Sol-gel processing of thin film-type metal-air battery using solution plasma

2014 Fiscal Year Final Research Report

• Project/Area Number: 25620182
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic industrial materials
• Research Institution: Shizuoka University
• Principal Investigator: SUZUKI HISAO 静岡大学, 電子工学研究所, 教授 (70154573)
• Co-Investigator(Kenkyū-buntansha): WAKIYA Naoki 静岡大学, 電子工学研究所, 教授 (40251623) ; SAKAMOTO Naonori 静岡大学, 電子工学研究所, 助教 (80451996)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: ゾルゲル法 / 液中プラズマ法 / 複合アルコキシド / 部分加水分解 / 薄膜型金属－空気電池 / C12A7 / 固体電解質 / 低温合成

Outline of Final Research Achievements

In this study, basic research on the development of high-performance 12CaO・7Al2O3（C12A7) electrode and solid electrolyte is aimed through the sol-gel processing. As a result, C12A7 has been successfully synthesized at lower temperatures of 900 °C from Ca- and Al- double alkoxide through the solution plasma processing. If liquid precursor of water was used in the solution plasma, the resulting C12A7 contains harmful hydroxide ion in the crystal cage to suppress the ion exchange. In addition, solution plasma processing can form the metastable C12A7 new phase with larger lattice parameter, showing possibility of intercalation of larger ion species such as (Li-O＝) to develop the high-performance metal-air battery.
On the other hand, low-tepmerature thisnthesis of solid electrolyte of cubic type Li7La3Zr2O12 was successfully realized by the partial hydrolysis of zirconium alkoxides following the homogeneous reaction with La and Li sources in the partially hydrolyzed solution.

Free Research Field

無機材料科学