无机材料学报2026，Vol.41Issue(5)：611-618,中插3,9.DOI:10.15541/jim20250283
Al2O3/P2O5摩尔比对动力锂电池封接玻璃结构与性能的影响
Effect of Al2O3/P2O5 Molar Ratio on Structure and Properties of Sealing Glass for Power Lithium Batteries
摘要
Abstract
This study presents a new kind of sealing glass based on P2O5-Al2O3-B2O3-R2O-NaF system,which exhibits a high coefficient of thermal expansion(CTE)suitable for sealing power lithium batteries.The effects of Al2O3/P2O5 molar ratio on the structure,thermal properties,sealing performance and chemical stability of the sealing glass were characterized.The results show that as the Al2O3/P2O5 molar ratio increases from 0.35 to 0.76,the number of P-O-P bridge oxygen bonds within the glass structure gradually decreases,and the content of[AlO4]tetrahedra initially increases and then decreases,leading to an initial increase in the compactness of the phosphate glass network structure,followed by a decrease.Correspondingly,the CTE of the glass firstly decreases from 164.5×10-7℃-1 to 160.0×10-7℃-1,and then gradually increases to 175.9×10-7℃-1,while the sealing temperature initially rises to 588℃and subsequently falls to 549℃.The acid resistance of the glass also follows this trend,initially improving and then deteriorating.The phosphate sealing glass prepared in this study displays proper balance among high CTE,low sealing temperature and excellent chemical stability,providing theoretical and technical support for the development of a low-temperature sealing process for the electrodes of power lithium batteries.关键词
动力锂电池/磷酸盐玻璃/高热膨胀系数/封接温度/耐酸性Key words
power lithium battery/phosphate glass/high thermal expansion coefficient/sealing temperature/acid resistance分类
化学化工引用本文复制引用
王巍巍,曹欣,刘俊飞,杨小菲,韩娜,李幸聪,石丽芬..Al2O3/P2O5摩尔比对动力锂电池封接玻璃结构与性能的影响[J].无机材料学报,2026,41(5):611-618,中插3,9.基金项目
国家重点研发计划(2021YFB3501103) （2021YFB3501103）
安徽省自然科学基金(2408085ME138) （2408085ME138）
安徽省重点研究与开发计划(2022a05020026)National Key R&D Program of China(2021YFB3501103) （2022a05020026）
Natural Science Foundation of Anhui Province(2408085ME138) （2408085ME138）
Anhui Provincial Key R&D Program(2022a05020026) （2022a05020026）
