Elektrolisis Air PEM untuk Hidrogen Hijau

Memisahkan air dengan listrik terbarukan untuk bahan bakar bebas karbon

Energy & Battery Technology Commercial Production $3 billion

Ikhtisar

Proton exchange membrane (PEM) electrolysis splits water into hydrogen and oxygen using renewable electricity and a solid polymer electrolyte membrane. This technology produces 'green hydrogen' with zero direct CO₂ emissions when powered by wind or solar energy. PEM electrolyzers offer fast response times (seconds), high current density, compact design, and the ability to operate at differential pressure. Global installed PEM electrolysis capacity is growing rapidly from under 1 GW to a projected 100+ GW by 2030.

Proses Kimia

Deionized water is fed to the anode side of a PEM electrolyzer cell stack. At the anode, water is oxidized to oxygen, protons, and electrons using an IrO₂ catalyst. Protons migrate through the Nafion membrane to the cathode, where they are reduced to hydrogen gas on a Pt/C catalyst. The process operates at 50-80 degrees C and 30-80 bar, producing hydrogen at >99.999% purity without further purification.

Anode: 2H₂O → O₂ + 4H⁺ + 4e⁻ (oxygen evolution, IrO₂ catalyst)
Cathode: 4H⁺ + 4e⁻ → 2H₂ (hydrogen evolution, Pt/C catalyst)
Overall: 2H₂O → 2H₂ + O₂ (ΔG = +237 kJ/mol, E° = 1.23 V)

Bahan Baku

  • Deionized water (H₂O) — Water treatment (Feedstock (only consumed input))
  • Renewable electricity — Wind, solar, hydro (Energy source (50-55 kWh/kg H₂))
  • Nafion membrane (perfluorosulfonic acid) — Chemours/Gore specialty polymers (Proton conductor and gas separator)

Produk Akhir

  • Green hydrogen (H₂) — Fuel cells, ammonia, steel, chemicals, energy storage (>99.999% purity, zero-carbon when renewable-powered)
  • Oxygen (O₂) — Medical, industrial, or vented (High-purity byproduct)
<path stroke-linecap="round" stroke-linejoin="round" d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126zM12 15.75h.007v.008H12v-.008z" />

Environmental Impact

Green hydrogen from PEM electrolysis produces zero direct CO₂ emissions. Life cycle emissions depend entirely on the electricity source. Water consumption is approximately 9 liters per kg H₂. The main environmental concern is the use of rare and expensive platinum group metals (Pt, Ir) in catalysts and perfluorinated membrane materials.

Pertimbangan Keselamatan

Inovasi Terbaru

Anion exchange membrane (AEM) electrolysis eliminates the need for iridium and platinum catalysts using non-precious metal catalysts.
Solid oxide electrolysis (SOEC) at 700-850 degrees C achieves higher efficiency by utilizing waste heat.
Direct seawater electrolysis is being developed to eliminate deionization costs.

Skala Produksi

100000

ton/tahun

$3 billion

nilai pasar

Lebih banyak di %(name)s Energy & Battery Technology

Ekstraksi Litium dari Air Garam untuk Produksi Baterai

Global Industrial Scale

Elektrokimia Sel Bahan Bakar Hidrogen (PEMFC)

Commercial Production

Manufaktur Sel Surya Silikon Fotovoltaik

Global Industrial Scale

Pengayaan Bahan Bakar Uranium dengan Sentrifugal Gas

Global Industrial Scale

Produksi Biodiesel dengan Transesterifikasi

Global Industrial Scale

Produksi Biogas dengan Pencernaan Anaerobik

Global Industrial Scale

Produksi Hidrogen dengan Steam Methane Reforming

Global Industrial Scale

Frequently Asked Questions

What industry uses Elektrolisis Air PEM untuk Hidrogen Hijau?
Elektrolisis Air PEM untuk Hidrogen Hijau is used in the energy & battery technology sector at commercial production scale.
What process is involved in Elektrolisis Air PEM untuk Hidrogen Hijau?
Deionized water is fed to the anode side of a PEM electrolyzer cell stack. At the anode, water is oxidized to oxygen, protons, and electrons using an IrO₂ catalyst. Protons migrate through the Nafion membrane to the cathode, where they are reduced to hydrogen gas on a Pt/C catalyst. The process oper
What is the economic significance of Elektrolisis Air PEM untuk Hidrogen Hijau?
Elektrolisis Air PEM untuk Hidrogen Hijau has a market value of $3 billion and annual production of 100,000 tons.
What is the environmental impact of Elektrolisis Air PEM untuk Hidrogen Hijau?
Green hydrogen from PEM electrolysis produces zero direct CO₂ emissions. Life cycle emissions depend entirely on the electricity source. Water consumption is approximately 9 liters per kg H₂. The main environmental concern is the use of rare and expensive platinum group metals (Pt, Ir) in catalysts
What raw materials are used in Elektrolisis Air PEM untuk Hidrogen Hijau?
The main raw materials include: Deionized water (H₂O), Renewable electricity, Nafion membrane (perfluorosulfonic acid).