SOLAR H2
SOLAR H2Convert Sunlight to Hydrogen with IONZERA Membranes
Solar PV provides the cheapest electricity in history. IONZERA-equipped alkaline electrolysers convert this abundant energy into green hydrogen with maximum efficiency.
Membrane Cross-Section
PSU-TiO₂-GOMaximize Solar Utilization
IONZERA's low resistance means less energy lost as heat in the membrane, converting more of each solar kWh into hydrogen chemical energy.
Handle Solar Variability
Solar output follows a daily curve and varies with cloud cover. IONZERA's high wettability and stable pore structure maintain performance across the variable load profile.
Ideal for Sun-Belt Projects
The world's best solar resources overlap with regions served by G-Hexa's India-based manufacturing, including India, the Middle East, Australia, and North Africa.
Solar PV Plus Electrolysis
Solar photovoltaic electricity has become the cheapest source of new electricity generation in most of the world, with levelized costs below $30/MWh in favorable locations. Pairing solar PV with alkaline electrolysis is the most direct pathway to low-cost green hydrogen production. However, extracting maximum value from solar-coupled electrolysis requires membranes optimized for the specific characteristics of solar power: high efficiency at variable loads, daily cycling, and extended idle periods overnight.
IONZERA's material properties are well-suited to solar-coupled operation. The hydrophilic PSU-TiO2-GO surface maintains electrolyte wetting even after overnight idle periods, enabling rapid morning startup without prolonged rewetting. The low area resistance maximizes hydrogen production during peak solar hours when the most electricity is available.
Optimizing Solar-to-H2 Conversion
The overall solar-to-hydrogen efficiency depends on both the PV system and the electrolyser. IONZERA improves the electrolyser component of this chain:
Nanocomposite Structure
PSU-TiO₂-GOLower Resistance
Thinner Profile
Sun-Belt Green Hydrogen Projects
The world's largest planned green hydrogen projects are concentrated in sun-belt regions: India, the Middle East, North Africa, Chile, and Australia. These regions combine exceptional solar resources with growing hydrogen demand for domestic industry and export. IONZERA's manufacturing base in India provides a logistics advantage for serving these key markets, with shorter shipping times and competitive pricing from G-Hexa.
Area Resistance
3x LOWERThickness
20% THINNER9-day solar-coupled operation with our Electrodes
Our bifunctional NiCo electrode (on Ni foam, electroless-deposited) was tested in an AEM cell driven directly by a PV-irradiance-derived current schedule. Solar radiation data from sunrise to sunset was sampled, converted into a current-density profile peaking near 570 mA/cm2, and applied to the cell for nine continuous days at 40 deg C in 30 wt% KOH. The cell voltage tracked the input profile without offset and showed no measurable cycle-over-cycle drift on the electrode.
The run used a commercial Zirfon separator (500 um) as the membrane reference. Pairing the same electrode with IONZERA - our own next-gen separator at 0.09-0.1 ohm-cm2 - reduces the membrane voltage drop further at the same current density, directly improving the kWh-per-kg-H2 number on PV-coupled green-hydrogen systems. See the full electrode product page at /electrodes.
- Daily ramp-up, ramp-down, and overnight rest cycles do not compromise the NiCo electrode or the Zirfon separator.
- Bifunctional electrode tolerates the full transient envelope of direct PV-electrolyzer coupling without a battery buffer.
- Same electrode is used on both anode and cathode - a single product line for solar-coupled hydrogen plants.
Validation data
PV-derived current schedule · 9 days · our NiCo electrode
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