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Citation: Wu Zheng-Hua, Qiu Si-Chou, Huang Han-Yao, He Hua-Hui. Study on the Characteristics and Mechanism of Electrochromism of NiO_xH_y Thin Film[J]. Acta Physico-Chimica Sinica, ;1996, 12(07): 615-620. doi: 10.3866/PKU.WHXB19960708 shu

Study on the Characteristics and Mechanism of Electrochromism of NiO_xH_y Thin Film

1.
Department of Solid State Electronics,Huazhong University of Science and Technoly,Wuhan 430074

Received Date: 7 December 1995
Available Online: 15 July 1996

The electrochromic characteristics of the NiOxHy thin film DC sputtered from powder Ni(OH)2 target are investigated in LiClO4-PC nonaqueous electrolyte by cyclic voltammetry, volt -transmittance and step potential methods. The spontaneous bleaching process occurs in the zero potential period immediately after the colouring period and corresponds to the Li+ insertion. The colouration process is not spontaneous. XPS spectra are obtained for the bleached and coloured states in Ni2p3/2 and O1s regions. Ni atoms are oxidized in coloured state and reduced in bleached state. The chemical enviroments for O atoms are changed accordingly.
- NiO_xH_y thin film,
- Electrochemical ion insertion/extraction,
- Electrochromism,
- XPS spectra
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Study on the Characteristics and Mechanism of Electrochromism of NiOxHy Thin Film

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Study on the Characteristics and Mechanism of Electrochromism of NiO_xH_y Thin Film