A Na-rich fluorinated sulfate anti-perovskite with dual doping as solid electrolyte for Na metal solid state batteries
文献类型：期刊论文
| 作者 | Fan, SS; Lei, M; Wu, H; Hu, JL; Yin, CL; Liang, TX; Li, CL |
| 刊名 | ENERGY STORAGE MATERIALS
 |
| 出版日期 | 2020-10-01 |
| 页码 | 87 |
| ISSN号 | 2405-8297 |
| DOI | 10.1016/j.ensm.2020.05.030 |
| 文献子类 | Article |
| 英文摘要 | High-conductivity solid electrolytes are crucial components for the development of Na-based solid state batteries. However the electrolyte structure prototype and corresponding synthesis method are still lacking. The conventional oxide and sulfide electrolytes are precursor-expensive (e.g. Na2S) or energy-intensive in sintering synthesis (e.g. at 1000 degrees C). Here, we propose a novel anti-perovskite solid electrolyte of Na-rich fluorinated sulfate (Na3SO4F) benefiting from Mg and Cl co-doping by solid state reaction from low-cost precursors at moderate temperature (500 degrees C). The tailored dual doping enables an improvement of ionic conductivity by three orders of magnitude close to 10(-4) S cm(-1) at 60 degrees C. The creation of Na vacancies (by aliovalent Mg doping) and lattice expansion (by substituting F sites with larger-sized Cl ions) are responsible for the conductivity upgrade. A Na-Sn/Fe [Fe(CN)(6)](3) solid state battery based on Na2.98Mg0.01SO4F0.95Cl0.05 electrolyte can reversibly run with a first discharge capacity as high as 91.0 mAh g(-1) and a reversible capacity preserved at 77.0 mAh g(-1). This result paves a way to novel anti-perovskite family of fluorinated sulfates as potential alkali metal ion solid electrolytes beyond already reported A(3)OX (A = Li or Na, X = heavy halogen or hydrogenide anions) anti-perovskites. |
| WOS关键词 | LITHIUM ; CONDUCTIVITY ; PHASE |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27713]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Fan, SS,Lei, M,Wu, H,et al. A Na-rich fluorinated sulfate anti-perovskite with dual doping as solid electrolyte for Na metal solid state batteries[J]. ENERGY STORAGE MATERIALS,2020:87. |
| APA | Fan, SS.,Lei, M.,Wu, H.,Hu, JL.,Yin, CL.,...&Li, CL.(2020).A Na-rich fluorinated sulfate anti-perovskite with dual doping as solid electrolyte for Na metal solid state batteries.ENERGY STORAGE MATERIALS,87. |
| MLA | Fan, SS,et al."A Na-rich fluorinated sulfate anti-perovskite with dual doping as solid electrolyte for Na metal solid state batteries".ENERGY STORAGE MATERIALS (2020):87. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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