标题：Fabrication of dense and porous Li2ZrO3nanofibers with electrospinning method
作者：Yuan, Kangkang ;Jin, Xiaotong ;Xu, Chonghe ;Wang, Xinqiang ;Zhang, Guanghui ;Zhu, Luyi ;Xu, Dong
作者机构：[Yuan, Kangkang ;Jin, Xiaotong ;Xu, Chonghe ;Wang, Xinqiang ;Zhang, Guanghui ;Zhu, Luyi ;Xu, Dong ] State Key Laboratory of Crystal Materials and Inst 更多
来源：Applied Physics A: Materials Science and Processing
摘要：Lithium zirconate (Li2ZrO3) has been extensively studied as CO2capture material, electrolyte material and coating material. Most of the previous studies were focused on the powder structure, while seldom taking a consideration of fiber structure. In the present work, dense and porous Li2ZrO3nanofibers with surface area of 16 m2 g−1were prepared by electrospinning method. IR spectral results showed that lithium carbonate was the intermediate for the formation of Li2ZrO3. The phase transformation of Li2ZrO3underwent the pathway of amorphous precursor fibers, tetragonal zirconia and Li2CO3, tetragonal Li2ZrO3, and monoclinic Li2ZrO3. XRD and XPS results further suggested that Li2O diffusion from the fiber body to surface occurred for Li2ZrO3nanofibers when heat-treated above 900 °C, and the tetragonal Li2ZrO3with high surface area could be obtained at 800 °C. Bamboo structure appeared both for the dense and porous nanofibers heat-treated at 1000 °C. The high surface area and high thermal stability of tetragonal phase of Li2ZrO3make it a promising candidate in CO2absorption, electrolyte and coating material.
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