Fast and stable lithium-ion storage kinetics of anatase titanium dioxide/carbon onion hybrid electrodes

Eunho Lim, Hwirim Shim, Simon Fleischmann, Volker Presser

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Research on alternatives to replace conventional graphite anodes is needed to advance lithium-ion battery technology. In this work, an anatase nano-TiO2/carbon onion hybrid material (nano-TiO2-C) is introduced as a rapid and stable lithium storage anode material, synthesized by a simple synthetic route using tailored sol-gel chemistry. The nano-TiO2-C hybrid material provides highly reversible capacity (166 mA h g-1 at 0.02 A g-1), promising rate capability (61 mA h g-1 at 5 A g-1), and long-term cycle stability (capacity retention: 94% at 1 A g-1 for 1000 cycles). We demonstrate that hybridization of nano-TiO2 with carbon onions improves the high rate performance significantly.

Original languageEnglish
Pages (from-to)9480-9488
Number of pages9
JournalJournal of Materials Chemistry A
Volume6
Issue number20
DOIs
StatePublished - 2018

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