High Voltage Electron Phase Differential Microscopy of Metal-Ion Conductor Interfaces

2017 Fiscal Year Final Research Report

• Project/Area Number: 25246001
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanostructural chemistry
• Research Institution: Nagoya University
• Principal Investigator: Tanji Takayoshi 名古屋大学, 未来社会創造機構, 研究員 (90125609)
• Co-Investigator(Renkei-kenkyūsha): 臼倉 治郎 名古屋大学, 理学部, 特任教授 (30143415) ; 川﨑 忠寛 名古屋大学, 未来材料システム研究所, 客員准教授 (10372533) ; 石田 高史 名古屋大学, 未来材料システム研究所, 助教 (60766525)
• Research Collaborator: 富田 正弘 (株)真空デバイス
• Project Period (FY): 2013-10-21 – 2017-03-31
• Keywords: 電子線位相微分顕微鏡法 / A-B効果位相板 / 環境電子顕微鏡 / 超高圧走査透過電子顕微鏡 / 固体酸化物形燃料電池 / 非染色生体試料観察

Outline of Final Research Achievements

In order to observe the phenomenon including the property of ions at the triple interface of electrolyte, electrode and gas environment in a solid oxide type fuel cell by means of an ultra high voltage environmental electron microscope equipped with a LaB6 thermionic electron gun, we developed 1) a special phase plate holder placed under the intermediate lens, 2 ) a special specimen holder which can heat and apply external voltage to the specimen in the gas atmosphere, and 3) the specimen preparation technique by a focused ion beam instrument. Using these instruments and technique we observed 1) the behavior of Oxygen ions at the interfaces of Pt/YSZ and Pt/GDC by electron microscopy, electron energy loss spectroscopy and 2) the electric field inside and outside of charged latex sphere and 3) at the p-n junction in a semiconductor of GaAs, and also observed 4) non stained biomaterials.

Free Research Field

電子顕微鏡学