氧调节原生负极-固态电解质界面层助力高稳定性固态钠金属电池  

Oxygen-regulated spontaneous solid electrolyte interphase enabling ultra-stable solid-state Na metal batteries

作　　者：曹克爽 夏宇凡 李皓盛 黄慧琴 Sikandar Iqbal Muhammad Yousaf 徐斌 孙文平 严密 潘洪革 姜银珠 Keshuang Cao;Yufan Xia;Haosheng Li;Huiqin Huang;Sikandar Iqbal;Muhammad Yousaf;Ben Bin Xu;Wenping Sun;Mi Yan;Hongge Pan;Yinzhu Jiang(School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China;ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311200,China;Mechanical and Construction Engineering,Faculty of Engineering and Environment,Northumbria University,Newcastle upon Tyne NE18ST,UK;Institute of Science and Technology for New Energy,Xi’an Technological University,Xi’an 710021,China;State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou 014030,China)

机构地区：[1]School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China [2]ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311200,China [3]Mechanical and Construction Engineering,Faculty of Engineering and Environment,Northumbria University,Newcastle upon Tyne NE18ST,UK [4]Institute of Science and Technology for New Energy,Xi’an Technological University,Xi’an 710021,China [5]State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou 014030,China

出　　处：《Science Bulletin》2024年第1期49-58,共10页科学通报（英文版）

基　　金：Zhejiang Provincial Natural Science Foundation of China(LZ23B030003);the National Key R&D Program(2022YFB2502000);the National Key R&D Program(2022YFB2502000);the Fundamental Research Funds for the Central Universities(2021FZZX001-09)。

摘　　要：Solid-state sodium metal batteries utilizing inorganic solid electrolytes(SEs)hold immense potentials such as intrinsical safety,high energy density,and environmental sustainability.However,the interfacial inhomogeneity/instability at the anode-SE interface usually triggers the penetration of sodium dendrites into the electrolyte,leading to short circuit and battery failure.Herein,confronting with the original nonuniform and high-resistance solid electrolyte interphase(SEI)at the Na-Na_(3)Zr_(2)Si_(2)PO_(12)interface,an oxygen-regulated SEI innovative approach is proposed to enhance the cycling stability of anode-SEs interface,through a spontaneous reaction between the metallic sodium(containing trace amounts of oxygen)and the Na_(3)Zr_(2)Si_(2)POi_(2)SE.The oxygen-regulated spontaneous SEI is thin,uniform,and kinetically stable to facilitate homogenous interfacial Na^+transportation,Benefitting from the optimized SEI,the assembled symmetric cell exhibits an ultra-stable sodium plating/stripping cycle for over 6600 h under a practical capacity of 3 mAh cm^(-2).Qua si-sol id-state batteries with Na_(3)V_(2)(PO_(4))_(3)cathode deliver excellent cyclability over 500 cycles at a rate of 0.5 C(1 C=117 mA cm^(-2))with a high capacity retention of95.4%.This oxygen-regulated SEI strategy may offer a potential avenue for the future development of high-energy-density solid-state metal batteries.

关 键 词：Na metal anode Solid-state batteries NASICON Anode interface Solid electrolyte interphase 

分 类 号：O646.1[理学—物理化学] TM912[理学—化学]