Electrochemically synthesized large area network of CoxNiyAlz layered triple hydroxides nanosheets: A high performance supercapacitor

Vinay Gupta; Shubhra Gupta; Norio Miura

doi:10.1016/j.jpowsour.2009.01.026

Electrochemically synthesized large area network of Co_xNi_yAl_z layered triple hydroxides nanosheets: A high performance supercapacitor

Vinay Gupta
, Shubhra Gupta
, Norio Miura

Physics

Kyushu University

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

A network of Co_xNi_yAl_z layered triple hydroxides (LTHs) nanosheets was prepared by the potentiostatic deposition process at -1.0 V (vs. Ag/AgCl) onto stainless steel electrodes. X-ray diffraction patterns show that the Co_xNi_yAl_zLTHs belong to the hexagonal system with layered structure. Cyclic voltammetry and charge discharge measurements in the potential range of -0.1 to 0.5 V and 0.0-0.4 V, respectively, vs. Ag/AgCl in 1 M KOH electrolyte indicate that Co_xNi_yAl_zLTHs have excellent supercapacitive characteristics. The maximum specific capacitance of ∼1263 F g^-1 was obtained for Co_0.59Ni_0.21Al_0.20LTH. The impedance studies indicated highly conducting nature of the Co_xNi_yAl_zLTHs.

Original language	British English
Pages (from-to)	1292-1295
Number of pages	4
Journal	Journal of Power Sources
Volume	189
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2009.01.026
State	Published - 15 Apr 2009

Keywords

CoNiAl
Layered triple hydroxides
Potentiostatic deposition
Specific capacitance
Supercapacitor

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@article{f9d1295959cd48468d06d8a17b902a1e,

title = "Electrochemically synthesized large area network of CoxNiyAlz layered triple hydroxides nanosheets: A high performance supercapacitor",

abstract = "A network of CoxNiyAlz layered triple hydroxides (LTHs) nanosheets was prepared by the potentiostatic deposition process at -1.0 V (vs. Ag/AgCl) onto stainless steel electrodes. X-ray diffraction patterns show that the CoxNiyAlzLTHs belong to the hexagonal system with layered structure. Cyclic voltammetry and charge discharge measurements in the potential range of -0.1 to 0.5 V and 0.0-0.4 V, respectively, vs. Ag/AgCl in 1 M KOH electrolyte indicate that CoxNiyAlzLTHs have excellent supercapacitive characteristics. The maximum specific capacitance of ∼1263 F g-1 was obtained for Co0.59Ni0.21Al0.20LTH. The impedance studies indicated highly conducting nature of the CoxNiyAlzLTHs.",

keywords = "CoNiAl, Layered triple hydroxides, Potentiostatic deposition, Specific capacitance, Supercapacitor",

author = "Vinay Gupta and Shubhra Gupta and Norio Miura",

note = "Funding Information: The present work was supported by the Japan Science and Technology (JST) Agency through the Core Research for Evolutionary Science and Technology (CREST) program under the project “Development of advanced nanostructured materials for energy conversion and storage”.",

year = "2009",

month = apr,

day = "15",

doi = "10.1016/j.jpowsour.2009.01.026",

language = "British English",

volume = "189",

pages = "1292--1295",

journal = "Journal of Power Sources",

issn = "0378-7753",

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TY - JOUR

T1 - Electrochemically synthesized large area network of CoxNiyAlz layered triple hydroxides nanosheets

T2 - A high performance supercapacitor

AU - Gupta, Vinay

AU - Gupta, Shubhra

AU - Miura, Norio

N1 - Funding Information: The present work was supported by the Japan Science and Technology (JST) Agency through the Core Research for Evolutionary Science and Technology (CREST) program under the project “Development of advanced nanostructured materials for energy conversion and storage”.

PY - 2009/4/15

Y1 - 2009/4/15

N2 - A network of CoxNiyAlz layered triple hydroxides (LTHs) nanosheets was prepared by the potentiostatic deposition process at -1.0 V (vs. Ag/AgCl) onto stainless steel electrodes. X-ray diffraction patterns show that the CoxNiyAlzLTHs belong to the hexagonal system with layered structure. Cyclic voltammetry and charge discharge measurements in the potential range of -0.1 to 0.5 V and 0.0-0.4 V, respectively, vs. Ag/AgCl in 1 M KOH electrolyte indicate that CoxNiyAlzLTHs have excellent supercapacitive characteristics. The maximum specific capacitance of ∼1263 F g-1 was obtained for Co0.59Ni0.21Al0.20LTH. The impedance studies indicated highly conducting nature of the CoxNiyAlzLTHs.

AB - A network of CoxNiyAlz layered triple hydroxides (LTHs) nanosheets was prepared by the potentiostatic deposition process at -1.0 V (vs. Ag/AgCl) onto stainless steel electrodes. X-ray diffraction patterns show that the CoxNiyAlzLTHs belong to the hexagonal system with layered structure. Cyclic voltammetry and charge discharge measurements in the potential range of -0.1 to 0.5 V and 0.0-0.4 V, respectively, vs. Ag/AgCl in 1 M KOH electrolyte indicate that CoxNiyAlzLTHs have excellent supercapacitive characteristics. The maximum specific capacitance of ∼1263 F g-1 was obtained for Co0.59Ni0.21Al0.20LTH. The impedance studies indicated highly conducting nature of the CoxNiyAlzLTHs.

KW - CoNiAl

KW - Layered triple hydroxides

KW - Potentiostatic deposition

KW - Specific capacitance

KW - Supercapacitor

UR - https://www.scopus.com/pages/publications/62649155157

U2 - 10.1016/j.jpowsour.2009.01.026

DO - 10.1016/j.jpowsour.2009.01.026

M3 - Article

AN - SCOPUS:62649155157

SN - 0378-7753

VL - 189

SP - 1292

EP - 1295

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -