Lithium acetate modified PU/graphene composites as separator for advanced Li-ion batteries

Micro & nano letters

article

Yong Jiang¹  Cai Lu¹  Xing Liu¹  Yunhong Jiang¹  Yanhuai Ding¹ 

[1] College of Civil Engineering & Mechanics, Xiangtan University;Institute of Rheological Mechanics, Xiangtan University

关键词: graphene;    lithium compounds;    ionic conductivity;    secondary cells;    thermal stability;    electrospinning;    electrochemical electrodes;    Li-ion batteries;    electrospun method;    electrochemical properties;    mechanical properties;    polyurethane separator;    composite separator;    graphene composites;    thermal stability;    as-prepared lithium acetate modified PU;    high ionic conductivity;    temperature 170.0 degC;   

DOI  :  10.1049/mnl.2019.0164

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Here lithium acetate modified PU/graphene composites were prepared from a simple electrospun method. The electrochemical properties, thermal stability, and mechanical properties of polyurethane (PU) separator have been improved remarkably by the addition of lithium acetate and graphene. The composite separator can maintain the dimension size even after being treated at 170°C for 1 h. High ionic conductivity of 2.47 mS·cm −1 can be reached. The results show that the as-prepared lithium acetate modified PU/graphene separator is a promising candidate for commercial polyolefin separators.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND