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

• 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
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• 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 / 再生エネルギー / 持続可能システム / 薄膜太陽電池

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.

Research Products

• [Journal Article] Electrochemical Properties of Amorphous Nb2O5 Thin Film and Its Application to Rechargeable Thin Film Lithium Ion Batteries (2016)
  • Author(s): Rongbin YE, Koji Ohta and Mamoru Baba
  • Journal Title: ECS Transactions Volume: 73 Issue: 1 Pages: 49-55
  • DOI: 10.1149/07301.0049ecst
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Photovoltaic performance and long-term stability of hybrid ZnO/TiOPc solar cells with DH-α6T as an electron blocking layer (2015)
  • Author(s): Rongbin YE, Manami Yanagida, Koji Ohta and Mamoru Baba
  • Journal Title: Advanced Materials Research Volume: 1070-1072 Pages: 620-624
  • DOI: 10.4028/www.scientific.net/amr.1070-1072.620
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] ZnOナノ構造の製作及び評価 (2016)
  • Author(s): 趙 路, 叶榮彬, 太田康治, 西館数芽
  • Organizer: 応用物理学会東北支部第71回学術講演会
  • Place of Presentation: 東北大学（宮城県仙台市）
  • Year and Date: 2016-12-01
• [Presentation] Fabrication and characterization of LiCoO2 thin films for flexible thin film lithium ion batteries (2016)
  • Author(s): Rongbin Ye, Keidai Sasaki, Koji Ohta, Mamoru Baba
  • Organizer: 67th Annual Meeting of the International Society of Electrochemistry (ISE67)
  • Place of Presentation: The Hague, Netherland
  • Year and Date: 2016-08-21
  • Int'l Joint Research
• [Presentation] Fabrication and characterization of LiCoO2 thin films for flexible thin film lithium ion batteries (2016)
  • Author(s): Rongbin Ye, Kendai Sasaki, Koji Ohta and Mamoru Baba
  • Organizer: The 67th Annual Meeting of ISE
  • Place of Presentation: The Hague, The Netherlands
  • Year and Date: 2016-08-21
  • Int'l Joint Research
• [Presentation] Electrochemical Properties of Amorphous Nb2O5 Thin Film and Its Application to Rechargeable Thin Film Lithium Ion Batteries (2016)
  • Author(s): Rongbin Ye, Koji Ohta and Mamoru Baba
  • Organizer: 18th International Meeting on Lithium Batteries (IMLB 2016)
  • Place of Presentation: Chicago, USA
  • Year and Date: 2016-06-19
  • Int'l Joint Research
• [Presentation] Nanoporous Anodic TiO2-TiO-TiN Composite Films with Enhanced Capacity As Anode Materials for Lithium Ion Batteries (2016)
  • Author(s): S. Z. Kure-Chu, H. Sakuyama, R. Ye, H. Yashiro, H. Segawa, K. Wada, and S. Inoue
  • Organizer: 18th International Meeting on Lithium Batteries (IMLB 2016)
  • Place of Presentation: Chicago, USA
  • Year and Date: 2016-06-19
  • Int'l Joint Research
• [Presentation] Electrochemical Properties of Amorphous Nb2O5 Thin Film and Its Application to Rechargeable Thin Film Lithium Ion Batteries (2016)
  • Author(s): Rongbin Ye, Koji Ohta and Mamoru Baba
  • Organizer: The 18th International Meeting on Lithium Batteries
  • Place of Presentation: Chicago, USA
  • Year and Date: 2016-06-19
  • Int'l Joint Research
• [Presentation] LiCoO2正極膜を用いたフレキシブル薄膜リチウムイオン二次電池の作製及び評価 (2015)
  • Author(s): 佐々木慶大，叶榮彬，太田康治，西館数芽，馬場守
  • Organizer: 応用物理学会東北支部第70回学術講演会
  • Place of Presentation: 青森県南田温泉（青森県平川市）
  • Year and Date: 2015-12-03
• [Presentation] Fabrication and Characterization of Flexible Thin-Film Rechargeable Li-Ion Batteries with Sputtered Amorphous Thin Film Electrodes (2015)
  • Author(s): Rongbin Ye, Koji Ohta and Mamoru Baba
  • Organizer: The 5th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2015)
  • Place of Presentation: Niigata, Japan
  • Year and Date: 2015-06-16
  • Int'l Joint Research
• [Presentation] Photovoltaic performance and long-term stability of hybrid ZnO/TiOPc solar cells with DH-α6T as an electron blocking layer (2014)
  • Author(s): Rongbin YE, Manami Yanagida, Koji Ohta and Mamoru Baba
  • Organizer: 2014 4th International Conference on Energy, Environment and Sustainable Development
  • Place of Presentation: Nanjing, China
  • Year and Date: 2014-10-25 – 2014-10-26
• [Remarks] https://www.sites.google.com/site/yelabsites/home
• [Remarks] スマートエネルギー工学研究グループ
  • URL: http://www.sperc.eng.iwate-u.ac.jp/?p=363