储能科学与技术2025，Vol.14Issue(10)：3697-3704,8.DOI:10.19799/j.cnki.2095-4239.2025.0405
Na-In/Na2S界面层实现稳定的全固态钠电池
Na-In alloy/Na2S interface layer enables stable all-solid-state sodium batteries
摘要
Abstract
All-solid-state sodium batteries hold significant promise for large-scale energy storage due to their potential cost-effectiveness and safety.However,their practical application is limited by the high interfacial impedance between the solid electrolytes and sodium metal anode,as well as the risks of sodium dendrite growth.In this study,an In2S3 interfacial layer is introduced on the Na3.4Zr1.9Zn0.1Si2.2P0.8O12(NZZSPO)solid electrolyte via magnetron sputtering.This layer reacts in situ with the sodium metal anode to form a Na-In alloy/Na2S interlayer at the NZZSPO/Na interface.The Na-In alloy/Na2S interlayer improves the wettability at the solid electrolyte-anode interface,reduces the interfacial impedance,and significantly enhances the ability of the NZZSPO@In2S3 solid electrolyte to suppress sodium dendrite formation.The experimental results show that the critical current density of a symmetric battery based on the NZZSPO@In2S3 solid electrolyte is enhanced significantly,increasing from 2.6 to 8.2 mA/cm2 at 60℃and from 1.6 to 2.2 mA/cm2 at room temperature.Moreover,the Na|In2S3@NZZSPO@In2S3|Na symmetric battery exhibited excellent cycling stability for 2000 h at 60℃and 5 mA/cm2.Even at room temperature,the battery can also operate stably at 1.5 mA/cm2 for 1500 h.Additionally,the Na3V2(PO4)3|NZZSPO@In2S3|Na all-solid-state battery delivers an initial discharge capacity of 108.6 mAh/g at 0.1 C with a Coulombic efficiency of 95.4%and capacity retention of 94.8%after 100 cycles.Even at a higher current density of 1 C,the battery still demonstrates a capacity retention of 88.8%after 1000 cycles.This study provides an in situ approach for constructing a Na-In/Na2S interlayer at the NZZSPO/Na interface,significantly enhancing the ability of the solid electrolyte to suppress sodium dendrite growth and offering a promising strategy for developing high-performance all-solid-state sodium batteries.关键词
全固态钠电池/氧化物固体电解质/硫化铟界面层/钠金属负极Key words
all-solid-state sodium battery/oxide solid electrolyte/In2S3 interface layer/sodium metal anode分类
信息技术与安全科学引用本文复制引用
孙华章,万红利,姚霞银..Na-In/Na2S界面层实现稳定的全固态钠电池[J].储能科学与技术,2025,14(10):3697-3704,8.基金项目
国家自然科学基金(52372244),中国科学院青年创新促进会(Y2021080). （52372244）
