Hydrogen
We develop AEM (anion exchange membrane) water electrolysis as one package — catalyst, electrode and bipolar plate — around precious-metal-free, large-area, corrosion-resistant design.
Precious-metal-free OER catalyst
Multi-cation columbite catalyst
Built without precious metals (Ir, Pt), this catalyst sharply lowers material cost and supply-chain risk — Fe, Mn, Nb and Ta are placed in an AB₂O₆ columbite structure to secure OER/HER activity and long-term stability.
Crystal Structure
1 nmAtomic Imaging (STEM)
10 1/nmCrystal Analysis (FFT)
Seawater electrolysis electrode
Columbite@NiOOH core–shell catalytic electrode
An interface-engineered catalyst designed to produce hydrogen from seawater without fresh water — the columbite core carries stability while the NiOOH shell carries oxygen evolution activity, raising OER selectivity and suppressing chlorine evolution and corrosion in seawater.
20 nmAEM electrolysis anode
Ni–Fe alloy electroplated catalytic electrode
A manufacturing technique that electroplates the catalyst layer directly onto a metal support instead of coating powder, mass-producing large-area anodes — pulse current controls composition, thickness and uniformity for MW-class stacks.
AEM metal bipolar plate
Nb–Ni high-corrosion-resistance metal bipolar plate
A low-cost metal bipolar plate that resists alkali and brine without titanium or precious-metal coating — Nb–Ni surface modification on SUS316 solves both the contact resistance of uncoated stainless and the cost burden of expensive coatings.
Electrolysis stack core components
Integrated AEM technology for KOH and seawater electrolysis
An integrated AEM water electrolysis technology that brings our own precious-metal-free catalyst, large-area electrode and corrosion-resistant bipolar plate together into a single cell and stack. The core stack components produced with it generate green hydrogen from seawater as well as from low-concentration KOH.
Research base and key papers
- ADV. ENERGY MATER. · 2025 · 15(24)Understanding the Metal-Center Mediated Adsorption and Redox Mechanisms in a FeMn(NbTa)₂O₆ Columbite Material for Anion Exchange Membrane Water Electrolyzers
- ADV. ENERGY MATER. · 2023Ruthenium Engineered A₂B₂O₆-Hybrid Columbite Ferrite for Bifunctional pH-Universal Water Splitting