More Than a Chemistry Choice
A sustainable storage system must consider materials, safety, lifetime, efficiency, maintenance and end-of-life pathways.
Why Aqueous Chemistry Matters
Aqueous RFBs use water-based electrolytes. Reviews identify nonflammability as a core safety advantage, while also noting the trade-off imposed by water's electrochemical stability window and the resulting challenge of increasing energy density.
Research is expanding beyond conventional vanadium systems toward iron-based and organic redox couples, among others, with the aim of combining abundance, lower cost, stability and strong electrochemical performance.
Designing for Lifetime
Stable Electrolytes
Electrolyte degradation directly affects capacity retention and replacement cost. In aqueous organic RFBs, molecular lifetime is therefore a central research metric.
Abundant Materials
Iron-based RFB research is motivated in part by iron's abundance, low toxicity and potential cost advantages.
Recoverable Systems
External electrolyte and modular components create opportunities for maintenance, rebalancing, recovery and refurbishment strategies.
Kangro's Development Lens
We view performance and sustainability as coupled design objectives. A higher-performing chemistry is only useful if it can also be engineered into a stable, safe, manufacturable and economically practical system. Our development framework therefore considers electrolyte chemistry, electrodes, membranes, stack engineering, balance-of-plant and end-of-life together.