烧结
杂质
电解质
离子电导率
兴奋剂
电导率
快离子导体
介电谱
陶瓷
电化学
化学工程
材料科学
纳米技术
矿物学
无机化学
化学
冶金
物理化学
电极
光电子学
有机化学
工程类
作者
Se Woon Jung,Ji Eun Wang,Dong Gyu Kim,Ho Jin,Do Kyung Kim,Dong Jun Kim
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2022-07-25
卷期号:5 (10): 13894-13902
被引量:8
标识
DOI:10.1021/acsanm.2c01928
摘要
Along with the widening application and growing market size of energy storage devices, the development of cost-effective rechargeable batteries with a high level of operational safety has become a major challenge. To this end, an all-solid-state battery (ASSB), which is composed of a thin film instead of a liquid, is an attractive candidate. In this study, we investigated a facile method for preparing sodium superionic conductor structured Na1+xZr2SixP3–xO12 (0 ≤ x ≤ 3, NZSP). Various attempts were made to improve the sinterability of NZSP, but the results are still unsatisfactory. We employed the reaction sintering method so that the phase formation and densification proceeded simultaneously, resulting in the densification of NZSP with minimal impurities. Furthermore, we successfully substituted rare-earth elements (REs) into the Zr site of the NZSP to tune its structural properties in the nanoscale and improve its ionic conductivity. Electrochemical impedance spectroscopy results confirmed the improvement of the ionic conductivity of both the pristine NZSP and the RE-doped variant, indicating the effectiveness of reaction sintering. When reaction sintering and RE substitution were employed together, La-doped NZSP was an attractive solid electrolyte for application in ASSBs. Our results highlight the effectiveness of reaction sintering for obtaining an impurity-free and highly dense multicomponent compound.
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