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Synthesis of Li2Ni2(MoO4)3 as a high-performance positive electrode for asymmetric supercapacitors
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Du, Dongwei, Lan, Rong, Xie, Kui, Wang, Huanting and Tao, Shanwen (2017) Synthesis of Li2Ni2(MoO4)3 as a high-performance positive electrode for asymmetric supercapacitors. RSC Advances , 7 (22). pp. 13304-13311. doi:10.1039/c6ra28580e ISSN 2046-2069.
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Official URL: http://dx.doi.org/10.1039/c6ra28580e
Abstract
A NASICON-type compound, Li2Ni2(MoO4)3 was successfully synthesized via a combustion method. The as-synthesized Li2Ni2(MoO4)3 is fiber-like grains with an average length of 1–2 μm. As an electrode for pseudocapacitors, in 2 M LiOH, its specific capacitance reached 1137 F g−1 and 717 F g−1 at current density of 1 A g−1 and 20 A g−1 respectively, exhibiting 63% capacity retention. Moreover, in asymmetric supercapacitors with an activated carbon electrode as the negative electrode, the energy density of 36.5 W h kg−1 was obtained at the average power density of 420 W kg−1. The fabricated asymmetric supercapacitor also exhibited good electrochemical stability, specifically, the specific capacitance was retained at 68% of the initial value even after 10 000 cycles at 2 A g−1. These observations suggest that the prepared Li2Ni2(MoO4)3 is a prospective candidate for high-performance supercapacitors.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Supercapacitors, Absorption, Electrodes, Electrolytes | ||||||||
Journal or Publication Title: | RSC Advances | ||||||||
Publisher: | Royal Society of Chemistry | ||||||||
ISSN: | 2046-2069 | ||||||||
Official Date: | 27 February 2017 | ||||||||
Dates: |
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Volume: | 7 | ||||||||
Number: | 22 | ||||||||
Page Range: | pp. 13304-13311 | ||||||||
DOI: | 10.1039/c6ra28580e | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 7 March 2017 | ||||||||
Date of first compliant Open Access: | 7 March 2017 | ||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Warwick | ||||||||
Grant number: | EP/K021036/2 |
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