纤维素纳米纤维和LATP修饰的PEO固体电解质的制备及其性能研究  

Preparation and performance study of cellulose nanofibers and LATP-modified PEO solid electrolyte

作　　者：嵇晨豪 张汉泽 王欣欣 杨雅晴 黄锋林 Ji Chenhao;Zhang Hanze;Wang Xinxin;Yang Yaqing;Huang Fengling(Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi 214122)

机构地区：[1]江南大学教育部生态纺织品重点实验室,无锡214122

出　　处：《化工新型材料》2025年第1期115-119,124,共6页New Chemical Materials

基　　金：江苏省重点研发计划(BE2017060、BE2016707)。

摘　　要：采用静电纺丝制备了醋酸纤维素纳米纤维膜,并进行去乙酰化处理和引入Li_(1.4)Al_(0.4)Ti_(1.6)(PO_(4))_(3)无机颗粒对聚氧化乙烯(PEO)电解质进行改性,可提高离子电导率,锂离子迁移数以及锂硫电池的循环稳定性。结果表明:经纤维素纳米纤维和LATP改性的PEO固体电解质在60℃下离子电导率达3.43×10^(-4)S/cm,锂离子迁移数达0.44,高于PEO固体电解质。改性PEO固体电解质在60℃,0.1C下初始放电比容量为844.13mAh/g,且达到了50圈循环。Cellulose acetate nanofiber membranes were prepared by electrospinning,followed by deacetylation treatment,and Li_(1.4)Al_(0.4)Ti_(1.6)(PO_(4))_(3)inorganic particles were introduced to modify the polyethylene oxide(PEO)electrolyte,which could improve ionic conductivity,lithium-ion migration number,and cycling stability of lithium-sulfur batteries.The results showed that the ionic conductivity of the cellulose nanofibers and LATP-modified PEO solid electrolyte reached 3.43×10^(-4)S/cm at 60℃,and the lithium-ion migration number reached 0.44,which were higher than those of the unmodified PEO solid electrolyte.The modified PEO solid electrolyte exhibited an initial discharge-specific capacity of 844.13mAh/g at 60℃and 0.1C,and achieved 50 cycles.

关 键 词：静电纺丝 PEO固体电解质 再生纤维素纳米纤维 锂硫电池 

分 类 号：TQ152[化学工程—电化学工业] TM53[电气工程—电器]