ZnFe2O4‐C/LiFePO4‐CNT: A Novel High‐Power Lithium‐Ion Battery with Excellent Cycling Performance. Issue 10 (24th March 2014)

• Record Type: Journal Article
• Authors: Varzi, Alberto; Bresser, Dominic; von Zamory, Jan; Müller, Franziska; Passerini, Stefano
• Is Part Of: Advanced energy materials. Volume 4:Issue 10(2014:Oct.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2014-03-24
• Subjects: Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201400054
• Languages: English
• ISSNs: 1614-6832

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>An innovative and environmentally friendly battery chemistry is proposed for high power applications. A carbon‐coated ZnFe₂O₄ nanoparticle‐based anode and a LiFePO₄‐multiwalled carbon nanotube‐based cathode, both aqueous processed with Na‐carboxymethyl cellulose, are combined, for the first time, in a Li‐ion full cell with exceptional electrochemical performance. Such novel battery shows remarkable rate capabilities, delivering 50% of its nominal capacity at currents corresponding to ≈20C (with respect to the limiting cathode). Furthermore, the pre‐lithiation of the negative electrode offers the possibility of tuning the cell potential and, therefore, achieving remarkable gravimetric energy and power density values of 202 Wh kg⁻¹ and 3.72 W kg⁻¹, respectively, in addition to grant a lithium reservoir. The high reversibility of the system enables sustaining more than 10 000 cycles at elevated C‐rates (≈10C with respect to the LiFePO₄ cathode), while retaining up to 85% of its initial capacity.</p> </abstract>