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成果報告書詳細
管理番号20170000000227
タイトル*平成28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2017/11/14
報告書年度2016 - 2016
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
部署名スマートコミュニティ部
和文要約
英文要約Research & Development Initiative for Scientific Innovation of New Generation Batteries 2 (RISING2); (FY2016-FY2018) FY2016 Annual Report, KEK, Japan

Neutron scattering technique is suitable for study of a battery-device. SPICA, a special environment neutron powder diffractometer which 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 carrying out the development of neutron scattering technique to observe the 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. A technique of observing a battery-reaction depending on a position of a real cell has been developing. A goniometer was installed on SPICA to adjust neturon irradiation area of a sample (battery cell). And it was used to determine structure and composition of active materials in both electrodes, anode and cathode. A radial collimator which limits a field of view (sample) from detectors was sculpted by a three-dimensional printer. In this year, two type radial collimators for field volume of 10×10×10 mm3 and 5×5×5 mm3 were made. New analysis methods (Automatic refinements and PDF) have been developing. The new automatic refinements procedure was added to Z-Rietveld for Mac OS. It worked and sequentially determined structures of active materials in practical cell from large number of operando diffraction data. The “nvaSq” script to make S(Q) data on BL21, NOVA was ported to SPICA’s data reduction system. It successfully reduces corrected diffraction data (I(Q)) of SiO2 glass and converted it into S(Q) data on SPICA. We also started some development to expand observing d spacing range. Firstly, a commissioning of the small angle scattering bank has just begun to investigate a long-range structure like stacking fault in electrode materials. The basic instrument parameters were fixed by the measurements of the standard material, Silver behenate. Secondly, a new electronic system of imaging detector has been improved to increase the data transportation speed. This improvement may potentially conduce to shortening time of measurement of barrage-edge imaging. SPICA provided a cryo-furnace as a temperature controller for the investigation of materials for innovative batteries. Some diffraction patterns of a fluoride ionic conductor were successfully collected using this instrument. It was indecated that the lattice parameters were increased with increasing temperatures.
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