NDLI: High-areal-capacity lithium storage of the Kirkendall effect-driven hollow hierarchical NiS<sub>x</sub> nanoarchitecture

Content Provider	Royal Society of Chemistry (RSC)
Author	Hong, Kug Sun Lee, Chan Woo Seo, Seung-Deok Song, Hee Jo Kim, Dong-Wan Park, Sangbaek Park, Hoon Kee
Copyright Year	2015
Abstract	Three-dimensional (3-D) architectures can provide significant advantages as lithium ion microbattery electrodes by lengthening the vertical dimension. In addition, the nanoscale hierarchy and hollow properties are important factors for enhancing the performance. Here, we prepared a 3-D nickel sulfide nanoarchitecture via a facile low-temperature solution route. A Kirkendall effect-driven sulfidation of a 3-D nickel electrode was used to produce a hollow 3-D structure. Moreover, a nanoscale hierarchy can be formed with the use of highly concentrated sulfur species. The morphology, structure, and chemical composition of the 3-D nickel sulfide electrode are characterized in detail, and the formation mechanism is discussed based on a time-resolved study. The 3-D nickel sulfide electrodes show an outstanding areal capacity (1.5 mA h cm−2 at a current rate of 0.5 mA cm−2), making this electrode a potential electrode for 3-D lithium ion microbatteries with a large energy density. Moreover, this strategy is expected to provide a general fabrication method for transition metal sulfide nanoarchitectures.
Starting Page	2790
Ending Page	2796
Page Count	7
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	7
Issue Number	6
Journal	Nanoscale
DOI	10.1039/c4nr05942e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Sulfide Kirkendall Electrode Ion Energy density Nickel Transition metal Sulfur Three-dimensional space
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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