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A phase inversion based sponge-like polysulfonamide/SiO_2 composite separator for high performance lithium-ion batteries

查看全文 作　　者：Xiao [1,2]Wang;Gaojie [2]Xu;Qingfu [1,2]Wang;Chenglong [1,2]Lu;Chengzhong [1]Zong;Jianjun [2]Zhang;Liping [2]Yue;Guanglei [2]Cui 高影响力作者 机构地区：[1]School of Polymer Science and Engineering,Qingdao University of Science and Technology;[2]Qingdao Industrial Energy Storage Research Institute,Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences高影响力机构 出　　处：《Chinese Journal of Chemical Engineering》索引2018年第26卷第6期,共8页高影响力期刊 基　　金：Supported by the funding from '135' Projects Fund of CAS-QIBEBT Director Innovation Foundation;Think-Tank Mutual Fund of Qingdao Energy Storage Industry Scientific Research;Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology;the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA09010105);National Natural Science Foundation of China(51502319);Shandong Provincial Natural Science Foundation(ZR2016BQ18) 摘　　要：In this work,a sponge-like polysulfonamide(PSA)/SiO_2 composite membrane is unprecedentedly prepared by the phase inversion method,and successfully demonstrated as a novel separator of lithium-ion batteries(LIBs).Compared to the commercial polypropylene(PP) separator,the sponge-like PSA/SiO_2 composite possesses better physical and electrochemical properties,such as higher porosity,ionic conductivity,thermal stability and flame retarding ability.The LiCoO_2/Li half-cells using the sponge-like composite separator demonstrate superior rate capability and cyclability over those using the commercial PP separator.Moreover,the sponge-like composite separator can ensure the normal operation of LiCoO_2/Li half-cell at an extremely high temperature of 90 °C,while the commercial PP separator cannot.All these encouraging results suggest that this phase inversion based sponge-like PSA/SiO_2 composite separator is really a promising separator for high performance LIBs. 关 键 词：锂离子电池 海绵 合成 隔板 倒置 电气化学 热稳定性 PSA
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