6533b82efe1ef96bd12925ba

RESEARCH PRODUCT

Stabilizing nanostructured lithium insertion materials via organic hybridization: A step forward towards high-power batteries

Dominic BresserWolfgang TremelBernd OschmannRudolf ZentelStefano PasseriniMuhammed Nawaz Tahir

subject

AnataseMaterials scienceRenewable Energy Sustainability and the EnvironmentInorganic chemistryEnergy Engineering and Power Technologychemistry.chemical_elementChain transferElectrochemistryPolymerizationchemistryCopolymerReversible addition−fragmentation chain-transfer polymerizationLithiumNanorodElectrical and Electronic EngineeringPhysical and Theoretical Chemistry

description

Abstract Herein, we present the electrochemical characterization of carbon-coated TiO 2 nanorods, obtained by carbonizing RAFT (reversible addition fragmentation chain transfer) polymerization derived block copolymers anchored on anatase TiO 2 nanorods. These carbon-coated TiO 2 nanorods show an improved electrochemical performance in terms of first cycle reversibility, specific capacity, cycling stability, and high rate capability. More importantly, however, the structural disordering observed in the uncoated TiO 2 nanorods by means of galvanostatic and potentiodynamic cycling as well as ex situ XRD analysis, does not occur for the carbon-coated material. Preventing this structural disordering does not only result in a stabilized cycling performance but, moreover, in substantially enhanced energy storage efficiency (86% vs. only 68% at the 100th cycle) due to the preserved characteristic potential profile of anatase TiO 2 .

yearjournalcountryeditionlanguage
2014-02-01Journal of Power Sources
https://doi.org/10.1016/j.jpowsour.2013.10.013