NDLI: Three-dimensional tubular arrays of MnO<sub>2</sub>–NiO nanoflakes with high areal pseudocapacitance

Content Provider	Royal Society of Chemistry (RSC)
Author	Liu, Jinping Fan, Hong Jin Jiang, Jian Bosman, Michel
Copyright Year	2012
Abstract	Transition metal oxide nanostructures are current research focus for energy storage applications. We herein report the synthesis of MnO2–NiO nanoflake-assembled tubular array on stainless steel substrate to function as pseudocapacitor electrode by programmed three-dimensional (3D) interfacial reactions, in which the ZnO nanowire array is employed as the low-cost in situ sacrificial template. In this 3D nanoelectrode, MnO2 and NiO nanoflakes share the same “root” and form an integrated hierarchical structure, which adheres robustly to the substrate. Importantly, both MnO2 and NiO contribute to the charge storage. The highly porous structure, which allows easy penetration of the electrolyte, gives additional merits. Detailed electrochemical characterization reveals that the assembled MnO2–NiO array exhibits good rate performance and cycle life. In particular, it displays an areal capacitance that is four orders of magnitude higher than that of carbonaceous materials and significantly superior to those of previous directly-grown pseudocapacitive nanostructure films.
Starting Page	2419
Ending Page	2426
Page Count	8
File Format	HTM / HTML PDF
ISSN	09599428
Volume Number	22
Issue Number	6
Journal	Journal of Materials Chemistry
DOI	10.1039/c1jm14804d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Transition metal Stainless steel Electrode Three-dimensional space Nanowire Nanoelectrochemistry Electrolyte Electrochemistry Capacitance Nanostructure
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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