【公開日：2024.07.25】【最終更新日：2024.05.07】
課題データ / Project Data
課題番号 / Project Issue Number
23NU0272
利用課題名 / Title
Synthesis of fluoride solid state electrolyte by spark plasma sintering
利用した実施機関 / Support Institute
名古屋大学 / Nagoya Univ.
機関外・機関内の利用 / External or Internal Use
内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）加工・デバイスプロセス/Nanofabrication（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）革新的なエネルギー変換を可能とするマテリアル/Materials enabling innovative energy conversion（副 / Sub）-
キーワード / Keywords
電極材料/ Electrode material,蒸着・成膜/ Vapor deposition/film formation,スパッタリング/ Sputtering
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
Jiangqi NIU
所属名 / Affiliation
名古屋大学大学院工学研究科
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
利用形態 / Support Type
（主 / Main）機器利用/Equipment Utilization（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
The device was used for the fabrication of the ion-blocking electrodes for the solid state electrolyte, and the gold film was sputtered on the surfaces of the solid state electrolyte, which was used to measure the ionic conductivity of the electrolyte.
実験 / Experimental
First, the electrolyte sample PbSnF4 was fixed on the sample stage with tape, and the surface need to be sputtered faced upwards, and the sample was put in the chamber and evacuated for four hours. Secondly, the sputtering program was performed, selecting the gold target and the sputtering for 7.5 minutes. Then, the sputtered sample is removed from the chamber. Finally, the sample was tested by electrochemical impedance spectroscopy and the ionic conductivity can be obtained.
結果と考察 / Results and Discussion
From the results of electrochemical impedance spectroscopy, the measurement is improved by using the sputtering device to form the electrodes. The results are shown in Figure 1. Improvements in results include, (1) the absence of deviated messy spots and, (2) better electrode-to-electrolyte contact, resulting in lower contact resistance and increased ionic conductivity. Besides, the ionic conductivity can be expressed as σ=l/(RA), l is the thickness of the pellet, A is the contact area between electrolyte and electrodes and R is the resistance which can be obtained from the EIS results. Therefore the calculated results of ionic conductivity is 2.48×10-3 S/cm. To analyze the reason for the improvement of EIS measurement, (1) during the sputtering process, the contamination can be removed and the surfaces are cleaned to form the activated surface. (2) Sputtering technology can produce dense, uniform films that fill the microscopic pores and defects on the electrode surface, making the electrode surface smoother and reducing the gap between the electrode and solid-state electrolyte, thus improving contact efficiency. In conclusion, the sputtered electrodes with gold can improve the EIS measurement by enhancing the contact between electrolyte and electrodes. Besides, sputtering technology can significantly enhance the contact efficiency between electrodes and solid-state electrolytes by means of surface cleaning and forming dense films.
図・表・数式 / Figures, Tables and Equations
Figure 1 EIS results of PbSnF4 with sputtering Au as ion blocking electrodes
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
Thank the device administrators and trainers for their support.
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件