Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Surakarta, Indonesia
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@article{JKSA34792, author = {Imam Alaih and Sidiq Fathonah and Khoirina Nugrahaningtyas and Fitria Rahmawati}, title = {Addition of Calcined Na2B4O7 on the Synthesis of Li7La3Zr2O12}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {24}, number = {3}, year = {2021}, keywords = {LLZO garnet; B-Al doping; zirconia; all-solid-state lithium battery}, abstract = {Li 7 La 3 Zr 2 O 12 (LLZO) is a garnet-type electrolyte for all-solid-state lithium-ion batteries (ASSB). It has good chemical and electrochemical stability against lithium and a relatively high ionic conductivity. However, the ionic conductivity needs to be further increased to provide a high specific capacity of the ASSB. Element doping into LLZO is an effort to increase molecular defect, known to enhance the conductivity. This research studied the effect of the Na 2 B 4 O 7 addition on the LLZO synthesis, producing LLZBO(A). The investigation aims to understand whether the sodium ions dope into the LLZO structure during synthesis, or it is only B ions to enter into the structure. Therefore, another synthesis with B 2 O 3 of B precursor was conducted for comparison (LLZBO(B)). The precursors were mixed stoichiometrically by following the formula of Li 7-x La 3-x Zr 2-x B x Na x O 12 (LLZBO, x= 0.15; 0.20; 0.30). XRD analysis equipped with Le Bail refinement found that LLZBO(A) and LLZBO(B) mainly consist of cubic and tetragonal LLZO with a %mol of 69.06 – 69.84 %, and the main secondary phase is La 2 Zr 2 O 7 . The surface morphology of LLZBO(A) and LLZBO(B) is almost similar to the irregular form of large aggregates. The particles become more dispersed when 0.3 %mol dopant was submitted. Impedance analysis found a high ionic conductivity of LLZBAO(A)0.3 1.042x10 -3 Scm -1 .}, issn = {2597-9914}, pages = {77--84} doi = {10.14710/jksa.24.3.77-84}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/34792} }
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A different zirconia precursor for Li7La3Zr2O12 synthesis
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