Tannin-Based Nanoscale Carbon Spherogels as Electrodes for Electrochemical Applications

Research output: Contribution to journalArticleResearchpeer-review


  • Ann Kathrin Koopmann
  • Jorge Torres-Rodríguez
  • Miralem Salihovic
  • Juergen Schoiber
  • Maurizio Musso
  • Nicola Huesing
  • Michael S. Elsaesser

Organisational units

External Organisational units

  • SMBS - University of Salzburg Business School, Sigmund-Haffner-Gasse 18, A-5020 Salzburg, Austria
  • Salzburg Center for Smart Materials


A promising route to monolithic, hollow sphere carbon assemblies based on sustainable precursors with a tailored nanostructure is presented. These carbon assemblies, recently termed carbon spherogels, are generated via a polystyrene sphere template-based sol-gel process of mimosa tannin and biomass-derived 5-(hydroxymethyl)furfural. By completely replacing petroleum-based precursors (especially toxic formaldehyde) highly porous, nanoscale carbon monoliths are obtained, which are investigated as state-of-the-art, sustainable electrode materials for energy storage. This study defines the required synthesis parameters, in particular the highly acidic initial pH and a tannin/water ratio of at least 0.05 or lower, for a successful and homogeneous generation of these biobased carbon spherogels.


Original languageEnglish
Pages (from-to)14115-14125
Number of pages11
JournalACS Applied Nano Materials
Issue number12
Publication statusPublished - 2 Dec 2021