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陈煜,侯广亚,唐谊平,伍廉奎,曹华珍,郑国渠.Ni-Ti-O纳米片/泡沫镍复合电极的显微结构及其电化学性能[J].稀有金属材料与工程(英文),2018,47(10):3134~3140.[Chen Yu,Hou Guangya,Tang Yiping,Wu Liankui,Cao Huazhen and Zheng Guoqu.Microstructure and Electrochemical Properties of Ni-Ti-O Nanosheets Supported on Ni Foam[J].Rare Metal Materials and Engineering,2018,47(10):3134~3140.]
Microstructure and Electrochemical Properties of Ni-Ti-O Nanosheets Supported on Ni Foam
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Received:December 26, 2016  Revised:April 03, 2017
DOI:
Key words: Ni-Ti-O nanosheet  microstructure  hydrothermal synthesis  methanol catalysis  capacitance property
Foundation item:国家自然科学基金(51101140)和浙江省自然科学基金(LY16E010004)资助。
Author NameAffiliation
Chen Yu,Hou Guangya,Tang Yiping,Wu Liankui,Cao Huazhen and Zheng Guoqu  
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Abstract:
      Ni-Ti-O nanosheets were fabricated on 3D porous nickel foam by hydrothermal synthesis and thermal diffusion metallizing. Scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) were used to investigate the micro morphology and phase of NiO and Ni-Ti-O nanostructure. The methanol catalytsis performance and capacitance properties of these electrodes were investigated by cyclic voltammetry and charge- discharge tests. The results show that the phase of Ni-Ti-O nanosheets fabricated on 3D porous nickel foam are NiO and TiO with polycrystalline form; The permeation of Ti result in oxygen vacancies in NiO nanosheets and produce synergistic effect with Ni, which makes that the electrocatalytic property of methanol oxidation of Ni-Ti-O nanosheet electrode is much larger than that of Ni(OH)2 and NiO electrode; When the the mass ratio of Ni foam and Ti powder (RNi/Ti) is 1:24, at a current density of 5 mA?cm-2, the area specific capacitance of Ni-Ti-O electrode is 2.15 F?cm-2, which is 3 times more than that of Ni(OH)2/Ni foam electrode (0.67 F?cm-2).