Flowable Redoxmer Science

Imagine if...
we could design high-performance, redox-active fluids possessing self-reporting, self-protecting, self-repairing, and regenerative functions, designed by using numerical forecasting models that predict a complete set of electrochemical, stability, and transport properties.

Flow batteries replace the solid electrodes of conventional batteries with liquid solutions of redox atoms and molecules, enabling large storage capacity for grid-scale applications and long lifetime without the strain of repeated expansion and contraction of solid electrodes during charging and discharging. However, the materials in today’s flow batteries are relatively simple and do not have the flexibility to meet multiple performance metrics simultaneously, such as high energy density, smart responsive behavior and low cost.

The Flowable Redoxmer Thrust lays the molecular foundation for a new concept in flow batteries introduced in JCESR’s first five years: redox-active polymers, or redoxmers. Redoxmers offer a wealth of design versatility, allowing complex patterns of carbon, hydrogen, oxygen, and nitrogen bonds to translate form into function.

This Thrust expresses JCESR’s mission of building transformative materials from the bottom up, combining atoms and molecules in novel configurations to produce higher operating voltages, higher mobility, longer lifetimes, greater safety, and lower cost in a single structure. There are two focus areas: design of novel redoxmers with unprecedented property combinations, and introduction of smart, responsive, and regenerative behavior.

Hierarchical design provides a new framework for smart redoxmer electrolytes.
Hierarchical design provides a new framework for smart redoxmer electrolytes.

Latest Updates

See All
  • A Message from JCESR Director George Crabtree

    Despite the coronavirus challenges, JCESR continues to push the frontier of energy storage science as we telecommute from home, like much of the nation. We are turning our attention to computation, data analysis and paper writing which continues at a normal or higher pace, enabled … Read More

  • You’re invited: Idaho National Laboratory and JCESR webinar on energy storage (March 18 )

    Electrification is changing the energy landscape of the Mountain West region. While energy storage remains a key enabler to this transformation, infrastructure upgrade and supply chain development will be a key driver for this new economy. Join us on March 18 for a webinar where we’ll … Read More

  • Direct Nano-Synthesis Methods Notably Benefit Mg-Battery Cathode Performance

    A novel Mg cathode material – CuCo2S4 – was identified as a conversion material where direct nano-synthesis was required to provide the best electrochemical performance and deliver 350 mAh·g-1 at 60 °C, a capacity nearly double that of ball-milled material with similar dimensions. Read More

  • Quantifying Capacity Losses due to Solid Electrolyte Interphase Evolution

    We quantified the capacity loss originating in solid electrolyte interphase (SEI) growth during each cycle and extracted the proportionality constant for SEI growth following a parabolic growth law. This continuous SEI growth contributes to the increasing overpotential, leading to capacity fading at a given constant … Read More

  • On Lifetime and Cost of Redox-Active Organics for Aqueous Flow Batteries

    In this viewpoint, we recommend methodology for (1) testing aqueous organic flow batteries to better understand the fade mechanisms and failure modes, and for (2) techno-economic assessment of these batteries that incorporates the costs associated with electrolyte decay and replacement to articulate a feasible design … Read More