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Citation: Zhang Yu-Zhi, Kuai Su-Lan, Huang Yin-Song, Wang Zhong-Chun, Hu Xing-Fang. X-ray Photoelectron Spectroscopic Study on Electrochromic Molybdenum Oxide Films[J]. Acta Physico-Chimica Sinica, ;2001, 17(01): 79-82. doi: 10.3866/PKU.WHXB20010117 shu

X-ray Photoelectron Spectroscopic Study on Electrochromic Molybdenum Oxide Films

1.
Research & Development Center of Special Inorganic Materials,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai　200050

Received Date: 7 April 2000
Available Online: 15 January 2001

Molybdenum oxide films were fabricated successfully by spin coating from Li＋doped peroxopolymolybdate solution via solgel technique.Their electrochemical and electrochromic properties were investigated by cyclic voltammetry and insitu UV transmittance measurements.The results showed that the films possessed excellent electrochemical stability and reversibility.The electrochromic mechanism of the MoO3 was discussed by using results obtained from Xray photoelectron spectroscopy (XPS).The results showed that the most part of the Mo6＋ in MoO3 film was reduced to Mo5＋ and Mo4＋ ions during the Li＋ intercalation process,Mo4＋ was oxidized to Mo5＋ and part of Mo5＋ was oxidized to Mo6＋ again during the Li＋ deintercalation process.So it was considered that Mo4＋ ions existed in the colored MoO3 films.
- MoO₃ films;Electrochromic;X-ray photoelectron spectroscopy (XPS)
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