M-Cell Giveaway 2026
PhD students - we have an opportunity for you!
Are you working with electrolysis or flow battery applications? Do you have a research project idea but stalled on funds?
We got you!
Redox Flow is announcing its first give-away – and the reward is a complete M-Cell, with all accessories included, worth over €5000!
We want to support PhD students who have innovative ideas, and money shouldn’t be the hang-up in that. So, we decided to post a competition: submit your project proposal, describing what you would like to use the M-Cell for. We will select the best one who will receive a full M-Cell for free!
But even if your project doesn’t win, don’t worry. You are guaranteed to receive a 15% discount on your next purchase with us*.
The Prize
If you win, you get a fully equipped M-Cell – with hydraulic connections, gaskets, vials, and a reservoir in which you can submerge the cell – all the hardware you need to start your experiment.
- 1 x M-Cell
- 1 x Fittings pack
- 1 x Hydraulic Connection Pack 1/8" with Small Vials Set
- 1 x Multiport Reservoir 250 mL
- 1 x Multiport Lid Pack
- Current Collectors: 2 x Titanium, 2 x Nickel, 2 x Stainless steel, and 2 x Graphite
- 1 x M-Cell stand
- 6 x Gasket pack - covering all operations and configurations, in your choice of material.
If your project doesn’t win, you will still receive 15% discount on your next purchase with us. This discount is valid for 6 months, see Terms and Conditions for more details.
What is the M-Cell?
The prize: our most versatile flow cell
- Exchangeable current collectors
- Multiple operation modes
- Electrical connections
The M-Cell is a multipurpose electrochemical flow cell – we call it the “Swiss army knife of electrochemistry”. It comes with 1cm2 active area and can be used in a wide range of application areas: flow batteries, AWE, AEM, PEM electrolysis, CO₂ reduction, electrodialysis, corrosion studies, catalyst and material screening, cyclic voltammetry, and more.
- The “Swiss Army knife” of electrochemistry: a single compact platform for closed flow cell, open cell, half-cell, and three-compartment configurations
- 1 cm² active area: suited for testing expensive catalysts, novel membranes, or limited-quantity materials
- Advanced reference electrode system: multiple Luggin capillary configurations with measurement point precision better than approximately 0.2 mm
- Multiple distinct configurations covering flow batteries, AWE, AEM, PEM electrolysis, CO₂ reduction, electrodialysis, corrosion studies, and cyclic voltammetry
- Robust and chemically resistant: all non-active components in PEEK, PTFE, EPDM, and VITON for operation in aggressive electrolytes at temperatures up to at least 95 °C
- Exchangeable current collectors: standard options in graphite, nickel, titanium, and 316L stainless steel; other materials available on request
- 4-wire electrical connection: separate current and voltage wires for accurate electrochemical measurements
M-Cell: the ultimate multipurpose research cell
The M-Cell is a versatile and precise 1 cm² research cell developed to address a core need in modern electrochemical laboratories: a single, reliable platform that can be adapted to a range of research projects. Whether the application is fundamental electrochemical investigation or applied engineering, the M-Cell can be configured accordingly.
Unparalleled versatility in a compact design
The M-Cell’s modularity is central to its flexibility. By changing the gasket configuration and current collectors, entirely different electrochemical setups can be built on the same cell hardware. Typical applications include:
- Catalyst and material screening: the small 1 cm² active area is well-suited for testing precious metal catalysts (e.g. Pt, Ir, Ru), novel gas diffusion electrodes (GDEs), and newly synthesised membrane materials where sample quantity is limited or material cost is high.
- Flow battery research: operate in a standard closed-cell configuration (Configurations A to C) to test electrode felts, membranes, and electrolyte formulations for redox flow batteries.
- Water electrolysis: configure as a closed cell with membrane (for PEM, AEM, or alkaline electrolysis) or as an open cell without membrane (for membraneless electrolysis studies). Reference electrodes can be added to deconvolute anode and cathode overpotentials.
- CO₂ reduction (CO₂RR): use the closed cell, open cell, or three-compartment configuration (Configuration I) to investigate electrochemical CO₂ conversion with control over the cathode environment.
- Electrodialysis: the three-compartment configuration (Configuration I) enables studies with two membranes and a central compartment, suited for ion separation research.
- Fundamental electrochemistry and cyclic voltammetry: the Full Cell hardware can also be used in half-cell configurations (G-1, G-2) for classic three-electrode experiments, providing a robust and reproducible alternative to traditional beaker cells.
- Corrosion studies: the half-cell setup with a precise reference electrode provides a platform for corrosion testing in flowing electrolytes.
Advanced reference electrode system
A defining feature of the M-Cell is its precise reference electrode capability. The design incorporates multiple Luggin capillary based arrangements that guide the measurement point to defined locations inside the cell with a spatial precision better than approximately 0.2 mm, while the reference electrode itself remains outside the primary electrochemical environment. This enables:
- Accurate overpotential measurement: deconvolute anode and cathode overpotentials in full-cell operation.
- Reduced uncompensated resistance: Luggin capillary placement lowers IR-drop for more accurate kinetic data.
- Localised potential sensing: place the reference point at the electrode surface, between the electrodes, or through the membrane (Configuration C) to investigate local electrochemical phenomena.
- Flexible positioning: Configuration H allows a 1/16” OD tube to be used as a Luggin capillary directed to almost any point in the cell.
The reference electrode circuit can be operated in dead-end mode (using a syringe, eliminating shunt currents) or in pump mode (preventing gas bubble accumulation). For detailed guidance, see the assembly manual.
Multiple operation modes
Multiple operation modes
The M-Cell can be assembled into a number of distinct configurations, each tailored for specific applications. The three fundamental operation modes are:
- closed cell operation (Configurations A, B, C): the standard two-compartment flow cell setup with electrodes separated by a membrane or porous separator. Electrolyte is circulated through each half-cell independently. Applicable to flow batteries, membrane-based electrolysis, and CO₂ reduction.
- open cell operation (Configurations D, E, F): a membraneless configuration where the cell is immersed in a common electrolyte reservoir. Electrolyte is pumped through the cell and exits between the electrodes. Applicable to membraneless water electrolysis and fundamental electrode studies.
- half-cell operation (Configurations G-1, G-2): a three-electrode setup. The electrode in the M-Cell serves as the working electrode, while the counter electrode is placed externally (G-1, wire counter) or in a second flow body (G-2). Key features include:
- reference electrode measurement point with spatial precision better than approximately 0.2 mm
- fixed geometry ensures the working, counter, and reference electrodes are always in the same spatial relationship, supporting reproducible measurements
- flow can be created through the working electrode, enabling studies of electrochemical kinetics under controlled mass transport, with characteristics comparable to a rotating disk electrode (RDE) and applicability to porous electrode materials
Additionally, Configuration I (three-compartment operation) enables setups with two membranes and a central compartment, suited for CO₂ reduction with separate anolyte/catholyte/central streams and for electrodialysis research.
| Configuration | Operation mode | Reference electrodes | Key applications |
|---|---|---|---|
| A | Closed cell | None | Flow batteries, electrolysis, CO₂ reduction |
| B | Closed cell | Individual anode and cathode | Electrolysis, CO₂ reduction, flow batteries |
| C | Closed cell | On membrane | Electrolysis, CO₂ reduction |
| D | Open cell | None | Membraneless electrolysis, CO₂ reduction |
| E | Open cell | Individual anode and cathode | Electrolysis, CO₂ reduction |
| F | Open cell | Common (via T-connector) | Electrolysis, CO₂ reduction |
| G-1 | Half-cell (wire counter) | Yes | Cyclic voltammetry, catalyst screening, kinetic studies |
| G-2 | Half-cell (flow body counter) | Yes | Cyclic voltammetry, catalyst screening, kinetic studies |
| H | Flexible Luggin | Flexible positioning | Any application requiring custom reference placement |
| I | Three-compartment | Yes (through membrane) | CO₂ reduction, electrodialysis |
System integration
The M-Cell was co-developed with the Multiport Electrolyte Reservoir to form a complete experimental platform. Together they enable:
- sealed, oxygen-free, or CO₂-saturated electrolyte environments
- temperature control up to at least 95 °C
- flexible electrolyte sampling and management
The M-Cell is also compatible with the broader range of Redox-Flow research tools, including the Temperature Control Unit and the Flow-Through Electrode Holder for inline monitoring of pH, ORP, reference potential, and conductivity.
Electrical connections
The M-Cell uses a 4-wire configuration (I+, U+, I−, U−) with ø0.7 mm wires in titanium, nickel, or 316L stainless steel. Wire quick connectors are included for fast and robust connections to a potentiostat or power supply.
Gasket and electrode thicknesses
Due to the many possible configurations, the M-Cell is supplied without gaskets. Gaskets are ordered separately to match the specific application. The gasket type and thickness define the electrode compression, the presence of reference electrode channels, and the overall cell configuration. See the assembly manual for detailed guidance on gasket selection for each configuration.
| Parameter | Specification |
|---|---|
| Active area | 1 cm × 1 cm (other dimensions on request) |
| Flow body material | PEEK (standard); other materials on request |
| Current collector materials | Graphite, nickel, 316L stainless steel, titanium (standard); other materials on request |
| Current collector wire materials | Titanium, nickel, 316L stainless steel (ø0.7 mm) |
| Electrode thickness range | 0.1 mm to 10 mm (depending on electrode material and flow rate) |
| Wetted materials | PEEK, PTFE, EPDM, VITON |
| Operating temperature | Up to at least 95 °C (depending on electrolyte and electrode materials) |
| Temperature sensor port | ø3.4 mm hole on back side for thermometers |
| Assembly hardware | M4 PEEK bolts, precision alignment bars (1/8” OD) |
| Electrical configuration | 4-wire (I+, U+, I−, U−) with quick connectors |
| Hydraulic connections | PEEK fittings with 1/8” and 1/16” OD PTFE tubing |
| Number of configurations | Closed cell, open cell, half-cell, and three-compartment (see configuration table above) |
| Approximate dimensions | ~36 mm × ~35 mm × ~35 mm |
The Application Process
Full terms and conditions – including eligibility, how the winner is selected, and how we handle your data – are available here.
Who can apply?
PhD students – regardless of seniority or location
Guidelines
Make sure you read the official rules and terms right below.
Your proposal
The proposal you submit should include the following sections:
- A little bit about you – your affiliation, your supervisor, your interests, your general academic background.
- Your research question
- Your planned experimental setup – including how’d you use the M-Cell
- Your timeline
Length: Your description should be max 1 page long.
Attachments: You can also attach max. 3 files – pictures, illustrations (this is not included in the 1 page)
Confidentiality: Do not include any confidential material.
Submission Deadline: 30 November, 2026 23:00 CET
Announcement of winner: 15 December, 2026 12:00 CET
Participation discount codes: Sent out when winner is announced.
Offical Rules, Publicity Consent & Privacy Notice
Sponsor
This giveaway (the “M-Cell Giveaway“) is organised by Redox Flow, DNMAB ApS, CVR no. DK40042350, address: Stokagervej 6H, Risskov, Denmark (“Redox Flow“, “we“, “us“). By submitting an entry, you (the “Entrant“) agree to these Official Rules.
Eligibility
To enter, you must:
- Be currently enrolled as a PhD student in good standing at an accredited university or research institution, at the time of both entry and prize award;
- Submit a research proposal that is your own original work and is relevant to electrochemical flow cells (redox flow batteries, flow cell technology, electrolysis, etc)
- Be of legal age of majority in your country of residence;
- Submit only one (1) entry per person.
Employees, contractors, and immediate family members of Redox Flow are not eligible to enter. No purchase or payment of any kind is necessary or permitted to enter or win. The Giveaway is decided entirely on the merit of the submitted proposal, judged against the criteria in Section 5 below – there is no random drawing, lottery, or element of chance involved at any stage.
How to Enter
Entries open 18 August, 2026 and close 30 November, 2026, 23:00 CET (the “Deadline“). Entries received after the Deadline will not be considered. To enter, submit the following via the form at redoxflow.com/submission:
- A written research proposal, no more than [1 page ], describing: the research question, proposed methodology, relevance to electrochemical research, and how the M-Cell would be used in the work;
- Your full name, university/institution, department, and academic supervisor’s name;
- Proof of current PhD enrolment (e.g. a student ID or enrolment letter), on request.
- A supervisor letter of support is welcome but not required.
You must also tick the checkboxes on the form confirming your agreement to these Official Rules and the Privacy Notice.
Prize & Participation Reward
One (1) winner will receive one (1) Redox Flow M-Cell – Full Cell configuration and included accessories (approximate retail value EUR 5000). This includes the following products:
- 1 x M-Cell Full Cell (SKU: FCP-MF-01, price: €1955)
- 1 x Hydraulic Connection 1/8″ with Small Vial Kit (SKU: AP-HP-01-003, Price: €895)
- 1 x Multiport Reservoir 250mL (SKU: AP-MPC-250R-01, Price: €750)
- 1 x M-Cell Multiport Lid Add-On (Price: €395)
- 1 x M-Cell Fittings Pack (Price: €290)
- 1 x M-Cell Stand (Price: €60)
- 1 x M-Cell current Collector, Titanium (Price: €172)
- 1 x M-Cell Current Collector, Nickel (Price: €172)
- 1 x M-Cell Current Collector, Graphite (Price: €144)
- 1 x M-Cell Current Collector, Stainless Steel (Price: €152)
- Gasket Packs
- 1 x M-Cell Standard Gasket Pack (G01, G03, G04) (Price: €95-175)
- 1 x M-Cell, G02 Porous Separator Pack (Price:
- 1 x M-Cell, G05 Open Cell Spacer Pack (Price: €20-25)
- 1 x M-Cell, G06 Half Cell Spacer Pack (Price: €20-25)
- 1 x M-Cell, G07 Open Cell Thick Spacers Pack (Price: €25)
- 1 x M-Cell, G08 3-Compartment Pack (Price: €30)
There is no cash alternative and the prize is not transferable to a third party. Redox Flow will cover shipping to the winner’s institution; the winner is responsible for any import duties, taxes, or customs requirements in their country. If export restrictions, sanctions, or customs issues make shipment to the winner’s country impractical, Redox Flow reserves the right to offer an equivalent-value alternative or, in rare cases, select an alternate winner.
In addition to the prize, all non-winning Entrants who submit a complete, eligible entry by the Deadline will receive a 15% discount code for their next purchase from Redox Flow. The winner will receive the prize described above and is not eligible for the discount code. The discount code will be sent by email within 5 business days of the winner announcement, is valid for 6 months from the date of issue, applies store-wide, with the exceptions of power supplies, battery testers, and other electronics, is limited to one use per Entrant, cannot be combined with other discounts or promotions unless stated otherwise, and only valid for qualified proposals.
Selection Process & Judging Criteria
Entries will be reviewed by a judging panel consisting of Mikkel Kongsfelt, Redox Flow’s CEO, and Kristian Bastholm Knudsen, Redox Flow’s Head of Innovation. Proposals will be assessed against the following criteria:
- Scientific merit and originality
- Use of the M-Cell
- Feasibility within a typical PhD research timeline
- Relevance to flow electrochemistry research
- Clarity of the proposal
Judging will take place between 30 November, 2026 and 14 December, 2026. The winner will be notified by email within 5 business days of the decision, and the result will be publicly announced around a within a week from 15 December, 2026. As part of this announcement, the winner’s project description – a general, non-technical summary of the research topic, not the full proposal – will be published. This disclosure is a condition of entering the Giveaway and is not subject to withdrawal.
Intellectual Property
You keep all rights to your proposal. Redox Flow does not claim any ownership over, or any licence to use, the research ideas, data, or methods described in your submission, beyond what is needed to review and judge your entry internally. Submitting an entry does not create any obligation between you and Redox Flow regarding future collaboration, funding, or use of your research, and does not affect your or your institution’s ownership of any resulting intellectual property.
Publicity Consent
If you are selected as the winner, we would like to name you publicly (for example on our website, LinkedIn, and X/Twitter). This requires your separate, explicit consent, which you give at the time of entry via Checkbox 3. Specifically, we would ask to use your:
- Full name
- University/institution and department
- Photo (submitted by you or taken with your permission)
You may withdraw this consent at any time before publication by emailing us; this will not affect your right to receive the prize.
Privacy Notice
Data controller: Redox Flow, DNMAB ApS, Stokagervej 6H, 8240 Risskov, contact email for data protection queries: mk@redox-flow.com
What we collect: your name, email address, university/institution, department, supervisor’s name, and the content of your submitted proposal (and, for the winner only, a photo and shipping address).
Why: to administer the Giveaway, evaluate entries, contact the winner, send the participation discount code described in Section 4, and – with your separate consent – publicise the result.
Legal basis: your consent (GDPR Art. 6(1)(a)) for entering and for any publicity; our legitimate interest in administering the competition fairly for the judging process itself.
Who sees it: only the judging panel named in Section 5 and the Redox Flow staff administering the Giveaway. We do not sell or share your data with third parties for marketing purposes.
Retention: entries from non-winning applicants will be deleted within 6 months of the winner announcement. The winner’s data relevant to shipping and publicity will be kept for 5 years.
Your rights: you can request access to, correction of, or deletion of your data, object to or restrict its processing, or ask for a copy of it, by emailing mk@redox-flow.com. You can also complain to the Danish Data Protection Agency (Datatilsynet).
Agreement to Enter
By submitting an entry, you confirm you have read and agree to these Official Rules and this Privacy Notice.
General Conditions
- Redox Flow may cancel, suspend, or amend the Giveaway or these Official Rules at its reasonable discretion, including for reasons outside its control, and will communicate any material change on the entry page.
- Redox Flow is not responsible for entries that are lost, delayed, incomplete, or misdirected for technical reasons.
- Redox Flow’s liability in connection with the prize is limited to the equipment itself; standard product safety information will accompany the M-Cell on delivery.
- If the winner does not respond to the notification within [14 days], Redox Flow may select an alternate winner from the remaining eligible entries.
Governing Law
These Official Rules are governed by the laws of Denmark. Any dispute arising from the Giveaway is subject to the exclusive jurisdiction of the Danish courts.
Contact
Questions about the Giveaway or your data can be sent to mk@redox-flow.com.
Submit application
We’re excited to hear from you!
If you have any questions, feel free to contact us at: mk@redox-flow.com
