Utilization of ionic conduction for developing ceramic electrets applicable to vibration power generator
Project/Area Number |
23685047
|
Research Category |
Grant-in-Aid for Young Scientists (A)
|
Allocation Type | Single-year Grants |
Research Field |
Inorganic industrial materials
|
Research Institution | Tokyo University of Science (2013) Kyushu University (2011-2012) |
Principal Investigator |
TANAKA Yumi 東京理科大学, 工学部, 准教授 (00436619)
|
Project Period (FY) |
2011-04-01 – 2014-03-31
|
Project Status |
Completed (Fiscal Year 2013)
|
Budget Amount *help |
¥27,560,000 (Direct Cost: ¥21,200,000、Indirect Cost: ¥6,360,000)
Fiscal Year 2013: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2012: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2011: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
|
Keywords | セラミックス / イオン結晶 / 誘電体物性 / 表面・界面物性 / 新エネルギー / エレクトレット / セラミック / 振動発電 / イオン伝導体 |
Research Abstract |
An electret power generator can convert low-frequency vibrations (1-100 Hz) directly into electricity, however, the applications are limited because of it's low electrogenic ability. Although the higher surface potential on the electrets is effective to promote the power density, the potential level of currently-used polymer electrets is almost saturated due to their poor resistivity against the hard charging treatment. Hence we aimed to develop new ceramic electrets based on the approach of controlling ionic migrations and their congelation within the ceramics. Through this study, we found that oxyhydroxyaptite (OHA) could be polarized under a dc electrical field at elevated temperature. The surface potential on polarized OHA ceramics reached above 1000 V, which was stable at least over a year. Considering the fact that the surface potential of polymer electrets is limited to several hundred volts, OHA electrets should be promising material applicable to the electret power generator.
|
Report
(4 results)
Research Products
(78 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Patent(Industrial Property Rights)] 低温劣化の抑制された安定化ジルコニア2011
Inventor(s)
田中優実, 稲田幹, 榎本尚也, 北條純一, 原浩之, 山下仁大
Industrial Property Rights Holder
田中優実, 稲田幹, 榎本尚也, 北條純一, 原浩之, 山下仁大
Industrial Property Number
2011-203796
Filing Date
2011-09-16
Related Report
-