A team of researchers led by Zhifeng Ren, director of the Texas Center for Superconductivity at UH, has reported an oxygen evolving catalyst that takes just minutes to grow at room temperature and is capable of efficiently producing both clean drinking water and hydrogen from seawater.
Fast, One-Step Assembly at Room Temperature Yields High Efficiency at Low Cost
Seawater makes up about 96% of all water on earth, making it a tempting resource to meet the world’s growing need for clean drinking water and carbon-free energy. And scientists already have the technical ability to both desalinate seawater and split it to produce hydrogen, which is in demand as a source of clean energy.
But existing methods require multiple steps performed at high temperatures over a lengthy period of time in order to produce a catalyst with the needed efficiency. That requires substantial amounts of energy and drives up the cost.
Researchers from the University of Houston have reported an oxygen evolving catalyst that takes just minutes to grow at room temperature on commercially available nickel foam. Paired with a previously reported hydrogen evolution reaction catalyst, it can achieve industrially required current density for overall seawater splitting at low voltage. The work is described in a paper published in Energy & Environmental Science.
Zhifeng Ren, director of the Texas Center for Superconductivity at UH (TcSUH) and corresponding author for the paper, said speedy, low-cost production is critical to commercialization.
“Any discovery, any technology development, no matter how good it is, the end cost is going to play the most important role,” he said. “If the cost is prohibitive, it will not make it to market. In this paper, we found a way to reduce the cost so commercialization will be easier and more acceptable to customers.”
Ren’s research group and others have previously reported a nickel-iron-(oxy)hydroxide compound as a catalyst to split seawater, but producing the material required a lengthy process conducted at temperatures between 300 Celsius and 600 Celsius, or as high as 1,100 degrees Fahrenheit. The high energy cost made it impractical for commercial use, and the high temperatures degraded the structural and mechanical integrity of the nickel foam, making long-term stability a concern, said Ren, who also is M.D. Anderson Professor of physics at UH.
To address both cost and stability, the researchers discovered a process to use nickel-iron-(oxy)hydroxide on nickel foam, doped with a small amount of sulfur to produce an effective catalyst at room temperature within five minutes. Working at room temperature both reduced the cost and improved mechanical stability, they said.
“To boost the hydrogen economy, it is imperative to develop cost-effective and facile methodologies to synthesize NiFe-based (oxy)hydroxide catalysts for high-performance seawater electrolysis,” they wrote. “In this work, we developed a one-step surface engineering approach to fabricate highly porous self-supported S-doped Ni/Fe (oxy)hydroxide catalysts from commercial Ni foam in 1 to 5 minutes at room temperature.”
In addition to Ren, co-authors include first author Luo Yu and Libo Wu, Brian McElhenny, Shaowei Song, Dan Luo, Fanghao Zhang and Shuo Chen, all with the UH Department of Physics and TcSUH; and Ying Yu from the College of Physical Science and Technology at Central China Normal University.
Ren said one key to the researchers’ approach was the decision to use a chemical reaction to produce the desired material, rather than the energy-consuming traditional focus on a physical transformation.
“That led us to the right structure, the right composition for the oxygen evolving catalyst,” he said.
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
Hydrogen production
- Hungarian Group Inaugurates Green Hydrogen Production Project
A Hungarian company that operates refineries and petrochemical plants, and runs service stations across Central and Eastern Europe, said it is set to ...
- Cost-effective nanorod electrodes for molecular hydrogen production
Associate Professor of Electrical and Computer Engineering Technology Dr. Iulian Gherasoiu and peers have published research in the Journal of Applied Electrochemistry titled "MoVN-coated MoNi4-MoO2 ...
- Hydrogen may disappear from EPA’s power plant rule. Here’s what that means.
The agency will likely choose a different technology to underpin pollution standards for new "intermediate" natural gas plants.
- Linde to scale-up green hydrogen production in Brazil
In 2022, White Martins became the first company to produce industrial-scale green hydrogen with an international certification in South America at its plant in Pernambuco. A study by McKinsey ...
- This Startup With A Better Way To Fuel Hydrogen Trucks Snags Its First Big Fundraise
Verne has raised a total of $15.5 million to help get its cheaper, lighter tanks and hydrogen fueling system out of the lab and into production.
Go deeper with Google Headlines on:
Hydrogen production
[google_news title=”” keyword=”Hydrogen production” num_posts=”5″ blurb_length=”0″ show_thumb=”left”]
Go deeper with Bing News on:
Hydrogen production from seawater
- Boeing-Backed Startup to Launch World’s Largest Seawater-to-Fuel Facility: Promising Innovation Despite Environmental Challenges
Equatic, a forward-thinking startup headquartered in California, stands at the forefront of environmental innovation, pioneering a revolutionary technology that addresses two pressing global ...
- Water scarcity and clean energy collide in South Texas
A high-tech chemical company has purchased the last available water in the Nueces River to make hydrogen and ammonia for export.
- $59.1m for hydrogen and green metals commercialisation
The government’s clean energy funding agency has committed $59.1 million to renewable hydrogen and low emissions iron and steel projects, surprising applicants with almost 20 per cent more than ...
- University of Adelaide Awarded Medal for Pioneering Work in Green Hydrogen Production
The pioneering research being undertaken at the University of Adelaide by one of Australia’s leading young chemical engineers has been recognised by the Australian Academy of Science (AAS).Professor Y ...
- Current Climate: $6 Billion To Turn Heavy Industry Green
Steel manufacturer Cleveland-Cliffs will get up to $500 million to replace a large coal-consuming blast furnace in Middletown, Ohio, with a hydrogen-ready direct reduced ... atoms of metals out of the ...
Go deeper with Google Headlines on:
Hydrogen production from seawater
[google_news title=”” keyword=”Hydrogen production from seawater” num_posts=”5″ blurb_length=”0″ show_thumb=”left”]