Ferroelectric-Enhanced Polysulfide Trapping for Lithium-Sulfur Battery Improvement

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• 作者：Keyu Xie ; You You ; Kai Yuan ; Wei Lu ; Kun Zhang ; Fei Xu ; Mao Ye ; Shanming Ke ; Chao Shen ; Xierong Zeng ; Xiaoli Fan and Bingqing Wei
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：February 10, 2017
• 年：2017
• 卷：29
• 期：6
• 全文大小：3292K
• ISSN：1521-4095

文摘

A brand new polysulfide entrapping strategy based on the ferroelectric effect has been demonstrated for the first time. By simply adding the nano-ferroelectrics (BaTiO₃ nanoparticles) into the cathode, the heteropolar polysulfides can be anchored within the cathode due to the internal electric field originated from the spontaneous polarization BaTiO₃ nanoparticles, and thus significantly improving the cycle stability of Li–S batteries.