大牛Yitai Qian最新锂离子电池力作（EES，2015年10月04日）？题目：A low temperature molten salt process for aluminothermic reduction of silicon oxides to crystalline Si for Li-ion batteries 作者：Ning Lin, Ying Han, Jie Zhou, Kailong Zhang, Tianjun Xu, Yongchun Zhu* and Yitai Qian* ? ?? ?? ?Department of Chemistry, Hefei National Laboratory for Physical Science at Micro-scale, University of Science and Technology of China, Hefei, Anhui 230026, ? ?? ?? ?P. R. China. E-mail: ytqian@ustc.edu.cn, ychzhu@ustc.edu.cn （院士出马，一个顶俩） ? ?? ?? ? 摘要：A low temperature molten salt process is developed to prepare crystalline Si nanoparticles through the reduction of micro-sized high silicon zeolite by metallic Al (or Mg) in molten AlCl3. The reaction can be initiated at 200 ℃, and the yield is about 40%. As the reaction temperature increases to 250 ℃, the yield can reach about 75%. When the prepared Si was used as an anode for Li-ion batteries, reversible capacities of 2663 mAh g-1 at 0.5 A g-1 after 50 cycles and 870 mAh g-1 at 3 A g-1 after 1000 cycles can be obtained. Similarly, this synthetic strategy is employed to synthesize Si nanoparticles starting from various abundant raw materials including SiO2 powder, kieselguhr, fiberglass, and even the natural mineral of albite. 1.jpg查看更多1个回答 . 11人已关注
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