Electrochemical behaviors of hierarchical copper nano-dendrites in alkaline media

Bowei Zhang; Guang Yang; Chaojiang Li; Kang Huang; Junsheng Wu; Shiji Hao; Yizhong Huang

doi:10.1007/s12274-018-2010-3

Electrochemical behaviors of hierarchical copper nano-dendrites in alkaline media

Bowei Zhang, Guang Yang, Chaojiang Li, Kang Huang, Junsheng Wu, Shiji Hao, Yizhong Huang^*

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

In this study, hierarchical copper nano-dendrites (CuNDs) are fabricated via the electrodeposition method. The electrochemical behaviors of the as-obtained hierarchical CuNDs in 0.1 M NaOH aqueous solution are subsequently studied. The CuNDs experience a non-equilibrium oxidation process when subjected to cyclic voltammetry (CV) measurements. The first oxidation peak O1 in CV is attributed to the formation of an epitaxial Cu₂O layer over the surface of the hierarchical CuNDs. However, the second oxidation peak O₂ in CV appears unusually broad across a wide potential range. In this region, the reaction process starts with the nucleation and growth of Cu(OH)₂ nanoneedles, followed by the oxidation of Cu₂O. Upon the increase of potential, Cu₂O is gradually transformed to CuO and Cu(OH)₂, forming a dual-layer structure with high productivity of Cu(OH)₂ nanoneedles.

Original language	English
Pages (from-to)	4225-4231
Number of pages	7
Journal	Nano Research
Volume	11
Issue number	8
DOIs	https://doi.org/10.1007/s12274-018-2010-3
Publication status	Published - 1 Aug 2018
Externally published	Yes

Keywords

Cu(OH) nanoneedles
alkaline aqueous solution
copper nano-dendrites (CuNDs)
non-equilibrium oxidation

Access to Document

10.1007/s12274-018-2010-3

Cite this

Zhang, B., Yang, G., Li, C., Huang, K., Wu, J., Hao, S., & Huang, Y. (2018). Electrochemical behaviors of hierarchical copper nano-dendrites in alkaline media. Nano Research, 11(8), 4225-4231. https://doi.org/10.1007/s12274-018-2010-3

@article{44794f035bbd4dea95b8665e78b7ad53,

title = "Electrochemical behaviors of hierarchical copper nano-dendrites in alkaline media",

abstract = "In this study, hierarchical copper nano-dendrites (CuNDs) are fabricated via the electrodeposition method. The electrochemical behaviors of the as-obtained hierarchical CuNDs in 0.1 M NaOH aqueous solution are subsequently studied. The CuNDs experience a non-equilibrium oxidation process when subjected to cyclic voltammetry (CV) measurements. The first oxidation peak O1 in CV is attributed to the formation of an epitaxial Cu2O layer over the surface of the hierarchical CuNDs. However, the second oxidation peak O2 in CV appears unusually broad across a wide potential range. In this region, the reaction process starts with the nucleation and growth of Cu(OH)2 nanoneedles, followed by the oxidation of Cu2O. Upon the increase of potential, Cu2O is gradually transformed to CuO and Cu(OH)2, forming a dual-layer structure with high productivity of Cu(OH)2 nanoneedles.",

keywords = "Cu(OH) nanoneedles, alkaline aqueous solution, copper nano-dendrites (CuNDs), non-equilibrium oxidation",

author = "Bowei Zhang and Guang Yang and Chaojiang Li and Kang Huang and Junsheng Wu and Shiji Hao and Yizhong Huang",

note = "Publisher Copyright: {\textcopyright} 2018, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2018",

month = aug,

day = "1",

doi = "10.1007/s12274-018-2010-3",

language = "English",

volume = "11",

pages = "4225--4231",

journal = "Nano Research",

issn = "1998-0124",

publisher = "Tsinghua University Press",

number = "8",

}

TY - JOUR

T1 - Electrochemical behaviors of hierarchical copper nano-dendrites in alkaline media

AU - Zhang, Bowei

AU - Yang, Guang

AU - Li, Chaojiang

AU - Huang, Kang

AU - Wu, Junsheng

AU - Hao, Shiji

AU - Huang, Yizhong

PY - 2018/8/1

Y1 - 2018/8/1

N2 - In this study, hierarchical copper nano-dendrites (CuNDs) are fabricated via the electrodeposition method. The electrochemical behaviors of the as-obtained hierarchical CuNDs in 0.1 M NaOH aqueous solution are subsequently studied. The CuNDs experience a non-equilibrium oxidation process when subjected to cyclic voltammetry (CV) measurements. The first oxidation peak O1 in CV is attributed to the formation of an epitaxial Cu2O layer over the surface of the hierarchical CuNDs. However, the second oxidation peak O2 in CV appears unusually broad across a wide potential range. In this region, the reaction process starts with the nucleation and growth of Cu(OH)2 nanoneedles, followed by the oxidation of Cu2O. Upon the increase of potential, Cu2O is gradually transformed to CuO and Cu(OH)2, forming a dual-layer structure with high productivity of Cu(OH)2 nanoneedles.

AB - In this study, hierarchical copper nano-dendrites (CuNDs) are fabricated via the electrodeposition method. The electrochemical behaviors of the as-obtained hierarchical CuNDs in 0.1 M NaOH aqueous solution are subsequently studied. The CuNDs experience a non-equilibrium oxidation process when subjected to cyclic voltammetry (CV) measurements. The first oxidation peak O1 in CV is attributed to the formation of an epitaxial Cu2O layer over the surface of the hierarchical CuNDs. However, the second oxidation peak O2 in CV appears unusually broad across a wide potential range. In this region, the reaction process starts with the nucleation and growth of Cu(OH)2 nanoneedles, followed by the oxidation of Cu2O. Upon the increase of potential, Cu2O is gradually transformed to CuO and Cu(OH)2, forming a dual-layer structure with high productivity of Cu(OH)2 nanoneedles.

KW - Cu(OH) nanoneedles

KW - alkaline aqueous solution

KW - copper nano-dendrites (CuNDs)

KW - non-equilibrium oxidation

UR - http://www.scopus.com/inward/record.url?scp=85041835480&partnerID=8YFLogxK

U2 - 10.1007/s12274-018-2010-3

DO - 10.1007/s12274-018-2010-3

M3 - Article

AN - SCOPUS:85041835480

SN - 1998-0124

VL - 11

SP - 4225

EP - 4231

JO - Nano Research

JF - Nano Research

IS - 8

ER -

Electrochemical behaviors of hierarchical copper nano-dendrites in alkaline media

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this