Synergistic effect of Al3+/F− on the structure and ionic conductivity of NASICON-type Na3Zr2Si2PO12 solid electrolytes

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-06-01 DOI:10.1016/j.ceramint.2025.02.148

Xianjun Feng, Tingxiao Wu, Longqing He, Nanshan Ma, Haozhang Liang, Zhiwei Luo, Anxian Lu

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引用次数: 0

Abstract

A series of NASICON-type Na₃Zr₂Si₂PO₁₂-xAlF₃ (x = 0, 0.05, 0.10, 0.15, 0.20) solid electrolytes were prepared via solid-state sintering. The X-ray diffraction, X-ray photoelectron spectroscope, field emission scanning electron microscope, infrared spectrum, and AC impedance test were carried out to explore the effects of AlF₃ on the structure and ionic conductivity of NASICON-type Na₃Zr₂Si₂PO₁₂ solid electrolytes. The results revealed that AlF₃ facilitated grain growth, thereby reducing grain boundary resistance. The replacement of Zr⁴⁺ by Al³⁺-ions can expand the transport pathways of Na⁺-ions, enhancing the intragrain conduction of the Na₃Zr₂Si₂PO₁₂ solid electrolytes. In this research, the compound Na₃Zr₂Si₂PO₁₂-0.10AlF₃ demonstrates the greatest ionic conductance, reaching 7.2 × 10⁻⁴ S/cm at room temperature. Moreover, the AlF₃-doped NZSP ceramics demonstrate a low electronic conductivity, indicating their efficacy in mitigating dendrite formation. This study offers valuable insights for the optimization of NASICON-type ceramics in the future.

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Al3+/F−对nasiconon型Na3Zr2Si2PO12固体电解质结构和离子电导率的协同效应

采用固态烧结法制备了一系列nasiconon型Na3Zr2Si2PO12-xAlF3 （x = 0, 0.05, 0.10, 0.15, 0.20）固体电解质。通过x射线衍射、x射线光电子能谱、场发射扫描电镜、红外光谱和交流阻抗测试，探讨AlF3对nasicon型Na3Zr2Si2PO12固体电解质结构和离子电导率的影响。结果表明，AlF3有利于晶粒生长，从而降低晶界阻力。Al3+离子取代Zr4+离子可扩展Na+离子的输运途径，增强Na3Zr2Si2PO12固体电解质的胞内导电。在本研究中，化合物Na3Zr2Si2PO12-0.10AlF3表现出最大的离子电导，在室温下达到7.2 × 10−4 S/cm。此外，alf3掺杂的NZSP陶瓷表现出较低的电子导电性，表明其在减轻枝晶形成方面的有效性。该研究为未来nasicon型陶瓷的优化提供了有价值的见解。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.