Published August 2, 2026
| Version v1
Dataset
Flow Battery Reproducibility Study – Participant 40 (Phase 2b)
Description
Submission from participant 40 as part of the Flow Battery Reproducibility Study, Phase 2b. Job role: Staff (Postdoc, technical, academic). Experience: 6–12 months.
Additional details
Domain Specific Metadata
| Property | Value |
|---|---|
| Fb Data Collection Phase | Phase 2b |
| Fb Job Role | Staff (Postdoc, technical, academic) |
| Fb Experience Flow Batteries | 6–12 months |
| Fb Participant Identifier | 40 |
| Fb Number Of Repeats | 3 |
| Fb Electrode Pretreatment Type | Heat-treated |
| Fb Heat Treatment Furnace Type | Muffle |
| Fb Heat Treatment Atmosphere | Air |
| Fb Heat Treatment Ramp Rate | 5.0 |
| Fb Heat Treatment Dwell Temperature | 400.0 |
| Fb Heat Treatment Dwell Time | 24.0 |
| Fb Heat Treatment Cooling Method | Controlled ramp |
| Fb Heat Treatment Cooling Details | controlled cooling ramp is unlikely to be very accurate at lower temperatures |
| Fb Heat Treatment Batching | Treated individually before each test |
| Fb Time Between Heat Treatment And Use | 72.0 |
| Fb Electrode Storage After Heat Treatment | Enclosed (non-inert) |
| Fb Electrode Storage After Receipt | Open to air |
| Fb Membrane Storage Type | Wet |
| Fb Membrane Storage Liquid | deionised H2O |
| Fb Membrane Storage Details | Stored in container included with test kit with refreshed DI water |
| Fb Membrane Pretreatment | No (used as received) |
| Fb Ferrocyanide Chemical Details | Potassium hexacyanoferrate(II) trihydrate, K4Fe(CN)6 · 3H2O |
| Fb Ferrocyanide Purity | 98.5 |
| Fb Ferrocyanide Supplier | Chem-supply purchased through Sigma Aldrich |
| Fb Ferricyanide Chemical Identity | Potassium ferricyanide(III), K3Fe(CN)6 |
| Fb Ferricyanide Purity | 99.0 |
| Fb Ferricyanide Supplier | Sigma Aldrich |
| Fb Supporting Electrolyte Identity | Potassium chloride, KCl |
| Fb Potassium Chloride Purity | 99.0 |
| Fb Potassium Chloride Supplier | Merck |
| Fb Water Type | Deionised |
| Fb Water Purification System | Sartorius Arium |
| Fb Water Purification Details | Arium Comfort |
| Fb Water Resistivity | 18.2 |
| Fb Electrolyte Preparation Strategy | Multiple stock batches used across repeats |
| Fb Electrolyte Batch Size | 1000.0 |
| Fb Electrolyte Storage Environment | Dark (cupboard/covered) |
| Fb Electrolyte Storage Duration | 336.0 |
| Fb Electrolyte Volume Measurement Method | Volumetric |
| Fb Reagent Purity Used | No |
| Fb Water Ph Measured | No |
| Fb Electrolyte Ph Measured | No |
| Fb Electrode Cutting Method | Automated laser cutting for guide ad manual razor cutting for the remaining depth |
| Fb Potentiostat Usage | Different instruments for some/all tests |
| Fb Potentiostat Manufacturer Cycling | Biologic |
| Fb Potentiostat Model Cycling | VSP-3e and SP150e |
| Fb Potentiostat Manufacturer Polarisation | Biologic |
| Fb Potentiostat Model Polarisation | VSP-3e and SP150e |
| Fb Potentiostat Manufacturer Impedance | Biologic |
| Fb Potentiostat Model Impedance | VSP-3e and SP150e |
| Fb Potentiostat Calibration Frequency | Calibrated only when issues arise |
| Fb Potentiostat Calibration Method | Automated internal procedure |
| Fb Connection Method | Crocodile/alligator clips |
| Fb Electrical Connection Scheme | 2-point (2-wire) |
| Fb Potentiostat Cable Length | 1–2 m |
| Fb Potentiostat Cable Type | Manufacturer cable – standard length |
| Fb Potentiostat Cable Shielding | Shielded |
| Fb Number Of Pumps | Two separate pump |
| Fb Pump Type | Gear |
| Fb Pump Manufacturer | Nanjing Orient |
| Fb Pump Model | MG209PK/DC24B |
| Fb Reservoir Material | Glass (borosilicate) |
| Fb Reservoir Type | Duran/Schott bottle (GL bottle) |
| Fb Reservoir Volume | 250.0 |
| Fb Electrolyte Volume Used | 100 |
| Fb Impedance Reservoir Config | Single reservoir |
| Fb Polarisation Reservoir Config | Single reservoir |
| Fb Temperature Control | Ambient (not controlled) |
| Fb Laboratory Temperature | 24–26 °C |
| Fb Pump Flow Rate Calibrated | Yes |
| Fb Calibration With Cell | Yes |
| Fb Calibration Fluid | Electrolye |
| Fb Pump Recalibrated | Yes |
| Fb Pump Calibration Method | Manual volumetric |
| Fb Leak Test Performed | No |
| Fb Break In Performed | Yes |
| Fb Break In Duration | 1.0 |
| Fb Break In Flow Rate | 25 |
| Fb Cell Assembly Issues | Flow frame cracked on second use. Unrelated to the cell but the same pumps were used for VRFB work with acids and so very extensive cleaning on the pumps was required to remove all acids. Additionally since gear pumps were used residual acid was frequently interfering with result and so many repeats were done |
| Fb Additional Experiments | Yes |
| Fb Repeat Method | Full cell disassembly and rebuild, fresh electrolyte |
| Fb Electrolyte Leakage Reported | No |
| Fb Typical Group Practice Leaks | Noted but if data is necessary for an published work repeats are required |
| Fb Electrolyte Stirring | Yes |
| Fb Reservoir Stirring Method | Magnetic stir bar |
| Fb Stirring Rate | 200–400 RPM |
| Fb Electrolyte Sparging | Yes |
| Fb Sparging Gas | Nitrogen |
| Fb Gas Humidification | Humidified |
| Fb Sparging Application | Pre-sparge then headspace blanket |
| Fb Sparging Gas Flow Rate | Not recorded |
| Fb Polarisation Beyond Limits | No |
| Fb Impedance Control Mode | Potentiostatic (PEIS) |
| Fb Consent Public Display | Yes |