그린 수소를 위한 PEM 수전해

무탄소 연료를 위해 재생 가능 전력으로 물 분해하기

Energy & Battery Technology Commercial Production $3 billion

개요

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.

화학 공정

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)

원자재

  • 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)

최종 제품

  • 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)
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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.

안전 고려사항

최근 혁신

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.

생산 규모

100000

톤/년

$3 billion

시장 가치

더 보기: Energy & Battery Technology

에스테르 교환 반응에 의한 바이오디젤 생산

Global Industrial Scale

광전지 실리콘 태양전지 제조

Global Industrial Scale

혐기성 소화에 의한 바이오가스 생산

Global Industrial Scale

스팀 메테인 개질에 의한 수소 생산

Global Industrial Scale

전지 생산을 위한 염수에서 리튬 추출

Global Industrial Scale

기체 원심 분리에 의한 우라늄 연료 농축

Global Industrial Scale

수소 연료 전지(PEMFC) 전기화학

Commercial Production

Frequently Asked Questions

What industry uses 그린 수소를 위한 PEM 수전해?
그린 수소를 위한 PEM 수전해 is used in the energy & battery technology sector at commercial production scale.
What process is involved in 그린 수소를 위한 PEM 수전해?
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 그린 수소를 위한 PEM 수전해?
그린 수소를 위한 PEM 수전해 has a market value of $3 billion and annual production of 100,000 tons.
What is the environmental impact of 그린 수소를 위한 PEM 수전해?
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 그린 수소를 위한 PEM 수전해?
The main raw materials include: Deionized water (H₂O), Renewable electricity, Nafion membrane (perfluorosulfonic acid).