CEMENT

CEMENT

Decarbonize Cement with Green Hydrogen

Cement production is responsible for approximately 8% of global CO2 emissions. Green hydrogen provides pathways for kiln fuel substitution and utilization of process CO2 emissions.

Membrane Cross-Section

PSU-TiO₂-GO
OH⁻OH⁻OH⁻PSU MatrixTiO₂GO SheetsPores350-410 μm

Kiln Fuel Switching

Green hydrogen can partially replace fossil fuels in cement kilns, directly reducing combustion-related CO2 emissions without major modifications to existing kiln systems.

CO2 Utilization Enabler

Cement plants produce concentrated CO2 from calcination. Green hydrogen enables conversion of this CO2 to synthetic fuels or chemicals via Power-to-X pathways.

Cost-Effective H2 Supply

IONZERA's 3x lower area resistance reduces the cost of green hydrogen, improving the economics of both fuel switching and CCU pathways for cement decarbonization.

The Cement Decarbonization Challenge

Cement is the most widely used construction material on Earth, with over 4 billion tonnes produced annually. The production process generates CO2 from two sources: combustion of fossil fuels to heat the kiln to approximately 1,450 degrees C, and the calcination reaction itself (CaCO3 to CaO + CO2). The calcination emissions cannot be eliminated by fuel switching alone, making cement one of the hardest-to-abate industrial sectors.

Green hydrogen addresses cement emissions through two complementary pathways: partial replacement of fossil kiln fuels with hydrogen, and utilization of captured CO2 by reacting it with green hydrogen to produce synthetic fuels or chemicals.

Hydrogen Pathways for Cement Plants

IONZERA-equipped electrolysers can support multiple decarbonization strategies for cement production:

Partial kiln fuel substitution with green hydrogen, reducing the combustion-related CO2 component
Oxy-fuel combustion using electrolysis byproduct oxygen to concentrate CO2 for capture
Methanation of captured CO2 using green hydrogen to produce synthetic natural gas
E-methanol production from cement plant CO2 and green hydrogen for use as fuel or chemical feedstock

Nanocomposite Structure

PSU-TiO₂-GO
OH⁻OH⁻OH⁻PSU MatrixTiO₂GO SheetsPores350-410 μm
3x

Lower Resistance

20%

Thinner Profile

India's Cement Industry

India is the world's second-largest cement producer, with over 350 million tonnes per year. As Indian cement companies face growing pressure to decarbonize, IONZERA, manufactured locally by G-Hexa, provides a domestic source for the efficient electrolyser membranes needed to produce green hydrogen at cement plant scale. This alignment between local membrane manufacturing and local cement industry demand creates a natural pathway for hydrogen adoption in Indian cement production.

Area Resistance

3x LOWER
Area Specific Resistance ComparisonIONZERA0.09-0.1 Ω·cm²Zirfon0.30 Ω·cm²00.10.20.3 Ω·cm²~3x Lower

Thickness

20% THINNER
Membrane Thickness ComparisonIONZERA350-410 μmZirfon500 μm500 μm scale20-30%thinnerThinner membrane = More compact stacks= Higher power density
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