Bailmare, Deepa B. and Deshmukh, Kavita A. and Sivaraman, P. and Peshwe, D. R. and Gupta, Bipin Kumar and Dhoble, S. J. and Deshmukh, Abhay D. (2019) Directly grown Sr-Co layered double hydroxide (LDH) entangled two dimensional nanosheet film with superior performances. Electrochimica Acta, 328. pp. 135063-135069. ISSN 0013-4686

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Abstract

Designing of electrode with electrochemically rich structure, outstanding mechanical robustness and high electrical conductivity remains a challenge. We report a design of entangled Sr-Co Layered double hydroxides (LDHs) two-dimensional structure for such electrode. The hierarchical electrode with entangled nanosheet exhibit high specific capacitance of 1415 F g(-1) at 5 A g(-1) current density, excellent rate capability, high energy (12.28Whkg(-1)) and power density (567.788 W kg(-1)) and outstanding stability (80% capacity retention over 5000 cycles). The asymmetric device cell of Sr-Co LDH/ACC gives high energy density (27.78 Whkg-1) and power density (499.96Wkg-1) with cyclic performance of 1000 cycles with 95.24% capacitance retention. Further, we provide a detailed analysis of the various electrolyte environment experienced by the electrode and their effect on electrochemical properties. We pick out three different electrolytes; LiOH, NaOH, KOH and show that both selected electrolyte and metal combination for LDHs paves the way for outstanding electrochemical performance.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Electrochemistry
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	14 Feb 2020 07:19
Last Modified:	14 Feb 2020 07:19
URI:	http://npl.csircentral.net/id/eprint/4155

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