Water-enabled crystallization of mesoporous SnO2 as a binder-free electrode for enhanced sodium storage

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)23967-23975
Journal / PublicationJournal of Materials Chemistry A
Volume5
Issue number45
Online published23 Oct 2017
Publication statusPublished - 7 Dec 2017

Abstract

Water-enabled crystallization of amorphous anodic SnO2 is reported. After low-temperature water soaking for a short period of time (e.g., 60 °C for 2 h), mesoporous rutile SnO2 with a remarkably increased surface area is achieved (nearly 2-fold that of the as-anodized SnO2 and 3.3 times that of SnO2 annealed at high temperature). Closer examination reveals that the water-crystallized SnO2 possesses a hierarchical nanostructure that features 1D nanochannels (e.g., ∼30 nm in diameter) and thin channel walls (e.g., 20 nm thick) that are comprised of tiny nanoparticles (e.g., ∼4 nm big). The water-crystallized SnO2 directly grown on the copper foil can be directly applied as a novel type of binder-free electrode for sodium-ion storage, delivering a high reversible capacity of 514 mA h g-1 after 100 cycles at a current rate of 0.1C.

Citation Format(s)

Water-enabled crystallization of mesoporous SnO2 as a binder-free electrode for enhanced sodium storage. / Bian, Haidong; Dong, Ranran; Shao, Qingguo; Wang, Shuo; Yuen, Muk-Fung; Zhang, Zhenyu; Yu, Denis Y. W.; Zhang, Wenjun; Lu, Jian; Li, Yang Yang.

In: Journal of Materials Chemistry A, Vol. 5, No. 45, 07.12.2017, p. 23967-23975.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review