Exfoliated nickel hydroxide nanosheets for urea electrolysis

Dan Wang; Wei Yan; Gerardine G. Botte

doi:10.1016/j.elecom.2011.07.016

Exfoliated nickel hydroxide nanosheets for urea electrolysis

Dan Wang, Wei Yan, Gerardine G. Botte

Chemical Engineering

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

128 Scopus citations

Abstract

Two-dimensional nickel hydroxide nanosheets were synthesized by exfoliating surfactant intercalated layered nickel hydroxides and developed as electrocatalysts for urea electro-oxidation. The electro-oxidation of urea on Ni(OH)₂ nanosheet modified electrodes shows a decrease of 100 mV in overpotential and an enhancement in current density, which reaches ca.154 mA cm^{- 2} mg^{- 1}, by a factor of ca. 170 compared to bulk Ni(OH)₂ powder modified electrodes. The Ni(OH)₂ nanosheets have promising applications in urea-rich wastewater remediation, hydrogen production, electrochemical sensors, and fuel cells due to their ability to promote the urea electrolysis reaction.

Original language	English
Pages (from-to)	1135-1138
Number of pages	4
Journal	Electrochemistry Communications
Volume	13
Issue number	10
DOIs	https://doi.org/10.1016/j.elecom.2011.07.016
State	Published - Oct 2011

Keywords

Electrocatalysts
Hydrogen production
Nickel hydroxide nanosheets
Urea electrolysis

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title = "Exfoliated nickel hydroxide nanosheets for urea electrolysis",

abstract = "Two-dimensional nickel hydroxide nanosheets were synthesized by exfoliating surfactant intercalated layered nickel hydroxides and developed as electrocatalysts for urea electro-oxidation. The electro-oxidation of urea on Ni(OH)2 nanosheet modified electrodes shows a decrease of 100 mV in overpotential and an enhancement in current density, which reaches ca.154 mA cm- 2 mg- 1, by a factor of ca. 170 compared to bulk Ni(OH)2 powder modified electrodes. The Ni(OH)2 nanosheets have promising applications in urea-rich wastewater remediation, hydrogen production, electrochemical sensors, and fuel cells due to their ability to promote the urea electrolysis reaction.",

keywords = "Electrocatalysts, Hydrogen production, Nickel hydroxide nanosheets, Urea electrolysis",

author = "Dan Wang and Wei Yan and Botte, {Gerardine G.}",

note = "Funding Information: The authors would like to thank the financial support of the Center for Electrochemical Engineering Research at Ohio University , and the Department of Defense through the U.S. Army Construction Engineering Research Laboratory ( W9132T-09-1-0001 ). The content of the information does not reflect the position or the policy of the U.S. government.",

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T1 - Exfoliated nickel hydroxide nanosheets for urea electrolysis

AU - Wang, Dan

AU - Yan, Wei

AU - Botte, Gerardine G.

N1 - Funding Information: The authors would like to thank the financial support of the Center for Electrochemical Engineering Research at Ohio University , and the Department of Defense through the U.S. Army Construction Engineering Research Laboratory ( W9132T-09-1-0001 ). The content of the information does not reflect the position or the policy of the U.S. government.

PY - 2011/10

Y1 - 2011/10

N2 - Two-dimensional nickel hydroxide nanosheets were synthesized by exfoliating surfactant intercalated layered nickel hydroxides and developed as electrocatalysts for urea electro-oxidation. The electro-oxidation of urea on Ni(OH)2 nanosheet modified electrodes shows a decrease of 100 mV in overpotential and an enhancement in current density, which reaches ca.154 mA cm- 2 mg- 1, by a factor of ca. 170 compared to bulk Ni(OH)2 powder modified electrodes. The Ni(OH)2 nanosheets have promising applications in urea-rich wastewater remediation, hydrogen production, electrochemical sensors, and fuel cells due to their ability to promote the urea electrolysis reaction.

AB - Two-dimensional nickel hydroxide nanosheets were synthesized by exfoliating surfactant intercalated layered nickel hydroxides and developed as electrocatalysts for urea electro-oxidation. The electro-oxidation of urea on Ni(OH)2 nanosheet modified electrodes shows a decrease of 100 mV in overpotential and an enhancement in current density, which reaches ca.154 mA cm- 2 mg- 1, by a factor of ca. 170 compared to bulk Ni(OH)2 powder modified electrodes. The Ni(OH)2 nanosheets have promising applications in urea-rich wastewater remediation, hydrogen production, electrochemical sensors, and fuel cells due to their ability to promote the urea electrolysis reaction.

KW - Electrocatalysts

KW - Hydrogen production

KW - Nickel hydroxide nanosheets

KW - Urea electrolysis

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Exfoliated nickel hydroxide nanosheets for urea electrolysis

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