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成果報告書詳細
管理番号20190000000586
タイトル*2018年度中間年報 革新型蓄電池実用化促進基盤技術開発(国立大学法人京都大学 株式会社村田製作所 トヨタ自動車株式会社 株式会社豊田中央研究所 日産自動車株式会社 パナソニック株式会社 日立化成株式会社 株式会社日立製作所 マクセル株式会社 株式会社本田技術研究所)
公開日2019/6/14
報告書年度2018 - 2018
委託先名国立大学法人京都大学 株式会社村田製作所 トヨタ自動車株式会社 株式会社豊田中央研究所 日産自動車株式会社 パナソニック株式会社 日立化成株式会社 株式会社日立製作所 マクセル株式会社 株式会社本田技術研究所
プロジェクト番号P16001
部署名次世代電池・水素部
和文要約
英文要約Research & Development Initiative for Scientific Innovation of New Generation Batteries 2 (RISING2); (FY2016-FY2020) FY2018 Annual Report

The project is composed of the advanced analytical technology group and the innovative battery research group. In the advanced analytical technology group, we develop experimental techniques for observation of an electrochemical reaction in an operand battery cell, analyses of structure and phase transition at an electrode/electrolyte interface, and characterization of amorphous and low-crystalline phases at the interface and in electrolytes. Some innovative analytical techniques have been developed, i.e. the electron state imaging by the high energy x-ray photoelectron spectroscopy (HXPES) at the beamline BL-28XU in SPring-8, the imaging of lithium and its compounds by the Bragg-edge diffraction method at the beamline SPICA in J-PARC, and simulation techniques of a solvent structure in an electrolyte and a potential profile during lithiation/delithiation at the electrode/electrolyte interface.
Zinc-air batteries and fluorine ion shuttle batteries are worked in the innovative battery research group. In the zinc-air battery team, the new types of oxygen evolution reaction (OER) catalysts are discovered and the higher energy density zinc electrode has been developed. In the brownmillerite-type oxide catalysts, it is confirmed that a superior OER is maintained even in the amorphous state as well as the crystalline state. In the team, the mechanism of this material state independent OER is studied in collaboration with the advanced analytical group. The energy density of the zinc air battery cell seem to have almost achieved the target value in the midterm evaluation of this project, by producing 150 mAh/cm2 zinc electrode. Its cycle degradation, however, must be largely improved. For this purpose, the reaction distribution in the plane and along the depth of the zinc electrode are thoroughly measured by high energy x-ray confocal diffraction technique in SPring-8.
On the other hand, the fluorine ion shuttle battery team successfully demonstrated the fluorine ion shuttle during the battery reaction in the cell, using the composite electrode of nano-metallic particles instead of the nano-metered thick film electrode. This is important progress for practical application. In addition, new soft polymer electrolytes as well as some liquid or solid electrolytes with a better fluorine ion conductivity have been discovered. This polymer electrode may take a role to relax a volume change at the electrode interface during the reaction and improve the cycle degradation. Also, the experimental observation of fluoridation and de-fluoridation reaction at the electrode by the synchrotron x-ray diffraction and the x-ray absorption spectroscopy makes steady progress with the computer simulation in order to reveal the mechanism of the fluoride reaction.
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