Iridium black

Description

1. Product Overview
Iridium black is a high-purity, finely divided powder form of the platinum group metal (PGM) iridium, characterized by its extremely high surface area and catalytic activity. It is primarily used as a critical catalyst in high-temperature electrochemical processes and advanced chemical synthesis, including proton exchange membrane (PEM) electrolysis for green hydrogen production. The key value proposition lies in its exceptional corrosion resistance and catalytic efficiency under extreme conditions, offering superior durability over conventional noble metal catalysts. As global markets accelerate toward decarbonization and hydrogen economy infrastructure, securing a reliable supply of iridium black is a strategic imperative for maintaining competitive advantage in next-generation energy systems.

2. Key Specifications & Technical Characteristics

• Chemical composition: Iridium (Ir) ≥ 99.9% (trace metals analysis available)

• Purity grade: 99.9% (3N) minimum; 99.99% (4N) available upon request

• Physical characteristics:

  • Form: Ultrafine powder (black appearance)

  • Average particle size (D50): 1–5 µm (customizable down to <1 µm)

  • Specific surface area (BET): 20–40 m²/g

  • Bulk density: 0.8–1.2 g/cm³

  • True density: 22.56 g/cm³

• Packaging options: 100 g, 500 g, 1 kg hermetically sealed HDPE containers with inert gas purge; vacuum-sealed foil bags; bulk drums (5 kg, 10 kg) upon request

• Shelf life: 36 months when stored in original sealed packaging in dry, ambient conditions (15–25°C)

3. Core Industrial Applications

• Primary industries: Green hydrogen production (PEM electrolysis), specialty chemicals, electronics (sputtering targets), and aerospace propulsion.

• Operational use cases:

  • Anode catalyst layer in PEM electrolyzers for high-purity hydrogen generation

  • Catalyst for hydrosilylation reactions in silicone polymer manufacturing

  • Oxidation catalyst for nitric acid and high-value intermediate synthesis

• Performance advantages over alternatives: Compared to platinum black, iridium black exhibits 5–10× higher stability in acidic, high-potential environments (1.4–1.8 V vs. RHE), reducing catalyst degradation and extending electrolyzer stack life from 5 to 10+ years. Its high surface area enables lower noble metal loading per megawatt of electrolysis capacity, directly reducing system capital expenditure (CAPEX) by up to 15%.

4. Competitive Advantages

• Quality consistency: Batch-to-batch particle size distribution controlled via ISO 9001:2025-certified laser diffraction and BET surface analysis; each lot includes Certificate of Analysis (CoA) with trace impurity report (ICP-MS).

• Supply reliability: Direct long-term off-take agreements with primary PGM mines (South Africa, Russia, Zimbabwe) ensuring 12-month forward visibility and buffer inventory of ≥500 kg.

• Logistics capability: Fully classified as Class 9 hazardous material under IATA/IMDG; licensed for air, sea, and ground transport with expedited customs clearance via AEO certification.

• Price competitiveness: Quarterly pricing indexed to London Platinum and Palladium Market (LPPM) iridium fix, with volume-based rebates >5 kg per quarter.

• Sustainability: 100% traceable supply chain with no conflict minerals; 30% of feedstock sourced from post-industrial recycling loops; carbon-neutral shipping available.

• Technical support: Dedicated application engineers for catalyst ink formulation and electrode coating optimization; full XRD/SEM/TEM characterization on request.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT (metric tons) per shipment, contractable on annual or multi-year basis.

• Loading capacity: 20MT net weight per standard 20-foot dry container (Iridium black density adjusted: 1 MT per 1,000 L; 20MT requires 20,000 L = 20 CBM within 33 CBM container capacity).