DiffuCarb™ E330 Ir-Carbon Paper (Electrolyzer Electrode) combines iridium (Ir) catalyst with different types of carbon paper substrates, designed for a variety of electrochemical reactions, including CO2 reduction reaction (CO2RR) anode applications, proton exchange membrane (PEM) electrolyzers, anion exchange membrane (AEM) electrolyzers, and alkaline (ALK) electrolyzers. Based on different application scenarios, F200R raw carbon paper, F200T hydrophobic carbon paper, and F200P platinum-coated carbon paper are selected as the substrates, and Nafion or PTFE is used as the binder to optimize electrode performance. Below are the specific designs and applications:

1. Advantages of Ir Catalyst

   • High Catalytic Activity: Iridium (Ir) serves as an excellent catalyst for the oxygen evolution reaction (OER), demonstrating superior catalytic performance and stability under high current density conditions. This makes it highly efficient in oxygen production during electrolysis.
   • Corrosion Resistance: Iridium has excellent corrosion resistance and can operate in strongly acidic and alkaline electrolytes without significant degradation, making it suitable for different types of electrolyzer systems.

2. Carbon Paper Substrate and Binder Configuration

   • F200R Raw Carbon Paper + Nafion Binder: DiffuCarb™ E330 Ir-Carbon Paper (Electrolyzer)
     • Application: Suitable for PEM electrolyzers, AEM electrolyzers, ALK electrolyzers, and CO2RR anodes.
     • Features: F200R raw carbon paper offers good electrical conductivity and mechanical strength. Nafion binder helps improve proton conductivity and catalyst dispersion, ensuring efficient electrode performance in acidic environments.
   • F200T Hydrophobic Carbon Paper + PTFE Binder: DiffuCarb™ E330T Ir-Carbon Paper (Hydrophobic Interface, CO2RR Anode)
     • Application: Widely used in CO2RR anode electrodes, also suitable for AEM and ALK electrolyzers.
     • Features: F200T hydrophobic carbon paper is treated to expel generated oxygen gas bubbles, preventing bubble blockage at catalytic sites and improving electrode efficiency. PTFE as the binder enhances durability, prevents excessive oxidation of electrode materials, and allows stable operation under high-temperature conditions. In CO2RR, this electrode shows exceptional stability, effectively extending the equipment's lifespan.
   • F200P Platinum-Coated Carbon Paper + Nafion Binder: DiffuCarb™ E330PT Ir-Platinum-Coated Carbon Paper (Electrolyzer)
     • Application: Especially suitable for PEM electrolyzer systems, but also applicable to AEM and ALK electrolyzers.
     • Features: F200P platinum-coated carbon paper provides additional conductivity and stability. Combined with Nafion binder, it further improves proton conductivity, ensuring high efficiency in both acidic and alkaline environments. This combination provides high ionic conductivity, reducing electrode resistance and improving overall electrolysis efficiency.

3. Features and Advantages

   • High Efficiency: The application of Ir catalyst on different carbon paper substrates optimizes the electrode's catalytic performance. Whether in CO2RR or PEM, AEM, ALK electrolyzers, these electrodes demonstrate low overpotentials and high current densities.
   • Durability and Stability: F200T hydrophobic carbon paper electrodes with PTFE binder are particularly suitable for high-temperature and strong oxidation environments, showing excellent stability and durability. This characteristic is especially noticeable in CO2RR, ensuring consistent performance over long operating periods.
   • Versatility: With different carbon paper substrates and binder combinations, this electrode system can achieve optimized performance in various electrolyzer technologies (PEM, AEM, ALK) and CO2RR anode applications.
   • High Ionic Conductivity: The combination of platinum-coated carbon paper and Nafion increases the ionic conductivity of the electrode, making it ideal for electrolyzer systems requiring high conductivity, reducing system resistance and enhancing electrolysis efficiency.

4. Application ProspectsThis Ir-carbon paper electrode design meets various needs in both electrolysis and CO2 reduction reactions. It has significant application potential in industrial hydrogen production, carbon-neutral technologies, and renewable energy conversion fields. By optimizing electrode structure and material selection, it can further improve its performance under high efficiency and long lifespan conditions, providing reliable support for future green energy technologies.

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Note: F200T is hydrophobic carbon paper, while F200P is platinum-coated carbon paper (default 0.1 mg/cm² Pt).

For AEM applications, users can customize other types of binders, such as Fumion, PiperION, etc.

The thickness of the carbon paper substrate can be customized: 0.1-1.5 mm. Brand customization is available: Fueiceel®, Toray, AvCarb, etc.

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Partial references citing our materials (from Google Scholar)

Carbon Dioxide Reduction

1. ACS Nano Strain Relaxation in Metal Alloy Catalysts Steers the Product Selectivity of Electrocatalytic CO₂ Reduction

The bipolar membrane (Fumasep FBM) in this paper was purchased from SCI Materials Hub, which was used in rechargeable Zn-CO₂ battery tests. The authors reported a strain relaxation strategy to determine lattice strains in bimetal MNi alloys (M = Pd, Ag, and Au) and realized an outstanding CO₂-to-CO Faradaic efficiency of 96.6% with outstanding activity and durability toward a Zn-CO₂ battery.

2. Front. Chem. Boosting Electrochemical Carbon Dioxide Reduction on Atomically Dispersed Nickel Catalyst

In this paper, Vulcan XC-72R was purchased from SCI Materials Hub. Vulcan XC 72R carbon is the most common catalyst support used in the anode and cathode electrodes of Polymer Electrolyte Membrane Fuel Cells (PEMFC), Direct Methanol Fuel Cells (DMFC), Alkaline Fuel Cells (AFC), Microbial Fuel Cells (MFC), Phosphoric Acid Fuel Cells (PAFC), and many more!

3. Adv. Mater. Partially Nitrided Ni Nanoclusters Achieve Energy-Efficient Electrocatalytic CO₂ Reduction to CO at Ultralow Overpotential

An AEM membrane (Sustainion X37-50 Grade RT, purchased from SCI Materials Hub) was activated in 1 M KOH for 24 h, washed with ultra-purity water prior to use.

4. Adv. Funct. Mater. Nanoconfined Molecular Catalysts in Integrated Gas Diffusion Electrodes for High-Current-Density CO₂ Electroreduction

In this paper (Supporting Information), an anion exchanged membrane (Fumasep FAB-PK-130 obtained from SCI Materials Hub (www.scimaterials.cn)) was used to separate the catholyte and anolyte chambers.

SCI Materials Hub: we also recommend our Fumasep FAB-PK-75 for the use in a flow cell.

5. Appl. Catal. B Efficient utilization of nickel single atoms for CO₂ electroreduction by constructing 3D interconnected nitrogen-doped carbon tube network

In this paper, the Nafion 117 membrane was obtained from SCI Materials Hub.

6. Vacuum Modulable Cu(0)/Cu(I)/Cu(II) sites of Cu/C catalysts derived from MOF for highly selective CO₂ electroreduction to hydrocarbons

In this paper, Proton exchange membrane (Nafion 117), Nafion D520, and Toray 060 carbon paper were purchased from SCI Materials Hub.

7. National Science Review Confinement of ionomer for electrocatalytic CO2 reduction reaction via efficient mass transfer pathways

An anion exchange membrane (PiperION-A15-HCO3) was obtained from SCI Materials Hub.

8. Catalysis Communications Facilitating CO2 electroreduction to C2H4 through facile regulating {100} & {111} grain boundary of Cu2O

Carbon paper (TGPH060), membrane solution (Nafion D520), and ionic membrane (Nafion N117) were obtained from Wuhu Eryi Material Technology Co., Ltd (a company under SCI Materials Hub).

Batteries

1. J. Mater. Chem. A Blocking polysulfides with a Janus Fe3C/N-CNF@RGO electrode via physiochemical confinement and catalytic conversion for high-performance lithium–sulfur batteries

Graphene oxide (GO) in this paper was obtained from SCI Materials Hub. The authors introduced a Janus Fe3C/N-CNF@RGO electrode consisting of 1D Fe3C decorated N-doped carbon nanofibers (Fe3C/N-CNFs) side and 2D reduced graphene oxide (RGO) side as the free-standing carrier of Li2S6 catholyte to improve the overall electrochemical performance of Li-S batteries.

2. Joule A high-voltage and stable zinc-air battery enabled by dual-hydrophobic-induced proton shuttle shielding

This paper used more than 10 kinds of materials from SCI Materials Hub and the authors gave detailed properity comparsion.

The commercial IEMs of Fumasep FAB-PK-130 and Nafion N117 were obtained from SCI Materials Hub.

Gas diffusion layers of GDL340 (CeTech) and SGL39BC (Sigracet) and Nafion dispersion (Nafion D520) were obtained from SCI Materials Hub.

Zn foil (100 mm thickness) and Zn powder were obtained from the SCI Materials Hub.

Commercial 20% Pt/C, 40% Pt/C and IrO2 catalysts were also obtained from SCI Materials Hub.

3. Journal of Energy Chemistry Vanadium oxide nanospheres encapsulated in N-doped carbon nanofibers with morphology and defect dual-engineering toward advanced aqueous zinc-ion batteries

In this paper, carbon cloth (W0S1011) was obtained from SCI Materials Hub. The flexible carbon cloth matrix guaranteed the stabilization of the electrode and improved the conductivity of the cathode.

4. Energy Storage Materials Defect-abundant commercializable 3D carbon papers for fabricating composite Li anode with high loading and long life

The 3D carbon paper (TGPH060 raw paper) were purchased from SCI Materials Hub.

5. Nanomaterials A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS2 Cathode Catalysts

Nafion D520 (5 wt%), and carbon paper (GDL340) were received from SCI-Materials-Hub.

6. SSRN An Axially Directed Cobalt-Phthalocyanine Covalent Organic Polymer as High-Efficient Bifunctional Catalyst for Zn-Air Battery

Carbon cloth (W0S1011) and other electrochemical consumables required for air cathode were provided by SCI Materials Hub.

Oxygen Reduction Reaction

1. J. Chem. Eng. Superior Efficiency Hydrogen Peroxide Production in Acidic Media through Epoxy Group Adjacent to Co-O/C Active Centers on Carbon Black

In this paper, Vulcan XC 72 carbon black, ion membrane (Nafion N115, 127 μL), Nafion solution (D520, 5 wt%), and carbon paper (AvCarb GDS 2230 and Spectracarb 2050A-1050) were purchased from SCI Materials Hub.

2. Journal of Colloid and Interface Science Gaining insight into the impact of electronic property and interface electrostatic field on ORR kinetics in alloy engineering via theoretical prognostication and experimental validation

The 20 wt% Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) were purchased from SCI Materials Hub. This work places emphasis on the kinetics of the ORR concerning Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) catalysts, and integrates theoretical prognostication and experimental validation to illuminate the fundamental principles of alloy engineering.

Water Electrolysis

1. International Journal of Hydrogen Energy Gold as an efficient hydrogen isotope separation catalyst in proton exchange membrane water electrolysis

The cathodic catalysts of Pt/C (20 wt%, 2–3 nm) and Au/C (20 wt%, 4–5 nm) were purchased from SCI Materials Hub.

2. Small Science Silver Compositing Boosts Water Electrolysis Activity and Durability of RuO2 in a Proton-Exchange-Membrane Water Electrolyzer

Two fiber felts (0.35 mm thickness, SCI Materials Hub) were used as the porous transport layers at both the cathode and the anode.

3. Advanced Functional Materials Hierarchical Crystalline/Amorphous Heterostructure MoNi/NiMoOx for Electrochemical Hydrogen Evolution with Industry-Level Activity and Stability

Anion-exchange membrane (FAA-3-PK-130) was obtained from SCI Materials Hub website.

Fuel Cells

1. Polymer Sub-two-micron ultrathin proton exchange membrane with reinforced mechanical strength

Gas diffusion electrode (60% Pt/C, Carbon paper) was purchased from SCI Materials Hub.

Characterization

1. Chemical Engineering Journal Electrochemical reconstitution of Prussian blue analogue for coupling furfural electro-oxidation with photo-assisted hydrogen evolution reaction

An Au nanoparticle film was deposited on the total reflecting plane of a single reflection ATR crystal (SCI Materials Hub, Wuhu, China) via sputter coater.