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