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Title: NiO-Microflower Formed by Nanowire-weaving Nanosheets with Interconnected Ni-network Decoration as Supercapacitor Electrode

Abstract

We propose a ‘weaving’ evolution mechanism, by systematically investigating the products obtained in controlled experiments, to demonstrate the formation of Ni-based ‘microflowers’ which consists of multiple characteristic dimensions, in which the three dimensional (3D) NiO ‘microflower’ is constructed by a two-dimensional (2D) nanosheet framework that is derived from weaving onedimensional (1D) nanowires. We found such unique nanostructures are conducive for the generation of an electrically conductive Ni-network on the nanosheet surface after being exposed to a reducing atmosphere. Our study offers a promising strategy to address the intrinsic issue of poor electrical conductivity for NiO-based materials with significant enhancement of utilization of NiO active materials, leading to a remarkable improvement in the performance of the Ni-NiO microflower based supercapacitor. The optimized Ni-NiO microflower material showed a mass specific capacitance of 1,828F g–1 , and an energy density of 15.9Wh kg–1 at a current density of 0.5A g–1 . This research not only contributes to understanding the formation mechanism of such ‘microflower’ structures but also offers a promising route to advance NiO based supercapacitor given their ease of synthesis, low cost, and long-term stability.

Authors:
 [1];  [1];  [2];  [2];  [2];  [2]
  1. Univ. of Wisconsin, Milwaukee, WI (United States); Nanchang Hangkong Univ. (China)
  2. Univ. of Wisconsin, Milwaukee, WI (United States)
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1624780
Grant/Contract Number:  
EE0003208
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; Science & Technology - Other Topics; Electrochemistry; Synthesis and Processing

Citation Formats

Ci, Suqing, Wen, Zhenhai, Qian, Yuanyuan, Mao, Shun, Cui, Shumao, and Chen, Junhong. NiO-Microflower Formed by Nanowire-weaving Nanosheets with Interconnected Ni-network Decoration as Supercapacitor Electrode. United States: N. p., 2015. Web. doi:10.1038/srep11919.
Ci, Suqing, Wen, Zhenhai, Qian, Yuanyuan, Mao, Shun, Cui, Shumao, & Chen, Junhong. NiO-Microflower Formed by Nanowire-weaving Nanosheets with Interconnected Ni-network Decoration as Supercapacitor Electrode. United States. https://doi.org/10.1038/srep11919
Ci, Suqing, Wen, Zhenhai, Qian, Yuanyuan, Mao, Shun, Cui, Shumao, and Chen, Junhong. Mon . "NiO-Microflower Formed by Nanowire-weaving Nanosheets with Interconnected Ni-network Decoration as Supercapacitor Electrode". United States. https://doi.org/10.1038/srep11919. https://www.osti.gov/servlets/purl/1624780.
@article{osti_1624780,
title = {NiO-Microflower Formed by Nanowire-weaving Nanosheets with Interconnected Ni-network Decoration as Supercapacitor Electrode},
author = {Ci, Suqing and Wen, Zhenhai and Qian, Yuanyuan and Mao, Shun and Cui, Shumao and Chen, Junhong},
abstractNote = {We propose a ‘weaving’ evolution mechanism, by systematically investigating the products obtained in controlled experiments, to demonstrate the formation of Ni-based ‘microflowers’ which consists of multiple characteristic dimensions, in which the three dimensional (3D) NiO ‘microflower’ is constructed by a two-dimensional (2D) nanosheet framework that is derived from weaving onedimensional (1D) nanowires. We found such unique nanostructures are conducive for the generation of an electrically conductive Ni-network on the nanosheet surface after being exposed to a reducing atmosphere. Our study offers a promising strategy to address the intrinsic issue of poor electrical conductivity for NiO-based materials with significant enhancement of utilization of NiO active materials, leading to a remarkable improvement in the performance of the Ni-NiO microflower based supercapacitor. The optimized Ni-NiO microflower material showed a mass specific capacitance of 1,828F g–1 , and an energy density of 15.9Wh kg–1 at a current density of 0.5A g–1 . This research not only contributes to understanding the formation mechanism of such ‘microflower’ structures but also offers a promising route to advance NiO based supercapacitor given their ease of synthesis, low cost, and long-term stability.},
doi = {10.1038/srep11919},
journal = {Scientific Reports},
number = 1,
volume = 5,
place = {United States},
year = {Mon Jul 13 00:00:00 EDT 2015},
month = {Mon Jul 13 00:00:00 EDT 2015}
}

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Cited by: 79 works
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Figures / Tables:

Figure 1 Figure 1: Schematic of the as-designed Ni-NiO microflower used for a supercapacitor.

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