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Showing 1 to 10 of 10 for “"Li-Intercalation"”.
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First-principles investigation of Li intercalation kinetics in phospho-olivines
… broadly on characterizing and understanding the Li intercalation mechanism in phospho-olivines, namely LiFePO₄ and Li(Fe,Mn)PO₄, using first-principles calculations. Currently Li-ion battery technology is critically relied upon for the operation of electrified vehicles, but further improvements …
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Deep understanding of degradation in lithium ion batteries through experimental and first-principles study
"The growing interests in Lithium-ion Batteries (LIBs) have significantly accelerated the development of active materials. However, the key challenge is that electrode materials suffer from degradation, which include transition metal dissolution, solid electrolyte interphase (SEI) layer formation, …
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Phase-Engineered Field-Effect Transistors Based on Two-Dimensional Transition Metal Dichalcogenides
… can exist in either a semiconducting or metallic phase. Semiconducting TMDC based field-effect transistors (FETs) are considered promising candidates for post-Si electronics owing to their ultra-thin body enabling ultimate scalability. However, the large contact resistance at the metal/TMDC …
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Design of novel lithium storage materials with a polyanionic framework
Lithium ion batteries for large-scale applications demand a strict safety standard from a cathode material during operating cycles. Lithium manganese borate (LiMnBO₃) that crystallizes into a hexagonal or monoclinic framework is one prominent polyanionic compound to cope with such requirement since …
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Three dimensional characterization of failure evolution of tin and silicon in lithium ion battery electrodes
High capacity lithium ion (Li+) host materials, such as silicon (Si) and tin (Sn), serve as potential replacements to graphite in composite battery electrodes because of their higher gravimetric capacity when reacted with lithium, thus providing higher energy and power. Sn has a theoretical …
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The effect of temperature on phase transformation mechanisms in electrodes for Li-ion batteries
… transformation mechanisms in electrodes for lithium-ion batteries (LIBs) is an important but – to date – only less studied subject in battery research. In real-life applications, LIBs usually function at non-ambient conditions and especially increased temperatures give rise to safety …
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Understanding the Chemistries of Ni-rich Layered Oxide Materials for Applications in Lithium Batteries and Catalysis
… improved battery materials, especially for applications in portable electronic devices and electric vehicles. Lithium batteries are at the frontier of energy storage. Due to geopolitical concerns, there is a growing need to understand the chemistries of Co-free, Ni-rich layered oxide materials …
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Hierarchical Carbon Structures for Advanced High Areal Capacity Lithium-Ion Battery Electrodes
… vehicles calls for a matching development in lithium-ion batteries (LIBs) that offer high power density, energy density, and long cycle life. However, LIBs based on traditional layered metal oxide cathodes and graphite anodes are quickly approaching their specific energy limits. The …
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Operando investigations of mechanical changes in lithium-ion batteries
Li-ion batteries are increasingly present in modern life. They principally power compact, handheld devices and electric vehicles. Mechanical changes are always occurring within batteries due to expansion and contraction of the active materials during lithiation and delithiation, degradation of the …
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Modifizierung der Werkstoffe auf Basis von Magnesiumsilicid mit Hilfe der Spark-Plasma-Synthese
… ausgewählter Mg2Si-basierter Materialien innerhalb dieser Arbeit zeigen neue Wege für die Anwendung der SPS-Technik in der Grundlagen- als auch angewandten Forschung und liefern entscheidendes, neues Material für die Charakterisierung der Li-Verbindungen Li2xMg2-xX (X = Si, Ge, Sn, …