Regenerative Fuel Cells TRIZ Cases

Non-aqueous catholyte with two-electron redox active compounds overcomes narrow potential windows to achieve high energy density.

Limiting platinum-group ions to 4.5 ppm prevents water decomposition, resolving the contradiction between high discharge capacity and harmful side reactions.

A zinc-iron chloride flow battery uses equimolar electrolytes with microporous separators to maintain stable voltage.

Ultrasonic sensors detect sonic vibrations in flow-cell packs to determine charging status, avoiding performance degradation from extra power supply.

Optical absorption spectroscopy determines redox-active element concentrations to correct chemical imbalances and restore baseline performance levels.

Correlating the rate of change in equilibrium half-cell reduction potential with state of charge eliminates reference electrode drift and fouling issues.

A carbon-based system stores renewable energy as solid carbon for transport and dispatch.

A secondary battery design integrates capacity restoring electrodes to generate hydrogen and oxygen gases from aqueous electrolytes.

A rechargeable redox flow battery uses a chromium cathode paired with a zinc anode and cerium mediator to store electrical energy.

A separation membrane combines a microporous polyolefin substrate with an ion-exchange resin layer to transport ions efficiently.

A dilution assist unit supplies oxidant gas to mix with anode exhaust during scavenging cycles.

Redox flow battery electrolyte restricts metal and non-metal ion concentrations below 220 ppm to prevent precipitate formation that degrades electrode surfaces.

A conductive back plate with interleaved sinuous channels distributes electrolyte across carbon felt electrodes in redox flow cells.

Convert waste black powder into iron oxide electrolytes to lower material costs for flow batteries.

Temperature-dependent voltage thresholds prevent membrane electrode assembly degradation while maintaining drivability.

Ductile plating additives stabilize iron redox flow battery electrolytes during rapid charging cycles to prevent electrode degradation.

A polycarbonate-based polyurethane separator enhances ion conductivity in non-aqueous flow cells.

Separate electrolyte inlet and outlet ports in an internally manifolded flow cell stack minimize shunt current losses by increasing ionic resistance.

Non-aqueous electrolyte with metal-ligand complexes boosts redox flow battery energy density and efficiency.

Multiple cyclopentadienyl ligands on ferrocene cores reduce operating voltage and prevent membrane fouling in seawater desalination.

A fuel cell power system separates high-voltage circuits from combustible gas chambers using a dividing wall, reducing wire complexity and ignition risk.

Substituted catecholate ligands form coordination compounds that provide high solubility in aqueous electrolyte solutions.

A size-exclusion membrane separates counter ions from redox active polymers in non-aqueous flow batteries.