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Seamless Stitching of Redox Windows to Enable High-Voltage Resilient Solid Sodium Ion Batteries

Energy & Environmental Materials 2023年第6期6卷 445-454页

作者： Xiangdan Zhang Yuanyuan Huang Xiaoyi Hu Ruxin Guo Yongshang Zhang Zhiheng Wu Guoqin Cao Yuran Yu Zhuo Wang Yonglong Shen Guosheng Shao School of Materials Engineering Henan International Joint Laboratory of Rare Earth Composite MaterialsHenan University of EngineeringZhengzhou 451191China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China Zhengzhou Materials Genome Institute Building 2ZhongyuanzhiguXingyang 450100China

While sulfide solid electrolytes such as Na_(11)Sn_(2)PS_(12)can allow fast transport of Na+ions,their utilization in solid sodium ion batteries is rather unsuccessful since they are not electrochemically compatible to both high-voltage cathodes and sodium metal *** this work,we devise an effective approach toward realizing solid sodium ion batteries,using the Na_(11)Sn_(2)PS_(12)electrolyte and slurry-coated NASICON-type Na_(3)MnTi(PO_(4))_(3)@C as high-voltage cathode,highly beneficial for low processing cost and high content/loading of active cathode *** report that through significantly improved integrity of electrolyte-cathode interface,such solid sodium ion batteries can deliver outstanding cycling and rate performance,with a charge voltage resilience up to 4.1 V,a high cathode discharge capacity of 128.7 mAh g^(-1)against the Na_(3)MnTi(PO_(4))_(3)@C in cathode is achieved at 0.05 C,and capacity retention ratio of 82%with a rate of 0.1 C is realized after prolonged cycling at room ***,we demonstrate that such a solid sodium ion battery can even perform at a sub-zero Celsius temperature of-10℃,when the conventional control cell using liquid electrolyte completely fail to *** work is to offer a dependable avenue in engineering next generation of safe solid ion batteries based on highly sustainable and much cheaper material resources.

关键词： C-coated NASICON nanocrystals electrolyte-electrode interface full-cathode capacity Na_(11)Sn_(2)PS_(12) solid sodium-ion battery

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