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K-수소 아이콘, 디 올 뉴 넥쏘로 새출발 < 기획•연재 < FOCUS < 기사본문 - 월간수소경제
K-수소 아이콘, 디 올 뉴 넥쏘로 새출발
수소, 미래 세대를 위한 기회미국의 25% 상호관세가 부과된 4월 3월, 경기도 고양시 킨텍스에서 ‘2025 서울모빌리티쇼’ 미디어데이 행사가 열렸다. 호세 무뇨스 현대차 사장은 무대에 올라 “변
www.h2news.kr
Air Liquide has officially become the first supplier in Germany to receive Renewable Fuels of Non-Biological Origin (RFNBO) certification for its renewable hydrogen. This pivotal certification, granted to the hydrogen produced by the company's PEM electrolyzer "Trailblazer" located in Oberhausen, marks a significant advancement in Germany's renewable hydrogen market.
By achieving RFNBO status, Air Liquide enables its hydrogen to be officially recognized as a greenhouse gas-reducing fuel, directly assisting mobility and industrial sectors—including refineries and chemical producers—in meeting their ambitious climate objectives.
Air Liquide's Chairman of the Supervisory Board, Gilles Le Van, expressed gratitude towards all involved parties: "Our Chairman of the Supervisory Board, Gilles Le Van, thanked the dedicated Air Liquide teams, the Federal Environment Agency for their constant cooperation and DEKRA Germany for their professional and efficient support in achieving this goal."
With this certification, Air Liquide continues to set precedents and solidify its position at the forefront of Germany’s evolving hydrogen economy, remaining true to the pioneering spirit suggested by the electrolyzer’s name, "Trailblazer."
Source: Fuel Cells Works
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China achieves breakthrough in solar-powered water splitting for hydrogen production
SHENYANG — French sci-fi author Jules Verne predicted about 150 years ago that water would become the fuel of the future. Today, scientists are striving to turn this fantasy into reality.
Chinese researchers recently achieved a breakthrough in “photocatalytic water splitting for hydrogen production.” By performing “structural reshaping” and “element substitution” on a semiconductor material, they significantly enhanced the efficiency of converting water into clean hydrogen energy by using sunlight.
Current solar-driven hydrogen production primarily relies on two methods — one uses solar panels to generate electricity for water electrolysis, which requires complex and costly equipment, while the other employs semiconductor materials as catalysts to directly split water molecules under sunlight, according to Liu Gang, director of the Institute of Metal Research of the Chinese Academy of Sciences and leader of the research team.
The key to directly splitting water with sunlight lies in a material called titanium dioxide. When exposed to sunlight, it functions like a microscopic power plant, generating energized electron-hole pairs that break down water molecules into hydrogen and oxygen, Liu explained.
However, traditional titanium dioxide has a critical flaw — its internal structure resembles a maze, causing the activated electrons and holes to collide randomly and recombine and annihilate within a millionth of a second. Additionally, the high-temperature fabrication process of the material often leads to oxygen atom loss, creating positively charged “trap zones” that capture electrons.
Liu’s team addressed these issues by introducing scandium, a rare-earth element neighboring titanium on the periodic table, to restructure the material.
Scandium ions, similar in size to titanium ions, fit perfectly into the titanium dioxide lattice without causing structural distortion. Their stable valence neutralizes the charge imbalance caused by oxygen vacancies, eliminating “trap zones.” Moreover, scandium atoms reconstruct the crystal surface, creating specific facets that act like “electronic highways and overpasses,” allowing electrons and holes to escape the maze efficiently.
Through precise control, the research team successfully developed a specialized titanium dioxide material with significantly enhanced performance — its utilization of ultraviolet light exceeded 30 percent, and its hydrogen production efficiency under simulated sunlight was 15 times higher than previously reported titanium dioxide materials, setting a new record, Liu stated.
Liu said,
If used to create a one-square-meter photocatalytic material panel, around 10 liters of hydrogen can be produced in one day of sunlight
The achievement was published in the latest issue of the Journal of the American Chemical Society.
Liu revealed,
We aim to further improve the technology to enable efficient utilization of visible light in sunlight,
He also noted that China currently accounts for over 50 percent of global titanium dioxide production, supported by a robust industrial chain. Additionally, China ranks among the world’s leaders in terms of scandium reserves.
Liu added,
With continued advancements in photocatalytic water-splitting efficiency, this technology holds promise for industrial application, and could drive the transformation of energy systems,
Source: Hydrogencentral
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A Cornell-led collaboration has hit the trifecta of sustainability technology: The group developed a low-cost method to produce carbon-free “green” hydrogen via solar-powered electrolysis of seawater. A happy byproduct of the process? Potable water.
The team’s hybrid solar distillation-water electrolysis (HSD-WE) device, reported April 9 in Energy and Environmental Science, currently produces 200 milliliters of hydrogen per hour with 12.6% energy efficiency directly from seawater under natural sunlight. The researchers estimate that within 15 years, the technology could reduce the cost of green hydrogen production to $1 per kilogram – a key step in achieving net-zero emissions by 2050.
“Water and energy are both critically needed for our everyday life, but typically, if you want to produce more energy, you have to consume more water,” said Lenan Zhang, assistant professor in the Sibley School of Mechanical and Aerospace Engineering in Cornell Engineering, who led the project. “On the other hand, we need drinking water, because two-thirds of the global population are facing water scarcity. So there is a bottleneck in green hydrogen production, and that is reflected in the cost.”
Green hydrogen is produced by splitting “high purity” – i.e., deionized – water molecules into hydrogen and oxygen through electrolysis. The high cost results from the massive amount of clean water that the process requires; the cost of manufacturing green hydrogen can be roughly 10 times higher than that of regular hydrogen.
“That’s why we came up with this technology,” Zhang said. “We thought, ‘OK, what is the most abundant resource on the Earth?’ Solar and seawater are basically infinite resources and also free resources.”
As a research scientist at the Massachusetts Institute of Technology, Zhang began exploring ways to use solar power to convert seawater into potable water through thermal desalination – an effort heralded by Time magazine as one of the “Best Inventions of 2023.” By the time Zhang arrived at Cornell in 2024, he had received support from the National Science Foundation to expand the technology to produce green hydrogen.
Working with researchers from MIT, Johns Hopkins University and Michigan State University, Zhang’s team devised a 10 centimeter by 10 centimeter prototype device that leverages one of the drawbacks of photovoltaics: their relatively low efficiency. Most PV cells can only convert up to approximately 30% of solar energy into electricity, and the rest dissipates as waste heat. But the team’s device is able to harness most of that waste heat and uses it to warm the seawater until it evaporates.
“Basically, the short-wavelength sunlight interacts with the solar cell to generate electricity, and the longer wavelength light generates the waste heat to power the seawater distillation,” Zhang said. “This way, all the solar energy can be fully used. Nothing is wasted.”
In order for the interfacial thermal evaporation to occur, there is a crucial component, called a capillary wick, that traps the water into a thin film that is in direct contact with the solar panel. This way, only the thin film needs to be heated, rather a large volume of water, and the evaporation efficiency is boosted to more than 90%. Once the seawater evaporates, the salt is left behind, and the desalinated vapor condenses into clean water, which passes through an electrolyzer that splits the water molecules into hydrogen and oxygen.
“This is a highly integrated technology. The design was challenging because there’s a lot of complex coupling: desalination coupled with electrolysis, electrolysis coupled with the solar panel, and the solar panel coupled with desalination through solar, electrical, chemical and thermal energy conversion and transport,” Zhang said. “Now, for the first time, we can produce a sufficient amount of water that can satisfy the demand for hydrogen production. And also we have some additional water for drinking. Two birds, one stone.”
The current cost of green hydrogen production is approximately $10 per kilogram, according to Zhang, but given the plenitude of sunlight and seawater, over the course of 15 years his team’s device could bring the cost down to $1 per kg. Zhang also sees the potential of incorporating the technology into solar farms to cool PV panels, which would improve their efficiency and prolong their lifespan.
“We want to avoid carbon emission, avoid pollution. But meanwhile, we also care about the cost, because the lower cost we have, the higher market potential for large-scale adoption,” he said. “We believe there is a huge potential for future installation.”
The paper’s lead author is Xuanjie Wang of Lehigh University. Co-authors include doctoral student Yipu Wang, M.S. ’24; postdoctoral researcher Jintong Gao; Yayuan Liu of Johns Hopkins University; and Xinyue Liu of Michigan State University.
The research was supported by the National Science Foundation.
Sunlight and Seawater Lead to Green Hydrogen, Clean Water - Fuelcellsworks
Cornell-led collaboration develops low-cost method to produce carbon-free green hydrogen and potable water via solar-powered electrolysis of seawater.
fuelcellsworks.com
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| China achieves breakthrough in solar-powered water splitting for hydrogen production (0) | 2025.04.11 |
| 月面で再生エネルギー実現へ…本田技研、「水電解セル」ISSで試験 (0) | 2025.04.11 |
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本田技術研究所（埼玉県和光市、大津啓司社長）は、開発中の循環型再生エネルギーシステムの水電解セルを国際宇宙ステーション（ＩＳＳ）で試験するため、米シエラスペース、米テックマスターズの両社と契約を締結した。月面での実用化を念頭に、微小重力環境下での技術信頼性を高める。試験の時期や期間は非公表。
同システムは独自の高圧水電解システムと、燃料電池システムを組み合わせたもの。太陽エネルギーと水から酸素、水素、電気を継続的に製造する。宇宙航空研究開発機構（ＪＡＸＡ）と共同研究・開発を進めていた。
２０２４年秋にホンダの米国現地法人内に宇宙関連の窓口部門を新設しており、今回の計画も同部門がマネジメントする。今後、新設した窓口部門を通じて米航空宇宙局（ＮＡＳＡ）など宇宙関連機関、企業との連携強化を目指す。
月面で再生エネルギー実現へ…本田技研、「水電解セル」ISSで試験｜ニュースイッチ by 日刊工業新聞社
月面で再生エネルギー実現へ…本田技研、「水電解セル」ISSで試験 ニュースイッチ by 日刊工業
本田技術研究所（埼玉県和光市、大津啓司社長）は、開発中の循環型再生エネルギーシステムの水電解セルを国際宇宙ステーション（ＩＳＳ）で試験するため、米シエラスペース、米テック
newswitch.jp
| China achieves breakthrough in solar-powered water splitting for hydrogen production (0) | 2025.04.11 |
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| Sunlight and Seawater Lead to Low-Cost Green Hydrogen, Clean Water (0) | 2025.04.11 |
| 大規模な水素混焼発電の実証を開始します (0) | 2025.04.10 |
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