Development of composite device of flexible thin film secondary battery/solar cell for energy harvesting

2016 Fiscal Year Final Research Report

• Project/Area Number: 26340097
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design and evaluation of sustainable and environmental conscious system
• Research Institution: Iwate University
• Principal Investigator: YE RONGBIN 岩手大学, 理工学部, 准教授 (60431459)
• Co-Investigator(Renkei-kenkyūsha): BABA MAMORU 岩手大学, 名誉教授
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 環境発電 / 複合デバイス / 薄膜二次電池 / 太陽電池 / 再生可能エネルギー

Outline of Final Research Achievements

Throughout the present research for developing composite energy devices of flexible thin film secondary batteries and solar cells for utilizing energy harvesting, the following results were obtained. 1) Thin film thicknesses of positive electrode LiMn2O4 and negative electrode Nb2O5 was optimized, the capacity of thin film battery improved to about 40 uAh/cm2. In the development of novel electrolytes, ion conductivity of the LiSiPO is about the same as that of the LiPON thin film, but the sputtering time was saved about 3/4. 2) The performance of solar cells based on ZnO nanorods could only be slightly improved. 3) Composite energy devices could be fabricated using stacking technology, and in the charge/discharge experiments, it was possible to self-charge the thin film secondary battery with the solar cell.

Free Research Field

電子デバイス　再生可能エネルギー