Cellulose Nanocrystals Crosslinked with Sulfosuccinic Acid as Sustainable Proton Exchange Membranes for Electrochemical Energy Applications

Olena Selyanchyn, Thomas Bayer, Dino Klotz, Roman Selyanchyn, Kazunari Sasaki, Stephen Matthew Lyth

研究成果: ジャーナルへの寄稿学術誌査読

抄録

Nanocellulose is a sustainable material which holds promise for many energy-related applications. Here, nanocrystalline cellulose is used to prepare proton exchange membranes (PEMs). Normally, this nanomaterial is highly dispersible in water, preventing its use as an ionomer in many electrochemical applications. To solve this, we utilized a sulfonic acid crosslinker to simultaneously improve the mechanical robustness, water-stability, and proton conductivity (by introducing-SO3 H+ functional groups). The optimization of the proportion of crosslinker used and the crosslinking reaction time resulted in enhanced proton conductivity up to 15 mS/cm (in the fully hydrated state, at 120 C). Considering the many advantages, we believe that nanocellulose can act as a sustainable and low-cost alternative to conventional, ecologically problematic, perfluorosulfonic acid ionomers for applications in, e. fuel cells and electrolyzers.

本文言語英語
論文番号658
ジャーナルMembranes
12
7
DOI
出版ステータス出版済み - 7月 2022

!!!All Science Journal Classification (ASJC) codes

  • 化学工学(その他)
  • プロセス化学およびプロセス工学
  • ろ過および分離

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