Anodes & Cathodes for Col Electrolyzers & Fuel Cells

The anode and cathode are where electrolyzer and fuel-cell performance is won or lost — this collection groups the catalysts, support powders, and pre-coated electrodes that drive the hydrogen and oxygen reactions across PEM, alkaline/AEM, and solid-oxide cells. Every material here is matched to a specific operating window (acidic, alkaline, or high-temperature) and a specific reaction (HER, HOR, OER, or ORR), so the right pick depends on your cell architecture before anything else.

For PEM electrolyzers and fuel cells, the acidic, high-potential environment narrows the field to noble metals and their oxides. We stock platinum on carbon (Pt/C) and Pt-Pd alloy on carbon for HOR/ORR duty, plus iridium black, IrOx-coated titanium felt, and RuOx-coated titanium felt as OER anodes. Ru/C and Pt-Ru combinations cover methanol-tolerant and CO-tolerant anode work.

For alkaline and AEM systems, earth-abundant transition metals become viable. Ni/C is a common HER cathode and HOR anode in AEM fuel cells, and amorphous CoFeOx serves as a non-PGM OER catalyst where the 4-electron oxygen evolution kinetics need to be pushed without iridium.

For solid oxide cells (SOFC and SOEC), the materials shift to mixed ionic-electronic conductors and ceramic composite electrodes. NiO/8YSZ electrode-support pellets give you the porous anode-support substrate for anode-supported cells; NiO electrode slurry handles infiltration and contact-layer work. On the air-side, LSC (lanthanum strontium cobaltite) perovskite powder provides high conductivity for current-collection and thin-film cathode layers, and YSZ powder doubles as electrode precursor and dense electrolyte feedstock.

If you are building PEM stacks, start with Pt/C, IrOx-coated titanium, and RuOx-coated titanium. If you are working alkaline or AEM, look at Ni/C and CoFeOx first. For SOFC/SOEC, the NiO/YSZ family plus an LSC or LSCF perovskite air electrode is the standard pairing — pair these with our electrolyte powders and membranes and supporting electrolyzer and fuel-cell components to complete the cell.