The determination of Li+ mobility in solid electrolyte Li1.3Al0.1Zn0.1Ti1.8P3O12 in view of ionic diffusivity and conductivity |
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| Authors: | Shan Gao Miao Shui Jie Shu Weidong Zheng Liangliang Chen Lin Feng Yuanlong Ren |
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| Institution: | 1. The State Key Laboratory Base of Novel Functional Materials and Preparation Science, The Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, People’s Republic of China
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| Abstract: | Nasicon-type solid electrolyte Li1.3Al0.1Zn0.1Ti1.8P3O12 was prepared by citric acid-assisted acrylamide polymerisation gel method. X-ray diffraction pattern showed that the introduction of Zn2+ in the parent matrix Li1+x Al x Ti2?x P3O12 made it easier to get high-purity rhombohedral structure (space group $ R\overline 3 C $ ) Li1.3Al0.1Zn0.1Ti1.8P3O12 without the evidence of impurity secondary phase. The Li+ kinetics were investigated by complex impedance in bulk pellet and ionic conductivity in battery-type composite cathode, respectively. Grain-interior resistance measured by galvanostatic intermittent titration technique, potential step chronoamperometry, and AC impedance spectroscopy at 20 °C varies in the range 1.2–1.95?×?10?4?S?cm?1, which is in good agreement with that obtained by complex impedance method 1.5?×?10?4?S?cm?1. |
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