In recent years, buyers of MMO (Mixed Metal Oxide) titanium electrodes have increasingly asked the same question:
Why do prices fluctuate so much, even when the electrode design looks unchanged?
The answer is simple – the prices of ruthenium and iridium are no longer stable, especially during the period from the end of 2025 to the beginning of 2026. However, a more in-depth answer is closely related to the actual manufacturing methods, specifications, and expected performance of MMO electrodes in real-world systems.
1. Ruthenium and Iridium Are Not "Normal" Raw Materials
Ruthenium and iridium are not bulk industrial metals like nickel or copper. Their supply chains are narrow, geographically concentrated, and closely linked to platinum group metal (PGM) mining.
In practice, this means:
- Availability is often batch-based, not continuous
- Pricing is influenced by refining capacity, not only demand
- Sudden price movements are common, especially for iridium
For MMO electrode manufacturers, this volatility directly affects coating cost because noble metal oxides are functional materials, not decorative layers.
2. In MMO Electrodes, Noble Metals Define Performance
A common misunderstanding is that noble metals only account for a "small part" of the electrode and therefore should not significantly influence price.
In reality, ruthenium and iridium:
- Determine electrocatalytic activity
- Control chlorine or oxygen evolution efficiency
- Directly affect coating lifetime and stability
Unlike many mechanical components, MMO coatings cannot simply be "thinned out" without consequences. Reducing noble metal loading may lower initial cost, but it usually shortens service life and increases voltage drift during operation.
From a manufacturing standpoint, coating chemistry and loading are performance parameters, not cosmetic options.
3. Why Price Volatility Translates into Electrode Pricing Pressure
When ruthenium or iridium prices rise, the impact on MMO electrodes is not linear, but it is unavoidable.
Several factors amplify the effect:
- Coating materials are prepared in small, controlled batches
- Scrap and process loss during coating are unavoidable
- Quality control requirements increase with higher metal cost
As a result, manufacturers cannot simply "average out" noble metal price increases across large volumes. The electrode cost structure is process-driven, not purely volume-driven.
This is why large order quantities do not automatically neutralize raw material volatility.
4. Why Prices Are More Likely to Rise Than Fall
From what we see in day-to-day production planning, the current market environment suggests continued uncertainty rather than relief.
Key observations include:
- Iridium supply remains structurally tight
- Environmental and refining constraints limit rapid capacity expansion
- Demand from electrochemical and energy-related sectors is growing
For MMO electrodes designed for stable, long-term operation, this means that future price pressure is more probable than sudden cost reductions.
This does not imply constant price increases, but it does mean that waiting rarely leads to materially better conditions for high-quality electrodes.
5. What This Means for Buyers in Practice
For buyers comparing MMO electrodes, price should be evaluated together with:
- Coating system (RuO2, IrO2, or mixed)
- Coating loading and expected lifetime
- Manufacturing route and quality control level
Two electrodes with similar dimensions may look identical on paper, yet behave very differently in service-and reflect very different noble metal strategies. Understanding this distinction helps avoid comparisons that focus only on unit price while ignoring performance stability and replacement frequency.
Conclusion
Ruthenium and iridium price volatility is not a temporary inconvenience-it is a structural factor shaping the MMO electrode industry.
For manufacturers, it defines cost boundaries. For buyers, it explains why realistic pricing must align with performance expectations.
MMO electrodes are not priced by negotiation leverage alone. They are priced by process complexity, noble metal availability, and the level of performance the application truly requires.