PEM water electrolysis hydrogen production equipment

PEM hydrogen generator powered by renewable energy for green hydrogen plant

PEM electrolyzer stack for green hydrogen production

PEM Hydrogen Production Equipment

• Solid polymer electrolyte (PEM), pure water as the sole feedstock — no alkali, no corrosive media, environmentally clean.
• Current density up to 1–1.5 A/cm² (commercial), with R&D targets reaching 5 A/cm²; compact modular stack design, customizable.
• Excellent proton conductivity, low gas crossover, outstanding electrochemical stability and mechanical strength; cumulative service life up to 15 years.
• Warm start in seconds, cold start < 10 min; load range 0%–150%, ideal for fluctuating renewable energy sources.
• Three-tier safety: fail-safe shutdown within seconds of power loss; 50% LFL combustible gas sensor alarm interlock; dual hydrogen leak detectors + real-time anode O₂/H₂ monitoring.
• One-key start/stop with full PLC automation; real-time monitoring of pressure, level, temperature, and conductivity; remote monitoring and unattended operation, low O&M cost.
• Main electrical cabinet sited outside the hazardous zone with explosion-proof certification; all electrolyzer fluid-path materials are anti-oxidation, anti-hydrogen-embrittlement, and leak-proof grade.
• Certified to GB/T 37562-2019 and GB/T 37563-2019; products comply with national and industry standards for hydrogen generation equipment.

Inquiry Now Download PDF

Estimated PEM Hydrogen Generator Price

Company*

Email*

Telephone*

Name*

Flow rate (Nm³/h)

Purity (%)

Pressure (MPa)

Altitude (m)

Ambient temperature (°C)

Voltage and frequency (V/Hz)

Application field

Existing compressed air system

YES NO

Pressure (MPa)

Flow rate (Nm³/h)

GET A QUOTE!

Product & Technical Features

Three-tier Safety
- Fail-safe shutdown within seconds of power loss; 50% LFL combustible gas sensor alarm interlock; dual hydrogen leak detectors + real-time anode O₂/H₂ monitoring.
Full Auto Operation
- One-key start/stop with full PLC automation; real-time monitoring of pressure, level, temperature, and conductivity; remote monitoring and unattended operation, low O&M cost.
Explosion-proof Safety
- Main electrical cabinet sited outside the hazardous zone with explosion-proof certification; all electrolyzer fluid-path materials are anti-oxidation, anti-hydrogen-embrittlement, and leak-proof grade.
Standard Certified
- Certified to GB/T 37562-2019 and GB/T 37563-2019; products comply with national and industry standards for hydrogen generation equipment.

Core Advantages

Safe & Eco-Friendly

No corrosive liquid electrolyte, zero leakage risk, zero emissions during operation. Main electrical cabinet outside the hazardous zone for absolute safety.
High Integration

Modular skid-mounted design with small footprint and short installation and commissioning cycle; scalable from lab-scale to industrial capacity.
Strong Dynamic Response

Millisecond-level power tracking capability, perfectly matching the fluctuating output of wind and solar power sources.
Smart Management

Digital control, remote monitoring, and unattended operation minimize staffing requirements and lifecycle costs.
Stable Output

Advanced electrolyzer technology verified across industries including semiconductors, power plants, energy, and chemicals — stable service for diverse production environments.
Wide Power Adaptability

Single-unit hydrogen output from 0.01 Nm³/h to 300 Nm³/h; multi-unit parallel configuration available for larger demand.
Higher Purity

Constant-temperature pure water feed, optimized gas-liquid separation, and in-line purification deliver hydrogen purity ≥ 99.999% (up to 99.9999% in high-spec configurations).
vs. Alkaline Electrolysis (AWE)

Higher current density, faster start, wider load range (0–150% vs 30–100%), higher purity, no alkali hazard, no asbestos diaphragm, longer membrane life — overall lifecycle cost advantage.

Product Specifications

Model	Hydrogen production (m3/h)	Oxygen production (m3/h)	Hydrogen purity - Before purification (V/V)	Oxygen purity - Before purification (V/V)	Hydrogen purity - after purification (V/V)	Operating load	Work pressure (MPa)	Working temperature (°C)	Direct current power consumption (kW·h/m3H2)	Hydrogen gas moisture content (g/m³)	Hydrogen alkali content (mg/m3)	Alkali solution concentration
HYH-20	20	10	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-30	30	15	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-60	60	30	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-100	100	50	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-200	200	100	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-300	300	150	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-400	400	200	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	54±2	≤4.3	≤4	≤1	30% KOH
HYH-500	500	250	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-600	600	300	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-800	800	400	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-1000	1000	500	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-1200	1200	600	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-1500	1500	750	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5~2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-1800	1800	900	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5-2.5	95±5	≤4.3	≤4	≤1	30% KOH
HYH-2000	2000	1000	≥99.8%	≥99.2%	≥99.999%	50%-100%	1.5-2.5	95±5	≤4.3	≤4	≤1	30% KOH

less

Working Principle

Basic Principle

The PEM pure water hydrogen generation equipment uses Proton Exchange Membrane (PEM) water electrolysis technology. With pure deionized water as the sole feedstock and DC power as the energy source, water molecules are electrochemically split into hydrogen and oxygen. The entire process is clean and pollution-free — no chemical electrolyte is required.

Electrolyzer Structure

The electrolyzer adopts a multi-cell stacked structure: cathode plate → cathode sealing frame → cathode cavity → cathode current collector → CCM MEA (Membrane Electrode Assembly) → anode current collector → anode cavity → anode sealing frame → anode plate. The compact, modular architecture is customizable and scalable to meet varying production capacity requirements.

Electrochemical Reactions

Under DC power, the following electrochemical reactions occur on both sides of the electrolyzer:

(Anode (Oxidation): 2H₂O → O₂↑ + 4H⁺ + 4e⁻)

Water molecules are oxidized at the anode, releasing oxygen, protons (H⁺) and electrons. Protons migrate through the proton exchange membrane toward the cathode under the electric field.

(Cathode (Reduction): 4H⁺ + 4e⁻ → 2H₂↑)

Protons arriving at the cathode are reduced by gaining electrons, generating high-purity hydrogen. The PEM allows only protons to pass through, effectively preventing H₂/O₂ mixing and ensuring high hydrogen purity.

(Overall Reaction: 2H₂O → 2H₂↑ + O₂↑)

Supporting Systems

Rectifier Power Supply System: Converts AC to DC; precisely controls electrolyzer current and power.
Water Circulation & Purification System: Maintains feed water quality (conductivity < 10 μS/cm) and removes heat generated during electrolysis.
Thermal Management System: Controls electrolyzer temperature via heat exchangers and cooling circuits, keeping the MEA within the optimal temperature range.
Gas-Liquid Separation Unit: Separates entrained moisture from hydrogen (cathode) and oxygen (anode) streams, ensuring clean and dry gas output.
PLC Control & Safety Interlock System: Fully automatic monitoring of pressure, level, temperature, and conductivity; multiple safety interlocks; supports remote monitoring and unattended operation.

Key Application Scenarios

PEM pure water hydrogen generation equipment, with its high purity, fast response, modular design, and clean operation, is widely used across renewable energy, industrial gas, transportation, research, and many other fields.

Renewable Energy / Green Hydrogen Production & Storage

Coupled with wind and solar power stations to produce green hydrogen from curtailed electricity; enables efficient renewable energy storage. Supports "Power-to-Hydrogen-to-Power" conversion for grid peak shaving and valley filling.
Semiconductor & Electronics Industry

Supplies high-purity hydrogen for semiconductor manufacturing processes including atmosphere reduction, thin-film deposition, and epitaxial growth; also for LED and GaN device production.
Power Plant Generator Cooling

Large generators use hydrogen cooling (thermal conductivity ~7× air). PEM on-site hydrogen generation replaces high-pressure cylinders, providing a safer and more stable supply.
Synthetic Diamond (CVD Diamond)

CVD diamond synthesis requires large volumes of high-purity hydrogen as carrier and reaction gas. PEM on-site generation ensures a stable, continuous supply for uninterrupted production.
Hydrogen Refueling Stations / Fuel Cell Vehicles

PEM electrolyzers serve as the core production unit in hydrogen refueling stations, directly generating high-pressure hydrogen (compressible to 35–70 MPa) for fuel cell vehicles and hydrogen rail transit.
Metallurgy — Green Hydrogen Steelmaking

Hydrogen replaces coke as the reductant in Direct Reduced Iron (DRI) processes, enabling low-carbon steelmaking and significantly reducing CO₂ emissions.
Others

Chemical & Petrochemical Industry; Float Glass Production; Research Institutes & Laboratories; Pharmaceutical & Fine Chemical Synthesis; Military & Special Applications; Demonstration & Exhibition Projects.