Neelima Paul
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View article: Tungsten oxide thin films probed by depth-resolved positron annihilation spectroscopy
Tungsten oxide thin films probed by depth-resolved positron annihilation spectroscopy Open
Tungsten oxide (WOx) films grown on tungsten (W) are characterized by depth-resolved Doppler-broadening spectroscopy (DBS) and positron-annihilation lifetime spectroscopy (PALS) as primary analytical methods. The WOx films are prepared on …
View article: Measuring the buried interphase between solid electrolytes and lithium metal using neutrons
Measuring the buried interphase between solid electrolytes and lithium metal using neutrons Open
Neutrons allow one to probe interfaces in next generation high-energy batteries including solid-state Li metal batteries. Understanding these interfaces is key to enabling these batteries to reach their potential.
View article: Lithium Redistribution Mechanism within Silicon-Graphite Electrodes: Multi-Method Approach and Method Validation
Lithium Redistribution Mechanism within Silicon-Graphite Electrodes: Multi-Method Approach and Method Validation Open
Li redistribution processes within Si-graphite composite (SiG) electrodes are analyzed using in situ and operando X-ray diffraction (XRD), ex situ light microscopy (LM), in situ optical microscopy of cross-sectioned full cells (CS-IOM), an…
View article: Efficient Workflows for Detecting Li Depositions in Lithium-Ion Batteries
Efficient Workflows for Detecting Li Depositions in Lithium-Ion Batteries Open
Lithium deposition on anode surfaces can lead to fast capacity degradation and decreased safety properties of Li-ion cells. To avoid the critical aging mechanism of lithium deposition, its detection is essential. We present workflows for t…
View article: Exchange Coupling Due to Spin-Imbalance in Er Magnetic Sublattice within Er/Tb Multilayers
Exchange Coupling Due to Spin-Imbalance in Er Magnetic Sublattice within Er/Tb Multilayers Open
View article: Effects of Polymer Coating Mechanics at Solid‐Electrolyte Interphase for Stabilizing Lithium Metal Anodes
Effects of Polymer Coating Mechanics at Solid‐Electrolyte Interphase for Stabilizing Lithium Metal Anodes Open
Lithium metal batteries are next‐generation energy storage devices that rely on the stable electrodeposition of lithium metal during the charging process. The major challenge associated with this battery chemistry is related to the uneven …
View article: Real-time observation of nucleation and growth of Au on CdSe quantum dot templates
Real-time observation of nucleation and growth of Au on CdSe quantum dot templates Open
View article: Impact of Silicon Content within Silicon-Graphite Anodes on Performance and Li Concentration Profiles of Li-Ion Cells using Neutron Depth Profiling
Impact of Silicon Content within Silicon-Graphite Anodes on Performance and Li Concentration Profiles of Li-Ion Cells using Neutron Depth Profiling Open
Due to its high specific capacity, silicon is a promising candidate to substitute conventional graphite as anode material in lithium-ion batteries. However, pure silicon-based anodes suffer from poor capacity retention, mainly due to a lar…
View article: CSD 1949648: Experimental Crystal Structure Determination
CSD 1949648: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 1949649: Experimental Crystal Structure Determination
CSD 1949649: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Surface distortion of Fe dot-decorated TiO2 nanotubular templates using time-of-flight grazing incidence small angle scattering
Surface distortion of Fe dot-decorated TiO2 nanotubular templates using time-of-flight grazing incidence small angle scattering Open
Physical properties of nanoclusters, nanostructures and self-assembled nanodots, which in turn are concomitantly dependent upon the morphological properties, can be modulated for functional purposes. Here, in this article, magnetic nanodot…
View article: Low‐Temperature Charging and Aging Mechanisms of Si/C Composite Anodes in Li‐Ion Batteries: An Operando Neutron Scattering Study
Low‐Temperature Charging and Aging Mechanisms of Si/C Composite Anodes in Li‐Ion Batteries: An Operando Neutron Scattering Study Open
The addition of Si compounds to graphite anodes has become an attractive way of increasing the practical specific energies in Li‐ion cells. Previous studies involving Si/C anodes lacked direct insight into the processes occurring in full c…
View article: Topologically stable helices in exchange coupled rare-earth/rare-earth multilayer with superspin-glass like ordering
Topologically stable helices in exchange coupled rare-earth/rare-earth multilayer with superspin-glass like ordering Open
Existence of 2 π -planar domain walls (DWs) are often reported for transition metal-rare-earth (TM/RE) layered systems. The magnetization process of such two-dimensional randomly anisotropical system in the form of 2 π -DWs is directly cor…
View article: Contrast Matched SANS for Observing SEI and Pore Clogging in Silicon-Graphite Anodes
Contrast Matched SANS for Observing SEI and Pore Clogging in Silicon-Graphite Anodes Open
Silicon-graphite (SiG) electrodes are attractive candidates as anodes for Li-ion batteries due to their high theoretical specific capacity. However, repeated lithiation/delithiation during charge/discharge cycling causes significant morpho…
View article: Linear and Nonlinear Aging of Lithium-Ion Cells Investigated by Electrochemical Analysis and In-Situ Neutron Diffraction
Linear and Nonlinear Aging of Lithium-Ion Cells Investigated by Electrochemical Analysis and In-Situ Neutron Diffraction Open
In this paper, we present an aging study of commercial 18650-type C/LiNi0.33Mn0.33Co0.33O2 lithium-ion cells. The test procedure comprises varying charging currents, discharging currents and resting times between cycles. The cells show a n…
View article: Structural and magnetic properties of cobalt iron disulfide (CoxFe1−xS2) nanocrystals
Structural and magnetic properties of cobalt iron disulfide (CoxFe1−xS2) nanocrystals Open
View article: Nano-metric self-diffusion of Fe: effect of grain size
Nano-metric self-diffusion of Fe: effect of grain size Open
Changes in the relative56Fe/57Fe isotope fractions due to Fe self-diffusion, that is active at the grain boundaries of different dimensions, can be monitored by neutron reflectometry with atomic length scale precision.
View article: Realizing topological stability of magnetic helices in exchange-coupled multilayers for all-spin-based system
Realizing topological stability of magnetic helices in exchange-coupled multilayers for all-spin-based system Open
View article: Self-organized in-plane ordering of nanostructures at epitaxial ferroelectric–ferromagnetic interfaces
Self-organized in-plane ordering of nanostructures at epitaxial ferroelectric–ferromagnetic interfaces Open
The formation of self-assembled structures is of great interest in the field of ferroelectric (FE)–ferromagnetic (FM) oxide interfaces with novel functionalities driven by the combination of strain relaxation and diffusion/segregation proc…
View article: Templating growth of gold nanostructures with a CdSe quantum dot array
Templating growth of gold nanostructures with a CdSe quantum dot array Open
The controlled gold sputtering on quantum dot arrays forms gold nanostructures exclusively on top of quantum dots by self-assembly. A real time observation of the gold nanostructure growth is enabled with grazing incidence small-angle X-ra…