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Low-voltage FIB/SEM Tomography for 3D Microstructure Evolution of LiFePO₄/C Electrode

机译：用于LiFepO _{4 / C电极三维微结构演变的低压FIB / sEm层析成像}

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摘要

This work presents an investigation of the degradation mechanisms that occur in LiFePO4/C battery electrodes during charge/discharge cycling. Impedance spectra were measured on a fresh electrode and an electrode aged by cycling. The spectra were modeled with an equivalent circuit which indicates that both the ionic and electronic pathways in the electrode were negatively affected by the cycling. Focused Ion Beam/Scanning Electron Microscopy (FIB/SEM) tomography of both electrodes shows that cycling causes agglomerations of Carbon black (CB). In addition to this, Low-voltage FIB/SEM revealed non-conductive CB in the aged electrode.

机译：这项工作提出了对LiFePO4 / C电池电极在充电/放电循环过程中发生的降解机理的研究。在新电极和通过循环老化的电极上测量阻抗谱。用等效电路对光谱进行建模，这表明电极中的离子和电子路径都受到循环的负面影响。两个电极的聚焦离子束/扫描电子显微镜（FIB / SEM）层析成像表明，循环会导致炭黑（CB）的团聚。除此之外，低压FIB / SEM还显示了老化电极中的非导电CB。

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作者
Scipioni Roberto; Jørgensen Peter Stanley; Ngo Duc-The; Simonsen Søren Bredmose; Hjelm Johan; Norby Poul; Jensen Søren Højgaard;
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年度 2015
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正文语种 eng
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2. 3D-Analysis of Complex Microstructures - Quantification and Classification by FIB/SEM-Nanotomography [J] . Alexandra Velichko, Frank Mucklich G.I.T. Laboratory Journal Europe . 2007,第9a10期

机译：复杂微观结构的3D分析-通过FIB / SEM-纳米断层扫描进行定量和分类
3. Multi-scale multi-dimensional microstructure imaging of oil shale pyrolysis using X-ray micro-tomography, automated ultra-high resolution SEM, MAPS Mineralogy and FIB-SEM [J] . Saif Tarik, Lin Qingyang, Butcher Alan R., Applied Energy . 2017,第sepa15期

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4. Low-voltage FIB/SEM Tomography for 3D Microstructure Evolution of LiFePO_4/C Electrode [C] . R. Scipioni, P. S. Jorgensen, D. T. Ngo, Meeting of The Electrochemical Society;Symposium on joint general session: batteries and energy storage -and- fuel cells, electrolytes, and energy conversion . 2015

机译：用于LiFePO_4 / C电极3D微观结构演变的低压FIB / SEM层析成像
5. Real-time Investigation of Li Microstructure Formation on Li Anodes for Li Batteries by Solid-state Li NMR, SEM, MRI and X-ray Tomography. [D] . Chang, Hee Jung. 2015

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Low-voltage FIB/SEM Tomography for 3D Microstructure Evolution of LiFePO4/C Electrode

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Low-voltage FIB/SEM Tomography for 3D Microstructure Evolution of LiFePO₄/C Electrode