Citation: Wu Zheng-Hua, Qiu Si-Chou, Huang Han-Yao, He Hua-Hui. Study on the Characteristics and Mechanism of Electrochromism of NiOxHy Thin Film[J]. Acta Physico-Chimica Sinica, 1996, 12(07): 615-620. doi: 10.3866/PKU.WHXB19960708
NiOxHy薄膜的电致变色特性和机理
运用循环伏安和阶跃电位方法研究了Ni（OH）2粉末靶直流溅射沉积的NiOxHy薄膜电致变色特性．结合实时的光透射-时间变化，发现着色后的薄膜在零外电势下有一自发的消色过程，该过程可能对应着Li+的自发注入。着色没有自发过程. 获取了着消色状态Ni2p3／2和O1s的XPS谱，表明在着色态镍被氧化，消色态镍被还原，相应地氧的化学环境发生改变．
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关键词:
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NiOxHy薄膜
- / 电化学离子注入/抽出
- / 电致变色
- / XPS谱
English
Study on the Characteristics and Mechanism of Electrochromism of NiOxHy Thin Film
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.
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