🔋 SGL / SCI Materials Hub Hydrophilic Battery Felt Series

KFD-H / ECM-H / GFD-H
High Performance · High Porosity · Excellent Conductivity · Customizable Sizes

🧩 Product Definition

The hydrophilic battery felt series is based on original KFD, ECM, and GFD electrode felts, further processed by SCI Materials Hub with hydrophilic treatment. This modification enhances liquid wettability and increases BET surface area, leading to improved electrochemical performance.

Applications include:

• Fuel cells (PEMFC)

• Water electrolysis (PEMWE/AEM)

• Redox flow batteries (RFB)

• High-temperature NaNiCl batteries

• Research and pilot-scale electrochemical systems

Series overview:

• KFD-H Series: Hydrophilic-treated carbon felt

• ECM-H Series: Hydrophilic-treated semi-graphitized felt

• GFD-H Series: Hydrophilic-treated graphitized felt

New models:

• GFD 2.5 EA-TA / GFD 4.6 EA-TA: Produced directly by SGL Carbon, original or thermally activated graphite felts with high porosity, conductivity, and excellent chemical stability. Designed for advanced redox flow or NaNiCl batteries. Hydrophilicity level is fixed (non-adjustable).

• GFD-H Series: Produced by SCI Materials Hub, based on SGL substrates with hydrophilic modification. Offers tunable hydrophilicity (H(W) / H(M) / H(S)) for flexible applications, especially in lab modules and low–medium power systems.

💧 Hydrophilicity Grades

• H(W) Weak Hydrophilic – Minimal improvement in wettability, retains maximum conductivity

• H(M) Moderate Hydrophilic (Standard) – Fully wettable by liquid, standard grade for most applications

• H(S) Strong Hydrophilic – Fast and complete liquid penetration, ideal for high-performance modules

📊 Model Comparison

Note: All H series are modified by SCI Materials Hub. EA-TA series are original SGL thermally activated felts.

🔧 Usage & Pretreatment

• Cut to designed thickness and directly assemble

• Recommended compression: 70–80% for optimized resistance and mass transfer

• Catalyst deposition: suitable for spray coating or impregnation

• ECM-H / GFD-H: can be lightly heat-activated to enhance hydrophilicity

• KFD-H: surface oxidation recommended to further improve catalyst wetting

• GFD EA-TA: already thermally activated, ideal for high-power & high-temperature applications

🏷 Storage

• Store in dry, cool, ventilated environment

• Avoid dust, strong acids/alkalis

• Use sealed or moisture-proof packaging for long-term storage

• Temperature: 0–40℃

• Avoid mechanical compression to keep felt flat

📐 Sizes & Customization

• Standard sizes: 5×5 / 10×10 / 20×20 / 30×30 / 40×40 cm

• Custom thickness, areal density, activation level, and hydrophilicity available

• Support for single-piece samples and bulk orders

✅ Application Scenarios

❓ FAQ

Q1: What is the source of H-series felts?
A1: All H-series are processed by SCI Materials Hub, based on SGL KFD / ECM / GFD substrates.

Q2: What is the difference between GFD EA-TA and GFD-H?
A2:

• GFD EA-TA: Original SGL thermally activated product, high conductivity & chemical stability, for high-power & high-temp applications.

• GFD-H: SCI Materials Hub hydrophilic treated product, enhanced wettability & BET surface area, suitable for lab modules and flexible R&D use.

Q3: Can H-series be used directly?
A3: Yes. Hydrophilic treatment improves liquid contact and catalyst wetting. EA-TA series can also be used directly for high-power applications.

Q4: Can I customize size and thickness?
A4: Yes. Thickness, areal density, and hydrophilicity can all be tailored. Both sample and batch orders are supported.

Q5: Can catalyst be directly coated?
A5: Yes. Hydrophilic modification allows direct Pt/C or other catalyst deposition, improving electrode wetting and catalytic efficiency.

🌍 International Orders & Shipping

📧 Email: contact@scimaterials.cn
📞 WhatsApp & Tel: +86 153-7569-8751

🔗 Place quick orders on our eBay / Amazon / Alibaba stores.

🌐 We ship worldwide via DHL, FedEx, UPS, SF-Express, or other requested carriers.
📦 Bulk quantities with discount available upon request.

💳 Payment methods accepted: Bank Wire Transfer, PayPal, Credit Card (via Taobao), Alipay, WeChat Pay

📊 SGL Battery Felt Series · Size · Price List

📌 Notes

• H(W) Weak Hydrophilic: Minimal wettability improvement, maximum conductivity retained

• H(M) Moderate Hydrophilic (Standard) : Fully wettable by liquids, standard grade

• H(S) Strong Hydrophilic: Fast and complete liquid penetration, ideal for high-power systems

• EA-TA: Original SGL thermally activated substrate

• H Series: Hydrophilic modification by SCI Materials Hub

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.