基于钠氧氯化物的固态钠电正极界面调控研究

doi:10.15541/jim20260319

无机材料学报

• 研究论文 • 下一篇

基于钠氧氯化物的固态钠电正极界面调控研究

孙畅¹, 贾亚亚¹, 韩翔宇¹, 张晓妍², 李高盟¹, 刘兵¹, 朱国华¹, 刘山^1,2

1.华北理工大学化学工程学院,唐山 063000;
2.华北理工大学冶金与能源学院,唐山 063000

收稿日期:2026-07-26 修回日期:2026-08-20
通讯作者: 刘山, 教授. E-mail: sliu@ncst.edu.cn; 贾亚亚, 讲师. E-mail: jiayaya@ncst.edu.cn
作者简介:孙畅(2001-), 女, 硕士研究生. E-mail: sunchang@stu.ncst.edu.cn
基金资助:
京津冀基础研究合作专项项目(B2024209048); 天津市自然科学基金项目(24JCZXJC00250); 河北省教育厅基本科研项目(JJC2024003); 河北省高等学校科学研究项目(BJ2026128, QN2026373); 省属高校基本科研业务费项目 (JQN2023023); 河北省自然科学基金(E2025209075)

Cathode Interface Regulation in Solid-state Sodium Batteries Based on Sodium Oxychloride

SUN Chang¹, JIA Yaya¹, HAN Xiangyu¹, ZHANG Xiaoyan², LI Gaomeng¹, LIU Bing¹, ZHU Guohua¹, LIU Shan^1,2

1. School of Chemical Engineering, North China University of Science and Technology, Tangshan 063000, China;
2. School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063000, China

Received:2026-07-26 Revised:2026-08-20
Contact: LIU Shan, professor. E-mail: sliu@ncst.edu.cn; JIA Yaya, lecturer. E-mail: jiayaya@ncst.edu.cn
About author:SUN Chang (2001-), female, Master candidate. E-mail: sunchang@stu.ncst.edu.cn
Supported by:
The Beijing-Tianjin-Hebei Basic Research Cooperation Special Project (B2024209048); Natural Science Foundation of Tianjin, China (24JCZXJC00250); The Basic Scientific Research Project of Hebei Provincial Department of Education (JJC2024003); The Project of Hebei Provincial University Scientific Research (BJ2026128, QN2026373); The Basic Research Funding for Universities (JQN2023023); Natural Science Foundation of Hebei Province (E2025209075)

摘要/Abstract

摘要： 固态电解质Na₃Zr₂Si₂PO₁₂(NZSP)凭借其独特的三维开放骨架结构,表现出较高的室温离子电导率、宽电化学稳定窗口及优异的化学稳定性,是固态钠离子电池领域最具应用前景的固态电解质材料之一。然而,NZSP与正极材料之间存在界面接触不良和界面阻抗较大等问题。本研究采用机械球磨法制备了非晶态钠氧氯化物Na-Ta-Cl-O(NTCO),并将其作为NZSP与正极材料间修饰层,旨在提升固态钠离子电池的正极界面传输动力学与电化学性能。实验结果表明,NTCO能够在NZSP与Na₃V₂(PO₄)₃(NVP)之间形成均匀、连续的离子传输界面,有效改善界面接触并促进Na⁺快速传输。经NTCO修饰后,极化电阻(R_p)由2475 Ω·cm²降低至1038 Ω·cm²。在0.5C倍率下,组装的固态电池Na|NZSP@NTCO|NVP,在100次循环后容量保持率仍然可以达到81.2%。综上所述,钠氧氯化物可作为NZSP/NVP界面的有效修饰材料,显著降低界面阻力,提升界面稳定性。

关键词: Na-Ta-Cl-O, Na₃Zr₂Si₂PO₁₂, 界面改性, 固态钠离子电池, Na⁺离子传输

Abstract: Na₃Zr₂Si₂PO₁₂ (NZSP), featuring a unique three-dimensional open-framework structure, exhibits high room-temperature ionic conductivity, a wide electrochemical stability window, and excellent chemical stability, making it one of the most promising solid electrolytes for solid-state sodium-ion batteries. However, poor interfacial contact and high interfacial resistance between NZSP and cathode materials remain critical challenges. In this work, an amorphous sodium oxychloride, Na-Ta-Cl-O (NTCO), was prepared by mechanical ball milling and employed as an interfacial modification layer between NZSP and the cathode to improve interfacial Na⁺ transport kinetics and electrochemical performance. The results show that NTCO forms a uniform and continuous ion-conducting interface between NZSP and Na₃V₂(PO₄)₃ (NVP), effectively improving interfacial contact and facilitating rapid Na⁺ transport. After NTCO modification, the polarization resistance (Rp) decreased from 2475 Ω·cm² to 1038 Ω·cm². At a rate of 0.5C, the assembled solid-state cell exhibited a capacity retention of 81.2% after 100 cycles. These results demonstrate that sodium oxychloride can serve as an effective interfacial modification material for the NZSP/NVP interface, significantly reducing interfacial resistance and enhancing interfacial stability.

Key words: Na-Ta-Cl-O, Na₃Zr₂Si₂PO₁₂, interfacial engineering, solid-state sodium-ion battery, Na⁺ transport

中图分类号:

TM911

孙畅, 贾亚亚, 韩翔宇, 张晓妍, 李高盟, 刘兵, 朱国华, 刘山. 基于钠氧氯化物的固态钠电正极界面调控研究[J]. 无机材料学报, DOI: 10.15541/jim20260319.

SUN Chang, JIA Yaya, HAN Xiangyu, ZHANG Xiaoyan, LI Gaomeng, LIU Bing, ZHU Guohua, LIU Shan. Cathode Interface Regulation in Solid-state Sodium Batteries Based on Sodium Oxychloride[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20260319.

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基于钠氧氯化物的固态钠电正极界面调控研究

Cathode Interface Regulation in Solid-state Sodium Batteries Based on Sodium Oxychloride

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