TEM in situ lithiation of tin nanoneedles for battery applications
نویسندگان
چکیده
منابع مشابه
Lithiation of Tin Nanoneedles Investigated by in-situ TEM
In the search for a better anode material for lithium-ion batteries (LIBs), elemental Sn has generated considerable interest due to its high theoretical specific capacity of 994 mAh/g. However, neither bulk material nor continuous films of Sn are useful in practice because the large volume change that occurs during lithiation and delithiation causes mechanical failure of the electrode [1]. Arra...
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In this work, we study the lithiation behaviours of both porous silicon (Si) nanoparticles and porous Si nanowires by in situ and ex situ transmission electron microscopy (TEM) and compare them with solid Si nanoparticles and nanowires. The in situ TEM observation reveals that the critical fracture diameter of porous Si particles reaches up to 1.52 μm, which is much larger than the previously r...
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1. Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU), Albert-Einstein-Allee 11, 89081 Ulm, Germany. 2. Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-vonHelmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. 3. Karlsruhe Institute of Technology, Karlsruhe Nano Micro Facility (KNMF), Hermann-von-HelmholtzPlatz 1, 76344 Eggenstein-Leopoldsh...
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The incorporation of nanostructured carbon has been recently reported as an effective approach to improve the cycling stability when Si is used as high-capacity anodes for the next generation Li-ion battery. However, the mechanism of such notable improvement remains unclear. Herein, we report in-situ transmission electron microscopy (TEM) studies to directly observe the dynamic electrochemical ...
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To utilize high-capacity Si anodes in next-generation Li-ion batteries, the physical and chemical transformations during the Li-Si reaction must be better understood. Here, in situ transmission electron microscopy is used to observe the lithiation/delithiation of amorphous Si nanospheres; amorphous Si is an important anode material that has been less studied than crystalline Si. Unexpectedly, t...
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ژورنال
عنوان ژورنال: Journal of Materials Science
سال: 2015
ISSN: 0022-2461,1573-4803
DOI: 10.1007/s10853-015-9318-0