A sandwich‐structured separator based on in situ coated polyaniline on polypropylene membrane for improving the electrolyte wettability in lithium‐ion batteries. (13th August 2019)

• Record Type: Journal Article
• Authors: Hao, ZhenDong; Wu, CongRong; Zhang, QianQian; Liu, JingBing; Wang, Hao
• Is Part Of: International journal of energy research. Volume 43:Number 14(2019)
• Page Start: 8049
• Page End: 8056
• Publication Date: 2019-08-13
• Subjects: in situ polymerization -- lithium‐ion batteries -- polyaniline -- separators; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.4796
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: Designing separators with excellent electrolyte wettability is of great significance to improve the electrochemical behavior of lithium‐ion batteries (LIBs). Herein, we develop a sandwich‐structured separator by facile in situ polymerization of polyaniline (PANI) on the both sides of polypropylene (PP) separator. The introduction of PANI coating improves the electrolyte wettability of the PP separators. Consequently, the cells equipped with this sandwich‐structured separator demonstrate superior electrochemical performance including initial capacity, rate performance, and cyclic stability compared with the PP separator. This work may provide a facile approach for separator modification to improve the performance of LIBs. Abstract : A sandwich‐structured separator based on in situ coated polyaniline (PANI) on polypropylene membrane was synthesized in this paper. Enhanced initial capacity, cyclic stability, and rate performance were achieved when applied the separator in lithium‐ion batteries (LIBs). The improved electrolyte wettability is the main reason for the superior performance. This work is instructive for exploiting new applications of PANI and developing functional separators in LIBs.