Regenerative Fuel Cells TRIZ Cases

A rebalancing system circulates electrolyte through a separate cell with an anion exchange membrane to restore iron oxidation states.

A PEM fuel cell stack supplies power during startup and shutdown of high temperature systems.

Microporous polymer membranes paired with oligomeric redox-active materials block active-material crossover while maintaining high ionic conductivity.

A compact hydrogen generator system integrates electrolysis, storage, and fuel cell components within a single casing for simplified deployment.

Rough bipolar plate grooves promote electrolyte turbulence, enhancing diffusion and reducing unreacted discharge in redox flow batteries.

Donor-acceptor mesh structures in aromatic polymer membranes reduce vanadium ion permeation and water migration while maintaining high proton conductivity.

A termination assembly uses conductive coatings on current collectors and electrode end plates to maintain electrical contact in redox flow batteries.

Soft carbon fibers with a Young's modulus of 200 GPa or less prevent membrane perforation while maintaining electrical conductivity.

Replacing aqueous solvents with nickel-ligand complexes prevents metal precipitation, expanding the voltage window and increasing energy density.

A redox flow battery system uses a switching unit to control conduction states of parallel branch circuits for uniform electrolyte distribution.

A redox flow battery measurement system uses a standard electrode to control voltage for total electrolysis of the electrolyte.

Electrolysis device restores vanadium electrolyte valence without chemical additives, eliminating residual interference and extending battery life.

Phosphorus and titanium additives stabilize dissolved manganese ions, preventing oxide precipitation that increases flow resistance and reduces energy density.

Oxidation and sulfonation of cellulose fibers create a composite membrane that prevents redox component leakage while reducing material costs.

A subsurface battery uses hydraulic fractures in salt water strata to create conductive electrodes for energy storage.

Segmenting the flow frame into multiple lateral paths reduces pressure drop while maintaining high power output and minimizing pump energy consumption.

Sulfonic acid complexes prevent metal ion precipitation, enabling higher energy density across 0°C to 60°C operational range.

A redox flow battery uses a multi-terminal switching circuit to control electrical connections between stacked cells.

A non-aqueous redox flow battery uses a cation-permeable separator to shuttle ions between organic electrolytes.

A fuel cell system uses a selective membrane to separate oxygen and water while switching between hydrogen collection and electricity generation modes.

Nitrogen heterocycles in aromatic polyether membranes create selective ion channels that minimize vanadium crossover while maintaining high chemical stability.

Resin films mediate compression molding of graphite-filled epoxy, preventing surface resin flow that causes high resistance.

A battery cell frame with an inner peripheral recessed portion engages a bipolar plate outer engaging portion to stabilize component positioning.

A rotating test cell disperses electrolyte uniformly, reducing zinc-bromine battery stability evaluation from months to rapid cycles.

Stack carbon foam uses lamination to reduce large through holes in thin films.

Replacing aqueous solvents with non-aqueous electrolytes and electron-withdrawing ligands eliminates water decomposition, boosting energy density.

Controlled stoichiometry in oriented apatite-type oxide ion conductors resolves the contradiction between structural stability and high oxide ion conductivity.

A catalytic reactor reduces 4-valent vanadium to high-purity 3.5-valent electrolytes using inert gas purging and phase separation.

Thioether and sulfonate groups on hydroquinone rings maintain high reduction potentials while ensuring stability in aqueous acid solutions.

A bifurcated annular sealing member sandwiches a battery membrane between flexible leg portions to create a reliable fluid seal.

A separator plate features a contiguous lowered transition region between flow channels and distribution areas.

Dynamic pressure adjustment via a microporous water transport plate prevents cathode flooding, maintaining desired cell voltage under varying power loads.

Interdigitated flow fields force electrolyte transport through liquid-porous electrodes to enable thinner electrode structures.

A monopropellant system stores hydrogen peroxide to generate propulsion force via catalytic decomposition during aircraft takeoff.

Buried carbon fiber electrodes reduce reaction resistance and pressure loss by optimizing local density within bipolar plate grooves.

A seal groove with a narrow section elastically deforms the sealing member to prevent detachment.

Non-aqueous metal-ligand electrolytes overcome aqueous solvent potential limits to raise redox flow battery energy density.

Crosslinked poly(aryl ether) membranes with inorganic nanoparticles reduce vanadium ion permeability while maintaining high anion conductivity.

A bi-directional AC/DC converter integrates power flow between a reversible solid oxide fuel cell unit and the electrical grid.

pH-stabilizing buffers in redox flow battery electrolytes chemically stabilize transition metal oxides, preventing capacity loss from activity decrease.

An electrochemical cell converts hydrogen gas to protons in all-iron redox flow batteries.

Redox active metal ligand coordination compounds enable high energy storage density in aqueous flow batteries.

Solvent-free synthesis prevents organic contamination that swells membranes, ensuring reliable flow battery operation.

Phosphate additives minimize hydrogen evolution to reduce irreversible capacity attenuation.

Overlapping electrolyte inlet and outlet slits in the frame body thickness facilitate direct heat conduction between positive and negative electrode fluids.

Same-charge ionomer membranes repel active materials to block crossover while maintaining ion transport efficiency in aqueous redox flow batteries.

Manganese titanium reactive metal ion electrolyte enables high energy density charge discharge cycles.

A redox flow battery string adjusts individual state-of-charge values to match a target level.