Multi-Element Topochemical-Molten Salt Synthesis of One-Dimensional Piezoelectric Perovskite

Lihong Li; Zhongyuan Xiang; Meng Gao; Cheng Bian; Meng Su; Fengyu Li; Xianran Xing; Yanlin Song

doi:10.1016/j.isci.2019.06.012

Multi-Element Topochemical-Molten Salt Synthesis of One-Dimensional Piezoelectric Perovskite

iScience. 2019 Jul 26:17:1-9. doi: 10.1016/j.isci.2019.06.012. Epub 2019 Jun 11.

Authors

Lihong Li¹, Zhongyuan Xiang¹, Meng Gao¹, Cheng Bian², Meng Su², Fengyu Li¹, Xianran Xing², Yanlin Song³

Affiliations

¹ Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China.
² Department of Physical Chemistry and State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China.
³ Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China. Electronic address: ylsong@iccas.ac.cn.

Abstract

One-dimensional perovskites are an interesting material for energy and optoelectronic applications. However, exploring the full wealth of architectures these materials could allow, through multi-element doping of A-sites and B-sites, is still a challenge. Here, we report a high-yield synthetic strategy for 1D perovskites via a two-step method based on a multi-element topochemical-molten salt method. Typically, a high yield of 1D multicomponent perovskite niobates (Li_0.06Na_0.47K_0.47)(Nb_0.94Sb_0.06)O₃ (LNKNS2) is rapidly achieved from as-synthesized 1D K₂(Nb_0.94Sb_0.06)₈O₂₁ with multi-element B-sites. In this process, 1D K₂(Nb_0.94Sb_0.06)₈O₂₁ has been first achieved, and the proportion of the ions in A-sites is affected by the radius and molar ratio of ions. The z axis direction of K₂(Nb_0.94Sb_0.06)₈O₂₁ rod is transformed into the x axis direction of LNKNS2 rod. Furthermore, the output voltage of the 1D niobates-based flexible piezoelectric device (FPD) was nearly 600% compared with that of the isotropic niobates-based FPD. This work also allows convenient fabrication of other 1D multicomponent perovskites.

Keywords: Electronic Materials; Energy Materials; Materials Chemistry; Materials Science; Physics.