储能科学与技术2025，Vol.14Issue(12)：4441-4449,9.DOI:10.19799/j.cnki.2095-4239.2025.0528
共价三嗪框架材料诱导稳定的Na/NASICON界面
Covalent triazine framework enables a stable Na/NASICON interface
摘要
Abstract
NASICON-type solid electrolyte Na3Zr2Si2PO12(NZSP)is a promising candidate for high-energy-density solid-state sodium-ion batteries due to its high ionic conductivity,excellent chemical stability,and wide electrochemical window.However,the rigid interface between NZSP and the sodium anode often results in elevated interfacial resistance and uneven Na deposition/stripping.To address this challenge,a covalent triazine framework(CTF)was prepared and applied as an interfacial modification layer on NZSP.The CTF exhibits strong electron-insulating properties,preventing electron leakage that could trigger internal short circuits,while its soft interfacial nature reduces impedance.Density functional theory calculations indicate that electronegative sites on the CTF surface facilitate Na+migration and promote uniform Na deposition/stripping,effectively suppressing Na dendrite formation within the electrolyte.Experimental results show that the critical current density of the modified sodium symmetric cell increases to 0.5 mA/cm2,enabling stable cycling for 200 h at 0.1 mA/cm2.The assembled Na||Na3V2(PO4)3/C cell demonstrates enhanced rate capability and long-term cycling stability.Introducing a CTF modification layer on the NZSP electrolyte surface effectively stabilizes the electrode/electrolyte interface,offering a practical interface-engineering strategy for high-performance solid-state sodium metal batteries.关键词
钠离子电池/固态电解质/共价三嗪框架/NASICON/界面修饰Key words
sodium-ion batteries/solid-state electrolytes/covalent triazine framework/NASICON/interface retouching分类
信息技术与安全科学引用本文复制引用
LI Zichen,SUN Yuting,ZHANG Huapu,ZHANG Mengdi,YAN Yingchun,ZHANG Weimin,MENG Xiuxia,YANG Naitao..共价三嗪框架材料诱导稳定的Na/NASICON界面[J].储能科学与技术,2025,14(12):4441-4449,9.基金项目
国家自然科学基金(21978157,21776175) （21978157,21776175）
山东省自然科学基金(ZR2022QB147,ZR2023MB093). （ZR2022QB147,ZR2023MB093）
