Polymer/zinc hybrid-flow battery using block copolymer micelles featuring a TEMPO corona as catholyte. Issue 9 (4th February 2016)

• Record Type: Journal Article
• Authors: Winsberg, Jan; Muench, Simon; Hagemann, Tino; Morgenstern, Sabine; Janoschka, Tobias; Billing, Mark; Schacher, Felix H.; Hauffman, Guillaume; Gohy, Jean-François; Hoeppener, Stephanie; Hager, Martin D.; Schubert, Ulrich S.
• Is Part Of: Polymer chemistry. Volume 7:Issue 9(2016)
• Page Start: 1711
• Page End: 1718
• Publication Date: 2016-02-04
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c5py02036k
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : A poly(TEMPO methacrylate)-poly(styrene) block copolymer was utilised as catholyte in polymer/zinc hybrid flow batteries. Abstract : A well-defined block copolymer was applied in a semi-organic polymer hybrid-flow battery (pHFB). A 2, 2, 6, 6-tetramethylpiperidinyl- N -oxyl (TEMPO) containing polymer was utilised as cathode active material. Micellar structures of the active material were achieved by utilising a diblock copolymer composed of a polar poly(TEMPO methacrylate) (PTMA) and an unpolar poly(styrene) (PS) block, which enables the formation of core-corona micelles in organic carbonates. The synthesised PTMA- b -PS was electrochemically investigated and subsequently utilised as catholyte in polymer/Zn pHFBs. The constructed flow batteries feature an excellent cycling stability of 1000 consecutive charge/discharge cycles with 95% retention of initial discharge capacity and a stable voltage range of 2 V. Further, the charging process leads to slight changes in the micellar structure combined with an increased solubility.