Volltext-Downloads (blau) und Frontdoor-Views (grau)

Mixed Cu–Fe Sulfides Derived from Polydopamine-Coated Prussian Blue Analogue as a Lithium-Ion Battery Electrode

  • Batteries employing transition-metal sulfides enable high-charge storage capacities, but polysulfide shuttling and volume expansion cause structural disintegration and early capacity fading. The design of heterostructures combining metal sulfides and carbon with an optimized morphology can effectively address these issues. Our work introduces dopamine-coated copper Prussian blue (CuPB) analogue as a template to prepare nanostructured mixed copper–iron sulfide electrodes. The material was prepared by coprecipitation of CuPB with in situ dopamine polymerization, followed by thermal sulfidation. Dopamine controls the particle size and favors K-rich CuPB due to its polymerization mechanism. While the presence of the coating prevents particle agglomeration during thermal sulfidation, its thickness demonstrates a key effect on the electrochemical performance of the derived sulfides. After a two-step activation process during cycling, the C-coated KCuFeS2 electrodes showed capacities up to 800 mAh/g at 10 mA/g with nearly 100% capacity recovery after rate handling and a capacity of 380 mAh/g at 250 mA/g after 500 cycles.

Download full text files

  • Fulltexteng
  • Material characterization of PDA-coated CuFe Prussian blue particles before and after sulfidation by Rietveld refinement and thermogravimetric analysis; additional transmission electron micrographs; and comprehensive electrochemistry data and its postmortem analysis for the sample CuPB-PDA2-S

Export metadata

Additional Services

Share in Twitter Search Google Scholar


Document Type:Article
Author:Behnoosh BornamehrORCiD, Volker PresserORCiD, Samantha HusmannORCiD
Parent Title (English):ACS Omega
First Page:38674
Last Page:38685
Year of first Publication:2022
Release Date:2022/11/02
Impact:04.132 (2021)
Funding Information:German Research Foundation (DFG, Deutsche Forschungsgemeinschaft) PBDS project (HU 2959/2)
DDC classes:500 Naturwissenschaften und Mathematik / 540 Chemie
Open Access:Open Access
Signature:INM 2022/104
Licence (German):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International