Investigation of the stability of NASICON-type solid electrolyte in neutral-alkaline aqueous solutions

Minjie Hou; Tao Qu; Qingkai Zhang; Yao Yaochun; Yongnian Dai; Feng Liang; Gaku Okuma; Katsuro Hayashi

doi:10.1016/j.corsci.2020.109012

Investigation of the stability of NASICON-type solid electrolyte in neutral-alkaline aqueous solutions

Minjie Hou, Tao Qu, Qingkai Zhang, Yao Yaochun, Yongnian Dai, Feng Liang, Gaku Okuma, Katsuro Hayashi

応用精密化学

研究成果: Contribution to journal › Article › 査読

1 被引用数 (Scopus)

抄録

The effects of aqueous solutions with different pH values on the ionic conductivity of Na₃Zr₂Si₂PO₁₂ (NASICON) are studied at room temperature. The ionic conductivity of NASCION reduced severely in the solution with pH value of 7. The AC impedance method was used to study the changes of the bulk, grain boundary, and cracking surface resistances of the sample under different conditions. The electrolyte morphology, cell parameters, Na⁺ site occupancy fraction, and microscopic strain change were obtained by SEM and XRD data refinement. According to above analysis, the degradation processes of hydration, grain refinement, and surface cracking were observed gradually, the corresponding corrosion mechanism of NASICON in aqueous solutions was explained.

本文言語	英語
論文番号	109012
ジャーナル	Corrosion Science
巻	177
DOI	https://doi.org/10.1016/j.corsci.2020.109012
出版ステータス	出版済み - 12 2020

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

文献へのアクセス

10.1016/j.corsci.2020.109012

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引用スタイル

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title = "Investigation of the stability of NASICON-type solid electrolyte in neutral-alkaline aqueous solutions",

abstract = "The effects of aqueous solutions with different pH values on the ionic conductivity of Na3Zr2Si2PO12 (NASICON) are studied at room temperature. The ionic conductivity of NASCION reduced severely in the solution with pH value of 7. The AC impedance method was used to study the changes of the bulk, grain boundary, and cracking surface resistances of the sample under different conditions. The electrolyte morphology, cell parameters, Na+ site occupancy fraction, and microscopic strain change were obtained by SEM and XRD data refinement. According to above analysis, the degradation processes of hydration, grain refinement, and surface cracking were observed gradually, the corresponding corrosion mechanism of NASICON in aqueous solutions was explained.",

author = "Minjie Hou and Tao Qu and Qingkai Zhang and Yao Yaochun and Yongnian Dai and Feng Liang and Gaku Okuma and Katsuro Hayashi",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China ( 51704136 , 11765010 ), the Freely Exploring Fund for Academicians in Yunnan Province ( 2018HA006 ).",

year = "2020",

month = dec,

doi = "10.1016/j.corsci.2020.109012",

language = "English",

volume = "177",

journal = "Corrosion Science",

issn = "0010-938X",

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T1 - Investigation of the stability of NASICON-type solid electrolyte in neutral-alkaline aqueous solutions

AU - Hou, Minjie

AU - Qu, Tao

AU - Zhang, Qingkai

AU - Yaochun, Yao

AU - Dai, Yongnian

AU - Liang, Feng

AU - Okuma, Gaku

AU - Hayashi, Katsuro

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China ( 51704136 , 11765010 ), the Freely Exploring Fund for Academicians in Yunnan Province ( 2018HA006 ).

PY - 2020/12

Y1 - 2020/12

N2 - The effects of aqueous solutions with different pH values on the ionic conductivity of Na3Zr2Si2PO12 (NASICON) are studied at room temperature. The ionic conductivity of NASCION reduced severely in the solution with pH value of 7. The AC impedance method was used to study the changes of the bulk, grain boundary, and cracking surface resistances of the sample under different conditions. The electrolyte morphology, cell parameters, Na+ site occupancy fraction, and microscopic strain change were obtained by SEM and XRD data refinement. According to above analysis, the degradation processes of hydration, grain refinement, and surface cracking were observed gradually, the corresponding corrosion mechanism of NASICON in aqueous solutions was explained.

AB - The effects of aqueous solutions with different pH values on the ionic conductivity of Na3Zr2Si2PO12 (NASICON) are studied at room temperature. The ionic conductivity of NASCION reduced severely in the solution with pH value of 7. The AC impedance method was used to study the changes of the bulk, grain boundary, and cracking surface resistances of the sample under different conditions. The electrolyte morphology, cell parameters, Na+ site occupancy fraction, and microscopic strain change were obtained by SEM and XRD data refinement. According to above analysis, the degradation processes of hydration, grain refinement, and surface cracking were observed gradually, the corresponding corrosion mechanism of NASICON in aqueous solutions was explained.

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