Issue 33, 2015

Facile synthesis of rutile TiO2 mesocrystals with enhanced sodium storage properties

Abstract

With the aim of developing high performance anode (negative) materials for sodium ion batteries (NIBs), rutile TiO2 with mesocrystalline structure were designed and used for enhancing the discharge capacity and reaction kinetics. The nanoporous rutile TiO2 mesocrystals constructed by crystallographically oriented nanoparticle subunits with tunable microstructures were successfully prepared via a facile synthesis route. Such rutile TiO2 architecture possesses a large surface area (157 m2 g−1), nanoporous nature and single-crystal-like structure, which could provide a high level of accessibility for the electrolyte and more active sites, and allow the fast electron and ion transport compared with the irregularly oriented nanoparticles. When evaluated as an anode material for sodium-ion storage, this unique architecture exhibited a high reversible capacity over 350 mA h g−1 at 50 mA g−1, superior rate capability with a stable capacity of 151 mA h g−1 at 2 A g−1 and good cycling stability.

Graphical abstract: Facile synthesis of rutile TiO2 mesocrystals with enhanced sodium storage properties

Supplementary files

Article information

Article type
Paper
Submitted
11 Jun 2015
Accepted
27 Jul 2015
First published
27 Jul 2015

J. Mater. Chem. A, 2015,3, 17412-17416

Facile synthesis of rutile TiO2 mesocrystals with enhanced sodium storage properties

Z. Hong, K. Zhou, J. Zhang, Z. Huang and M. Wei, J. Mater. Chem. A, 2015, 3, 17412 DOI: 10.1039/C5TA04232A

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