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6490 |
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Wednesday, June 10, 2020, Hall K2 12:10 PM Suspension Spraying I |
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Development of a novel quais-solution precursor plasma spray (QSPPS) process for ternary metal oxides films with well-shaped nanostructures |
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Zexin Yu* / University Bourgogne Franche-Comté, France YU Zexin / Université de Bourgogne Franche-Comté, France Meimei Liu/ Université de Bourgogne Franche-Comté, France Michel Moliere/ Université de Bourgogne Franche-Comté, France Hanlin Liao/ Université de Bourgogne Franche-Comté, France |
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Solution precursor thermal spray (SPTS) possesses priorities, not only in fine-structures and thin thickness, but also in tunable complex phase compositions. It should be noted that, many non-mechanical functional films (e.g. electrode films for batteries and supercapacitors) prefer porous morphologies composed of well-shaped nanostructures (e.g nanorods, nanoflakes). Unfortunately, the ordinary SPTS-deposited films were only composed of irregular particles. Therefore, in order to deposit films with well-shaped nanostructures, a novel quails-solution precursor plasma spray (QSPPS) process was proposed. This new technique combines the classic wet chemical route and SPTS route. Herein, ZnCo2O4 film as an example to confirm the possibility of QSPPS route for deposition of well-shaped nanostructures, and investigate the effects of spraying parameters on the morphologies and phase compositions. The resultant films under different deposition conditions were characterized by SEM, XRD, Raman and XPS. Besides, taking supercapacitor electrode as a case study, the electrochemical properties of QSPPS-deposited ZnCo2O4 films were further evaluated. Overall, this work proposes an improved SPTS route for depositing films with highly catalytic performance, which not only expands the capabilities of thermal spray fields in more potential industrial applications, but also supplies more alternative options for elaboration of functional films. |