Direct growth of 2D nickel hydroxide nanosheets intercalated with polyoxovanadate anions as a binder-free supercapacitor electrode.

Content Provider	Semantic Scholar
Author	Gunjakar, Jayavant L. Inamdar, Akbar I. Hou, Bo Wen Cha, Seung Nam Pawar, Sambhaji M. Talha, A. A. Abu Chavan, Harish S. Kim, Jongmin Cho, Sangeun Sarah Lee, Seongwoo Jo, Yongcheol Kim, Hyungsang Im, Hyunsik
Copyright Year	2018
Abstract	A mesoporous nanoplate network of two-dimensional (2D) layered nickel hydroxide Ni(OH)2 intercalated with polyoxovanadate anions (Ni(OH)2-POV) was built using a chemical solution deposition method. This approach will provide high flexibility for controlling the chemical composition and the pore structure of the resulting Ni(OH)2-POV nanohybrids. The layer-by-layer ordered growth of the Ni(OH)2-POV is demonstrated by powder X-ray diffraction and cross-sectional high-resolution transmission electron microscopy. The random growth of the intercalated Ni(OH)2-POV nanohybrids leads to the formation of an interconnected network morphology with a highly porous stacking structure whose porosity is controlled by changing the ratio of Ni(OH)2 and POV. The lateral size and thickness of the Ni(OH)2-POV nanoplates are ∼400 nm and from ∼5 nm to 7 nm, respectively. The obtained thin films are highly active electrochemical capacitor electrodes with a maximum specific capacity of 1440 F g-1 at a current density of 1 A g-1, and they withstand up to 2000 cycles with a capacity retention of 85%. The superior electrochemical performance of the Ni(OH)2-POV nanohybrids is attributed to the expanded mesoporous surface area and the intercalation of the POV anions. The experimental findings highlight the outstanding electrochemical functionality of the 2D Ni(OH)2-POV nanoplate network that will provide a facile route for the synthesis of low-dimensional hybrid nanomaterials for a highly active supercapacitor electrode.
Starting Page	8953
Ending Page	8961
Page Count	9
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.rsc.org/suppdata/c7/nr/c7nr09626g/c7nr09626g1.pdf
PubMed reference number	29634061v1
Alternate Webpage(s)	https://doi.org/10.1039/c7nr09626g
DOI	10.1039/c7nr09626g
Journal	Nanoscale
Volume Number	10
Issue Number	19
Language	English
Access Restriction	Open
Subject Keyword	Anions Binder, device Capacitor Device Component Hydroxide Ion Nanostructured Materials Transmission Electron Microscopy anatomical layer electrode nickel hydroxide (II)
Content Type	Text
Resource Type	Article