Improvement of the reliability of potassium-ion electrets thorough an additional oxidation process

Autor:	Yoshiki Ohata, Toru Nakanishi, Kenta Chokawa, Masaaki Araidai, Takuma Ishiguro, Hiroyuki Mitsuya, Hiroshi Toshiyoshi, Yasushi Shibata, Gen Hashiguchi, Kenji Shiraishi
Rok vydání:	2022
Předmět:	Physics and Astronomy (miscellaneous)
Zdroj:	Applied Physics Letters. 121:243903
ISSN:	1077-3118 0003-6951
Popis:	Potassium-ion electrets, which mainly consist of amorphous silica and permanently store negative charge, are vital elements of small autonomous vibration-powered generators. However, negative charge decay is sometimes observed to cause issues for applications. In this study, we propose an improved guideline for the fabrication of potassium-ion electrets by first-principles calculations based on density functional theory, which shows that yield reduction can be suppressed by additional oxidation. Moreover, we experimentally confirm that the additional oxidation step effectively extends the lifetime of potassium-ion electrets.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::94f1b9c2393d117afe0256cb191756f9 https://doi.org/10.1063/5.0129247 Zobrazit plný text záznamu