Spongy structured α-Ni(OH)^sub 2^: Facile and rapid synthesis for supercapattery applications

Spongy-like α-Ni(OH)2 was rapidly prepared through microwave irradiation method. The spongy structure was identified to be of interspersed nanorods (2.5 nm thickness). Moreover, its mesoporus nature has made the α-Ni(OH)2 as an efficient electrode by revealing a specific capacity of 439 C g−1 at a s...

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Bibliographic Details
Published in:Materials letters 2019-03, Vol.238, p.35
Main Authors: William, J Johnson, Babu, I Manohara, Muralidharan, G
Format: Article
Language:English
Subjects:
Activated carbon
Materials science
Nanorods
Nickel compounds
Polyurethane foam
Separators
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Summary:Spongy-like α-Ni(OH)2 was rapidly prepared through microwave irradiation method. The spongy structure was identified to be of interspersed nanorods (2.5 nm thickness). Moreover, its mesoporus nature has made the α-Ni(OH)2 as an efficient electrode by revealing a specific capacity of 439 C g−1 at a specific current of 2 A g−1. Further, the α-Ni(OH)2//AC (activated carbon) supercapattery cell has been fabricated using polyurethane foam as separator. A specific capacitance of 246 F g−1 (2 A g−1) was estimated with the specific energy of 49 W h kg−1 and specific power of 696 W kg−1. The studied supercapattery cell could retain 87 % of capacity even after 2000 continuous charge-discharge cycles.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2018.11.136