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成果報告書詳細
管理番号20190000000583
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(大学共同利用機関法人高エネルギー加速器研究機構)
公開日2019/6/14
報告書年度2018 - 2018
委託先名大学共同利用機関法人高エネルギー加速器研究機構
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Title: Research & Development Initiative for Scientific Innovation of New Generation Batteries 2 (RISING2); (FY2016-FY2020) FY2018 Annual Report, KEK, Japan

Neutron scattering technique is suitable for study of a battery device. SPICA, a special environment neutron powder diffractometer optimized for an operando measurement, was built on BL09 at the Material and Life science Facility (MLF) in Japan Proton Accelerator Complex (J-PARC). We have been developing the neutron scattering technique to observe battery reaction as the structural change of active materials in the battery under its operation and refine the structures of these at the atomic level.

SPICA adopts the data acquisition system called the event method. In the event method, a neutron entering to each detector pixel is recorded as an event. Since this method generates a large amount of event data, the data processing method is a big problem. Our computer system for the data processing has been used for more than seven years since its introduction, and it exceeded the usual life time. So, we introduced a new system, with faster and cheaper computers. In addition, we designed the system using virtualization technology, and reduced the number of computers. The price was about 1/2, and the data reduction performance for operando studies has been greatly improved.

The 5×5×5 mm3 radial collimators were experimentally tested using metal specimens, and showed 4 mm positional resolution. The 2×2×2 mm3 radial collimators are expected to show much higher resolution. These new collimators and the goniometers are fixed in the large flange of the sample chamber, and used to scan a battery position.
Some measurement techniques have also been developed to apply battery studies. The neutron Bragg-edge imaging, SANS technique and cryo-furnace have been progressed.
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