Key Findings
Chemical engineers at the University of Groningen have developed a Protonic Ceramic Electrolyzer Cell (PCEC) that doubles the hydrogen production rate compared to earlier designs. The modified cell operated continuously for more than 500 hours with no loss in stability or performance, converting over 95 percent of the electric current directly into hydrogen.
Technical Details
The system utilizes steam instead of liquid water, operating at intermediate temperatures between 400°C and 650°C. This approach reduces the electrical energy required to break chemical bonds. The process involves a ceramic membrane that allows only positively charged hydrogen ions (protons) to pass through its pores, attracted by a negative charge on the opposite side to reform hydrogen (H2). This selective permeability keeps the produced hydrogen separate from other atoms, eliminating the need for subsequent purification stages.
To overcome the challenge of electrode degradation in corrosive, high-heat environments, lead researcher Dr. Vassilis Kyriakou and his team designed a self-assembling electrode using a perovskite oxide matrix. When heated in ambient air, ions move between the electrode and membrane, causing praseodymium oxide nanoparticles to sprout across the surface. The team further enhanced performance by applying an acid wash to the surface, which increased the number of active catalyst sites.
Background and Context
Current industrial hydrogen production primarily relies on stripping hydrogen from natural gas, a process that releases significant amounts of carbon dioxide. This gas is essential for refining fuels, manufacturing fertilizers, and producing plastics. While standard liquid electrolyzers exist, they require substantial electrical energy to heat the water and power the splitting process.
Significance and Outlook
The PCEC operates at temperatures typical of existing chemical factories, allowing manufacturers to utilize factory waste heat for clean “Power-to-X” processes. By reducing reliance on fossil fuels and eliminating costly purification steps, this technology provides a more sustainable and efficient pathway for heavy industry hydrogen production.
Source: https://interestingengineering.com/innovation/ceramic-cell-delivers-double-clean-hydrogen
Get our weekly technology intelligence — free
Receive an infographic that lets you judge at a glance whether each field’s analysis report is worth reading.
Subscribe Free — Weekly Tech Intelligence
By subscribing, you’ll receive Troy-Technical’s weekly technology intelligence newsletter.
- Your email and selected fields are used only to deliver the newsletter.
- We never share your information with third parties.
- You can unsubscribe anytime via the link in each email.
See our Privacy Policy for details.
Takes about a minute · Unsubscribe anytime
