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An alkaline water electrolyzer is a device that splits water into hydrogen and oxygen gas using electricity in a liquid alkaline solution of potassium hydroxide (KOH) or sodium hydroxide (NaOH).
It has two electrodes separated by a diaphragm that allows hydroxide ions (OH-) to go from one electrode to the other while preventing the resultant gases from mixing. The electrodes are often made of nickel-based metals, which are stable and efficient water-splitting catalysts.
Alkaline water electrolysis is an established technique that has been used in the chemical industry for decades and is capable of being fueled by renewable energy sources such as solar and wind. It has the potential to provide clean hydrogen fuel for use in transportation, power generation, and industrial.
Some of the advantages of alkaline water electrolysis are: It is a mature and safe technology that has been used for many industrial applications, It can scale up to large production capacities of hydrogen, It uses cheaper catalysts than other types of water electrolysis, such as nickel-based metals instead of platinum group metals.
It has higher durability due to an exchangeable electrolyte and lower dissolution of anodic catalyst Some of the disadvantages of alkaline water electrolysis are that it is very energy demanding with high capital investment, operation, and maintenance costs
It has a slightly higher power consumption than other types of water electrolysis, such as proton exchange membrane (PEM) electrolysis and electrolysis of water vapor It requires a high concentration of alkaline solution (20-40 wt.%) which can be corrosive and hazardous It operates at a low current density (0.2-0.4 A/cm 2 ) and a high cell voltage (1.8-2.40 V) which reduces the efficiency and performance of the system.
The Global Alkaline Water Electrolyzer market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
HyLYZER® – 1000 is a water electrolyzer system based on proton exchange membrane (PEM) water electrolysis technology. It is manufactured and marketed by Cummins Inc. According to the product specification sheet, some of the features of HyLYZER® – 1000 are: It can produce 1000 Nm3/h (2160 kg/day) of hydrogen with a delivery pressure of 30 bar g (435 psig) without a compressor.
It has a hydrogen quality of 99.99% dry basis, with optional higher purities available3 It has a DC power consumption at the stack of 40 to 50 kWh/kg (3.6 to 4.5 kWh/Nm3) and a system-specific consumption of ≤ 51 kWh/k It has an operating range of 5-125% and a part-load range of 20-40% It requires utilities such as electrical power, demineralized water, cooling water, HVAC, instrument air, and nitrogen for purge.
It has a total footprint (including maintenance area) of electrolyzer dimensions (L x W) = 8.4 m x 2.3 m (27.7 x 7.5 ft) and rectifier dimensions (L x W) = 4.5 x 2.5 m (14.8 x 8.2 ft) It is designed for indoor installation with a temperature range of 5°C to 40°C / 41°F to 104°F.
Nel Hydrogen is the recognized industry leader in alkaline and proton exchange membrane (PEM) water electrolysis with more than 3,500 electrolyzers installed around the globe.
PERIC is a state-level R&D institute in China with a huge manufacturing base for alkaline and PEM water electrolysis Cummins Inc., manufactures and markets HyLYZER® – 1000, a compact, modular water electrolyzer system based on PEM water electrolysis technology.
LONGi Hydrogen, which is a subsidiary of LONGi Green Energy Technology Co., Ltd. has produced a large-scale alkaline water electrolysis hydrogen production system.
McPhy, is a leader in high-pressure alkaline electrolysis and offers the widest range of electrolyzers on the market ThyssenKrupp, is a leading supplier of alkaline water electrolysis plants with over 600 plants installed worldwide and a capacity of over 10 GW.
