Electrochromic characteristics of a nickel borate thin film investigated by in situ XAFS and UV/vis spectroscopy

Masaaki Yoshida; Tsuyoshi Iida; Takehiro Mineo; Takumi Yomogida; Kiyofumi Nitta; Kazuo Kato; Hiroaki Nitani; Hitoshi Abe; Tomoya Uruga; Hiroshi Kondoh

doi:10.5796/electrochemistry.82.355

Electrochromic characteristics of a nickel borate thin film investigated by in situ XAFS and UV/vis spectroscopy

Masaaki Yoshida, Tsuyoshi Iida, Takehiro Mineo, Takumi Yomogida, Kiyofumi Nitta, Kazuo Kato, Hiroaki Nitani, Hitoshi Abe, Tomoya Uruga, Hiroshi Kondoh

Department of Chemistry

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

12 Citations (Scopus)

Abstract

The electrochromic transition of a nickel borate thin film between colorless and brown was examined by means of in situ XAFS and UV/vis spectroscopy. The XAFS spectra showed that the average valence state of the nickel species in the film changed from +2.1 to +3.8 following the application of an electrode potential. Additionally, a broad peak at 700nm was observed during in situ UV/vis absorption measurements on the application of a positive potential. These results suggest that the nickel borate film reversibly forms a NiOOH structure with a domain size of several nanometers during the electrochromic reaction.

Original language	English
Pages (from-to)	355-358
Number of pages	4
Journal	Electrochemistry
Volume	82
Issue number	5
DOIs	https://doi.org/10.5796/electrochemistry.82.355
Publication status	Published - 2014 May

Keywords

Electrochromism
In situ measurement
Nickel borate
X-ray absorption spectroscopy

ASJC Scopus subject areas

Electrochemistry

Access to Document

10.5796/electrochemistry.82.355

Cite this

Electrochromic characteristics of a nickel borate thin film investigated by in situ XAFS and UV/vis spectroscopy. / Yoshida, Masaaki; Iida, Tsuyoshi; Mineo, Takehiro; Yomogida, Takumi; Nitta, Kiyofumi; Kato, Kazuo; Nitani, Hiroaki; Abe, Hitoshi; Uruga, Tomoya; Kondoh, Hiroshi.

In: Electrochemistry, Vol. 82, No. 5, 05.2014, p. 355-358.

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

@article{e1adf15799ae405ab7c4a111dcf3246b,

title = "Electrochromic characteristics of a nickel borate thin film investigated by in situ XAFS and UV/vis spectroscopy",

abstract = "The electrochromic transition of a nickel borate thin film between colorless and brown was examined by means of in situ XAFS and UV/vis spectroscopy. The XAFS spectra showed that the average valence state of the nickel species in the film changed from +2.1 to +3.8 following the application of an electrode potential. Additionally, a broad peak at 700nm was observed during in situ UV/vis absorption measurements on the application of a positive potential. These results suggest that the nickel borate film reversibly forms a NiOOH structure with a domain size of several nanometers during the electrochromic reaction.",

keywords = "Electrochromism, In situ measurement, Nickel borate, X-ray absorption spectroscopy",

author = "Masaaki Yoshida and Tsuyoshi Iida and Takehiro Mineo and Takumi Yomogida and Kiyofumi Nitta and Kazuo Kato and Hiroaki Nitani and Hitoshi Abe and Tomoya Uruga and Hiroshi Kondoh",

year = "2014",

month = may,

doi = "10.5796/electrochemistry.82.355",

language = "English",

volume = "82",

pages = "355--358",

journal = "Electrochemistry",

issn = "1344-3542",

publisher = "Electrochemical Society of Japan",

number = "5",

}

TY - JOUR

T1 - Electrochromic characteristics of a nickel borate thin film investigated by in situ XAFS and UV/vis spectroscopy

AU - Yoshida, Masaaki

AU - Iida, Tsuyoshi

AU - Mineo, Takehiro

AU - Yomogida, Takumi

AU - Nitta, Kiyofumi

AU - Kato, Kazuo

AU - Nitani, Hiroaki

AU - Abe, Hitoshi

AU - Uruga, Tomoya

AU - Kondoh, Hiroshi

PY - 2014/5

Y1 - 2014/5

N2 - The electrochromic transition of a nickel borate thin film between colorless and brown was examined by means of in situ XAFS and UV/vis spectroscopy. The XAFS spectra showed that the average valence state of the nickel species in the film changed from +2.1 to +3.8 following the application of an electrode potential. Additionally, a broad peak at 700nm was observed during in situ UV/vis absorption measurements on the application of a positive potential. These results suggest that the nickel borate film reversibly forms a NiOOH structure with a domain size of several nanometers during the electrochromic reaction.

AB - The electrochromic transition of a nickel borate thin film between colorless and brown was examined by means of in situ XAFS and UV/vis spectroscopy. The XAFS spectra showed that the average valence state of the nickel species in the film changed from +2.1 to +3.8 following the application of an electrode potential. Additionally, a broad peak at 700nm was observed during in situ UV/vis absorption measurements on the application of a positive potential. These results suggest that the nickel borate film reversibly forms a NiOOH structure with a domain size of several nanometers during the electrochromic reaction.

KW - Electrochromism

KW - In situ measurement

KW - Nickel borate

KW - X-ray absorption spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84899852078&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899852078&partnerID=8YFLogxK

U2 - 10.5796/electrochemistry.82.355

DO - 10.5796/electrochemistry.82.355

M3 - Article

AN - SCOPUS:84899852078

VL - 82

SP - 355

EP - 358

JO - Electrochemistry

JF - Electrochemistry

SN - 1344-3542

IS - 5

ER -

Electrochromic characteristics of a nickel borate thin film investigated by in situ XAFS and UV/vis spectroscopy

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this