Exploring the origin of ZrO2 phase in Na3Zr2Si2PO12 ceramic electrolyte

Yang Li; Zheng Sun; Chen Sun; Haibo Jin; Yongjie Zhao

doi:10.1016/j.ceramint.2022.11.084

Exploring the origin of ZrO₂ phase in Na₃Zr₂Si₂PO₁₂ ceramic electrolyte

Yang Li, Zheng Sun, Chen Sun, Haibo Jin, Yongjie Zhao^*

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The development of solid-state batteries based on NASICON-type Na₃Zr₂Si₂PO₁₂ (NZSP) ceramic electrolytes is critically hampered by their unfavorable room temperature ionic conductivity. Moreover, the inadvertent appearance of ionic insulator ZrO₂ phase within NZSP matrix constantly bothers these relevant researches. In this work, via utilizing different kinds of starting materials, it is found that the kinds of Zr source and sintering temperature can regularly affect the relative content of ZrO₂ in the NASICON matrix. More significantly, it reveals that there is no direct correlation between the ZrO₂ content and the room temperature ionic conductivity of NZSP. Moreover, NZSP obtained at 1150 °C via solid-state reaction with Na₂CO₃, ZrO₂, SiO_2, and NH₄H₂PO₄ as starting materials can achieve a room temperature conductivity of 9.1 × 10⁻⁴ S cm⁻¹, which is a relatively high value. The work here offers a thorough understanding of the origin of ZrO₂ phase in NASICON as well as guidance for the mass production of NASICON-type ceramic electrolytes via conventional solid-sate reaction.

Original language	English
Pages (from-to)	3094-3098
Number of pages	5
Journal	Ceramics International
Volume	49
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2022.11.084
Publication status	Published - 15 Jan 2023

Keywords

Ionic conductivity
NASICON
NaZrSiPO
ZrO

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10.1016/j.ceramint.2022.11.084

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title = "Exploring the origin of ZrO2 phase in Na3Zr2Si2PO12 ceramic electrolyte",

abstract = "The development of solid-state batteries based on NASICON-type Na3Zr2Si2PO12 (NZSP) ceramic electrolytes is critically hampered by their unfavorable room temperature ionic conductivity. Moreover, the inadvertent appearance of ionic insulator ZrO2 phase within NZSP matrix constantly bothers these relevant researches. In this work, via utilizing different kinds of starting materials, it is found that the kinds of Zr source and sintering temperature can regularly affect the relative content of ZrO2 in the NASICON matrix. More significantly, it reveals that there is no direct correlation between the ZrO2 content and the room temperature ionic conductivity of NZSP. Moreover, NZSP obtained at 1150 °C via solid-state reaction with Na2CO3, ZrO2, SiO2, and NH4H2PO4 as starting materials can achieve a room temperature conductivity of 9.1 × 10−4 S cm−1, which is a relatively high value. The work here offers a thorough understanding of the origin of ZrO2 phase in NASICON as well as guidance for the mass production of NASICON-type ceramic electrolytes via conventional solid-sate reaction.",

keywords = "Ionic conductivity, NASICON, NaZrSiPO, ZrO",

author = "Yang Li and Zheng Sun and Chen Sun and Haibo Jin and Yongjie Zhao",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd and Techna Group S.r.l.",

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AU - Zhao, Yongjie

PY - 2023/1/15

Y1 - 2023/1/15

N2 - The development of solid-state batteries based on NASICON-type Na3Zr2Si2PO12 (NZSP) ceramic electrolytes is critically hampered by their unfavorable room temperature ionic conductivity. Moreover, the inadvertent appearance of ionic insulator ZrO2 phase within NZSP matrix constantly bothers these relevant researches. In this work, via utilizing different kinds of starting materials, it is found that the kinds of Zr source and sintering temperature can regularly affect the relative content of ZrO2 in the NASICON matrix. More significantly, it reveals that there is no direct correlation between the ZrO2 content and the room temperature ionic conductivity of NZSP. Moreover, NZSP obtained at 1150 °C via solid-state reaction with Na2CO3, ZrO2, SiO2, and NH4H2PO4 as starting materials can achieve a room temperature conductivity of 9.1 × 10−4 S cm−1, which is a relatively high value. The work here offers a thorough understanding of the origin of ZrO2 phase in NASICON as well as guidance for the mass production of NASICON-type ceramic electrolytes via conventional solid-sate reaction.

AB - The development of solid-state batteries based on NASICON-type Na3Zr2Si2PO12 (NZSP) ceramic electrolytes is critically hampered by their unfavorable room temperature ionic conductivity. Moreover, the inadvertent appearance of ionic insulator ZrO2 phase within NZSP matrix constantly bothers these relevant researches. In this work, via utilizing different kinds of starting materials, it is found that the kinds of Zr source and sintering temperature can regularly affect the relative content of ZrO2 in the NASICON matrix. More significantly, it reveals that there is no direct correlation between the ZrO2 content and the room temperature ionic conductivity of NZSP. Moreover, NZSP obtained at 1150 °C via solid-state reaction with Na2CO3, ZrO2, SiO2, and NH4H2PO4 as starting materials can achieve a room temperature conductivity of 9.1 × 10−4 S cm−1, which is a relatively high value. The work here offers a thorough understanding of the origin of ZrO2 phase in NASICON as well as guidance for the mass production of NASICON-type ceramic electrolytes via conventional solid-sate reaction.

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Exploring the origin of ZrO₂ phase in Na₃Zr₂Si₂PO₁₂ ceramic electrolyte

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