Recent Advancements in Rational Design of Non-Aqueous Organic Redox Flow Batteries

Schematic illustration of example strategies developed in non-aqueous organic redox flow batteries to enhance power density and energy density.

Scientific Achievement

Organic redox-active molecules are considered as next-generation materials for non-aqueous redox-flow batteries (NAqORFBs). In this review, we screen the state-of-art advancements made in NAqORFBs, shed light upon the approaches that lie behind the developments, and detail the areas of particular interest through highlighted examples.

Significance and Impact

The current discussion and analysis in the recent advancements  of NAqORFBs bridge the scientific aspects of NAqORFBs with ongoing practices, and is anticipated to facilitate the improvement of versatile organic redox-active materials for grid-energy storage.

Research Details

  • Key strategies developed in improving the power density and energy density of NAqRFBs were summarized and detailed.
  • Main Topics include strategies for enabling multielectron transfer, improving solubility, stability, cell voltage, and species crossover. For each topic, we offered comprehensive discussions on possible theories, examples, and perspectives in potential improvements.
  • System optimization aided by computational modeling was evaluated.
  • We addressed current limitations and challenges to the extended application of NAqORFBs. Future directions toward the rational design of redox-active compounds were also suggested.

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DOI: 10.1039/d0se00800a

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