Synthesis of triblock copolymer polydopamine-polyacrylic-polyoxyethylene with excellent performance as a binder for silicon anode lithium-ion batteries. Issue 9 (25th January 2018)

• Record Type: Journal Article
• Authors: Lü, Lei; Lou, Hongming; Xiao, Yinglin; Zhang, Guangzhao; Wang, Chaoyang; Deng, Yonghong
• Is Part Of: RSC advances. Volume 8:Issue 9(2018)
• Page Start: 4604
• Page End: 4609
• Publication Date: 2018-01-25
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra13524f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Triblock copolymer polydopamine-polyacrylic-polyoxyethylene with strong adhesion as a novel binder enhance the cycle performance of silicon anode. Abstract : Triblock copolymer polydopamine-polyacrylic-polyoxyethylene (PDA-PAA-PEO) with excellent performance as a binder for silicon anodes was synthesized. Its structure was confirmed by 1 H-NMR, FTIR and UV-vis spectroscopy. Results of electrochemical measurements indicated that a silicon anode based on PDA-PAA-PEO binder exhibited excellent cycle performance with a reversible capacity of 1597 mA h g −1 after 200 cycles at a current density of 0.5 C, much better than that of an electrode based on a polyvinylidene-fluoride binder. Improvement of the cycle performance and reversible capacity for silicon anodes could be attributed to the strong adhesive and high ion conductivity of PDA-PAA-PEO.