgcm(-2), an areal capacity of 1.0mAhcm(-2) (corresponding to 102mAhg(-1)), and stable cycling. With an active mass loading of 4.4mgcm(-2), a capacity of 0.22mAhcm(-2) (corresponding to 58mAhg(-1)) was found for current densities of 5Ag(-1) yielding discharge times of approximately 40seconds, and a capacity retention of 91% over 100cycles was obtained at 0.2Ag(-1). The present method constitutes a straightforward approach for the manufacturing of high-performance freestanding electroactive conducting-polymer-based paper-like electrodes for use in inexpensive and sustainable, high-performance organic LIBs.
Place, publisher, year, edition, pages
2015. Vol. 3, no 6, 563-569 p.
conducting polymers, lithium-ion batteries, paper, polyaniline, polypyrrole
Research subject Engineering Science with specialization in Nanotechnology and Functional Materials
IdentifiersURN: urn:nbn:se:uu:diva-254607DOI: 10.1002/ente.201402224ISI: 000356082700003OAI: oai:DiVA.org:uu-254607DiVA: diva2:818991
FunderCarl Tryggers foundation