文献类型：期刊文献

英文题名：Controlling Sodium Dendrite Growth via Grain Boundaries in Na3Zr2Si2PO12 Electrolyte

作者：Gao, Zhonghui[1,2];Bai, Yang[3];Feng, Junrun[4];Yang, Jiayi[5];Liu, Porun[6];Yuan, Haiyang[7];Guan, Xuze[4];Wang, Feng Ryan[4];Huang, Yunhui[5]

机构：[1]Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China;[2]Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China;[3]Max Planck Inst Eisenforsch GmbH, Microstruct Phys & Alloy Design, D-40237 Dusseldorf, Germany;[4]UCL, Dept Chem Engn, Roberts Bldg, Torrington Pl, London WC1E 7JE, England;[5]Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China;[6]Griffith Univ, Ctr Clean Environm & Energy, Gold Coast, QLD 4222, Australia;[7]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：14

期号：20

外文期刊名：ADVANCED ENERGY MATERIALS

收录：;EI(收录号：20240915642707);WOS:【SCI-EXPANDED(收录号:WOS:001177257600001)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 5202780089). The authors acknowledge Diamond Light Source beamtime (SP29192, SP30403, and I09 session). The author would like to thank Dr. Stuart Bartlett in I18 of Diamond light source for his numerous help during the experiment and data analysis. Z.G. acknowledges support from the Chinese Scholarship Council (CSC).

语种：英文

外文关键词：grain boundaries; interface; NASICON; sodium dendrite; solid-state battery

摘要：Na3Zr2Si2PO12(NZSP)-based NASICON solid-state electrolytes (SSEs) show not only competitive ionic conductivity but also high chemical stability in air, holding a great promise for enabling the use of sodium metal anode in solid-state sodium batteries. However, sodium (Na) metal dendrite growth inside SSE always leads to undesirable short-circuiting in battery even no obvious changes in interfacial contact loss and interfacial decomposition during cycling. How to control Na metal dendrite growth and in situ observe the effect of SSE/Na interface change on dendrite growth is quite challenging. Herein, an in situ synchrotron-based X-ray imaging method is developed to systematically investigate the dendrite origin in NZSP-based SSEs. It is find that the dendrite growth intrinsically depends on the grain boundaries (GBs) in NZSP and the NZSP/Na interfacial properties. It is confirmed that Na dendrite infiltration kinetic evolution in NZSP is strongly associated with Na ion/electron conductivity and Young's modulus of GBs. Moreover, the electro-chemo-mechanical phase-field model evaluation demonstrates that the basic reason for Na metal dendrite intrusion into the GBs of SSE is a combination of local polarization potential and the presence of stress formed at GBs.