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Effect of Temperature for Reduction of Macro-Porous Silica to Silicon as Anode Material of LIBs

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A macro-porous silicon-based anode is in demand to reduce the stresses induced by large volume changes and prevent cracking and pulverization of the silicon anode. Macro-porous silica was prepared with TMOS and PMMA nano-spherical beads in a previous study. The macro-porous silica prepared in the present study was reduced to silicon with aluminum fine powder. The mixture slurry, which contains macro-porous silica and aluminum powders, was treated thermally in the range of 700~900°C for 5 h under an argon atmosphere. The reduced samples were analyzed by scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The reduction of macro-porous silica to silicon increased with increasing temperature.
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Keywords: Macro-Porous Silica; Macro-Porous Silicon; Reduction by Aluminum Fine Powder

Document Type: Research Article

Affiliations: 1: School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Korea 2: Youngchang Chemical Co. Ltd., Seongju-gun, Gyeongbuk, 40046, Korea

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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