High-spatial-resolution secondary ion mass spectrometry offers a method for mapping lithium at nanoscale lateral resolution. Practical implementation of this technique offers significant potential for revealing the distribution of Li in many materials with exceptional lateral resolution and elemental sensitivity. Here, two state-of-the-art methods are demonstrated on an aluminium-lithium alloy to visualise nanoscale Li-rich phases by mapping the 7Li+ secondary ion. NanoSIMS 50L analysis with a radio frequency O- plasma ion source enabled visualisation of needle-shaped T1 (Al2CuLi) phases as small as 75 nm in width. A compact time-of-flight secondary ion mass spectrometry detector added to a focused ion beam scanning electron microscope facilitated mapping of the T1 phases down to 45 nm in width using a Ga+ ion beam. Correlation with high resolution electron microscopy confirms the identification of T1 precipitates, their sizes and distribution observed during SIMS mapping.
Nanoscale imaging reveals critical plating and stripping mechanisms in anode-free lithium and sodium solid-state batteries
Autonomous University of Madrid (UAM)(马德里自治大学);Nicolás Cabrera University Institute of Materials Science (INC), UAM(尼古拉斯·卡布雷拉大学材料科学研究院(INC));ALBA Synchrotron Light Facility(阿尔巴同步辐射光源设施);Norwegian University of Science and Technology (NTNU)(挪威科技大学);Fraunhofer Institute for Ceramic Technologies and Systems (IKTS)(弗劳恩霍夫陶瓷技术和系统研究所);Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (CSIC)(马德里材料科学研究所,西班牙国家研究委员会);National Institute of Advanced Industrial Science and Technology (AIST), Research Institute for Energy Efficient Technologies(国立先进工业科学技术研究院,能源效率技术研究所);Condensed Matter Physics Center (IFIMAC), UAM(凝聚态物理中心(IFIMAC))
Long lifetimes of nanoscale skyrmions in lithium-decorated van der Waals ferromagnet Fe$_3$GeTe$_2$
Institute of Theoretical Physics and Astrophysics, University of Kiel(基尔大学理论物理与天体物理研究所);CEMES, Université de Toulouse, CNRS(图卢兹大学CNRS CEMES);Kiel Nano, Surface, and Interface Science (KiNSIS), University of Kiel(基尔大学基尔纳米、表面与界面科学(KiNSIS))
Tritium for Nanoscale Hydrogen Analysis by Atom Probe Tomography
Institute for Applied Materials, Karlsruhe Institute of Technology(应用材料研究所,卡尔斯鲁厄理工学院);Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology(卡尔斯鲁厄纳米微设施(KNMFi),卡尔斯鲁厄理工学院);Institute of Functional Interfaces, Karlsruhe Institute of Technology(功能界面研究所,卡尔斯鲁厄理工学院)
Exploring the nanoscale origin of performance enhancement in Li$_{1.1}$Ni$_{0.35}$Mn$_{0.55}$O$_2$ batteries due to chemical doping
尽管由于它们的每单位成本的高能量密度和降低的环境和道德问题的组合而具有作为用于电动车辆的能量存储材料的显著潜力,但是基于层状Mn氧化物的无Co锂离子电池目前缺乏其含Co对应物的寿命和稳定性。在此,我们证明了通过化学掺杂减小该性能差距,其中Li $_{1.1}$ Ni $_{0.35}$ Mn $_{0.55}$ O $_2$在C/3倍率下实现了159 mAhg $^{-1}$的初始放电容量,并且在150次循环后实现了94.3%的相应容量保持率。随后,我们通过先进的衍射,光谱和电子显微镜技术的组合探索这种改进的纳米级起源,发现优化的掺杂分布导致表征层状Mn氧化物系统的两个组成子相之间的结构和化学相容性得到改善,从而在它们之间形成无障碍的锂离子通道。我们还直接观察到的主体化合物的结构稳定效果的表面附近,使用像差校正扫描透射电子显微镜和集成微分相衬成像。
Mapping reaction mechanism during overcharge of a LiNiO2/Graphite-silicon lithium-ion battery: a correlative operando approach by simultaneous gas analysis and synchrotron scattering techniques
Niobium's intrinsic coherence length and penetration depth revisited using low-energy muon spin spectroscopy and secondary-ion mass spectrometry
TRIUMF(特利昂夫实验室);University of Victoria(维多利亚大学);Virginia Polytechnic Institute and State University(弗吉尼亚理工大学);Pacific Northwest National Laboratory(太平洋西北国家实验室);Thomas Jefferson National Accelerator Facility(托马斯·杰斐逊国家加速器设施);Paul Scherrer Institute(保罗谢尔研究所)
Identification of Solid-Electrolyte Interphase Species by Joint Characterization of Li-ion Battery Chemistry by Mass Spectrometry and Electro-Chemical Reaction Networks
Bakar Institute of Digital Materials for the Planet, University of California at Berkeley(加州大学伯克利分校巴克数字材料星球研究所);Lawrence Berkeley National Laboratory(劳伦斯伯克利国家实验室);Department of Materials Science and Engineering, University of California at Berkeley(加州大学伯克利分校材料科学与工程系);Université de Rouen Normandie, INSA Rouen Normandie, Université de Caen Normandie, ENSICAEN, CNRS, Institut CARMeN UMR 6064(鲁昂诺曼底大学、鲁昂国立应用科学学院、卡昂诺曼底大学、ENSICAEN、法国国家科学研究中心CARMeN联合研究所);TotalEnergies OneTech, TotalEnergies Research & Technology Gonfreville(道达尔能源OneTech、道达尔能源贡夫勒维尔研究与技术部);Saft, Corporate Research(萨博公司企业研究部);International Joint Laboratory-Complex Matrices Molecular Characterization (iC2MC)(国际联合实验室-复杂基体分子表征);TotalEnergies OneTech Belgium(道达尔能源OneTech比利时);TotalEnergies EP Research & Technology(道达尔能源勘探与生产研究与技术部);Universite de Pau et des Pays de l’Adour, CNRS, IPREM(波城与阿杜尔地区大学、法国国家科学研究中心IPREM)
Three-dimensional atomically-resolved analytical imaging with a field ion microscope
原子探针层析成像(APT)有助于阐明纳米级化学变化和物理性质之间的联系,但它具有有限的结构分辨率。场离子显微镜(Field ion microscopy,缩写为FIELD)是APT的前身,它能够在某些晶面上获得原子分辨率,但代价是无法识别元素。我们演示了如何两个商用原子探针仪器,一个具有直线飞行路径,一个装有反射镜,可以用来获取飞行时间质谱数据伴随着一个doppler实验。我们概述了各种实验协议,利用时间和空间的相关性,以最好地区分场蒸发信号的大场电离背景信号,展示了一个简单而有效的数据挖掘策略,以提供这种歧视。我们讨论了剩余的实验挑战,需要解决的,特别是与准确检测和识别的高场电离通量内包含的单个场蒸发离子,有助于一个可重构图像。我们的混合实验方法可以,原则上,表现出真正的原子分辨率与元素的歧视能力,无论是原子探针还是场离子显微镜可以单独完全交付-从而使这种新的方法,在这里广义上称为分析场离子显微镜(aeqs),独特的。
STEM Diffraction Pattern Analysis with Deep Learning Networks
Technical University Darmstadt, Institute of Materials Science, Mechanics of Functional Materials(德累斯顿技术大学材料科学研究所功能材料力学研究组);Philipps-University Marburg, Scientific Centre for Materials Science(马尔堡菲利普斯大学材料科学研究中心)
Quantifying Phase Transformations in Alloying Anodes via In-Situ Liquid Cell Hard X-ray Spectroscopy and Cryogenic Microscopy
Imperial College London(帝国理工学院);Diamond Light Source(钻石光源);Max-Planck Institute for Sustainable Materials(马克斯·普朗克可持续材料研究所);Univ Rouen Normandie, CNRS, INSA Rouen Normandie, Groupe de Physique des Matériaux, UMR 6634(鲁昂诺曼底大学、法国国家科学研究中心、鲁昂诺曼底国立应用科学学院、材料物理研究组)