PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Atomically controlled MXenes enable cost-effective green hydrogen production

KIST researchers develop atomically controlled MXenes as water electrolysis catalyst support. Molybdenum-based MXene electrocatalyst support reduces the cost of green hydrogen production

Atomically controlled MXenes enable cost-effective green hydrogen production
2024-07-15
(Press-News.org) 137 countries around the world have signed a "net-zero" climate change agreement to end fossil fuel use and achieve zero carbon emissions by 2050. Hydrogen is being touted as the next green energy source because it emits only water and oxygen when utilized as an energy source. Hydrogen production methods are divided into gray hydrogen, blue hydrogen, and green hydrogen depending on the energy source and carbon emissions. Among them, green hydrogen production method is the most eco-friendly method that produces hydrogen without carbon emissions by electrolyzing water using green energy.

A research team led by Dr. Albert Sung Soo Lee of the Convergence Research Center for Solutions to Electromagnetic Interference in Future-Mobility and Materials Architecturing Research Center at Korea Institute of Science and Technology (KIST) with collaboration with Professor Chong Min Koo’s group at Sungkyunkwan University has developed an oxidatively stable molybdenum-based MXene as electrocatalyst support in anion exchange membrane water electrolyzers. As it is stable against oxidative high voltage conditions, if it is applied as a carrier for electrolysis catalysts, it can be used as an oxygen evolution reaction electrode material for green hydrogen production to reduce the cost of green hydrogen production.

The breakdown of water into hydrogen and oxygen molecules requires a high amount of energy. To reduce this initial reaction energy, a catalyst is used, and the smaller size of the catalyst, which is made up of tiny nanoscale particles, the larger the surface area, which allows the reaction to take place. However, over time, small catalyst particles can agglomerate, reducing the surface area and reducing the efficiency of hydrogen production. To prevent this, catalysts and supports are used together, and carbon is mainly used for the cathode, where hydrogen is produced, but when carbon is used in an oxidation reaction at the anode, it is oxidized to carbon dioxide. Thus a support with high oxidation resistance is required.

One material that can be used as a support is MXene. MXenes are nanomaterials composed of metal atoms (Ti, Mo, Hf, Ta, etc.) and carbon or nitrogen atoms, which show electrically conductive properties and have a 2D nanostructure suitable for catalyst support, making them favorable for hydrogen production. Titanium-based MXenes have been the most widely studied due to their high electrical conductivity. However, due to the atomic nature of titanium, which is easily oxidized in water, has led to the inherent disadvantage that the catalyst cannot maintain high electrical conductivity. To overcome this, the team designed a new anode catalyst that uses molybdenum-carbide based MXene as a support.

When the molybdenum-based MXene is utilized as a support, strong chemical bonds are created between the molybdenum atoms on the surface of the MXene and the active materials cobalt. The resulting chemical bonds increased the hydrogen production efficiency by about 2.45 times. In particular, the durability of the unit cell was improved by more than 10 times compared to the results of a recent titanium-based MXene, which lasted less than 40 hours. This is expected to reduce the cost of green hydrogen production and will be applied to large-scale hydrogen production plants and large-scale green hydrogen power stations in the future.

"By controlling the elements that make up MXene, we were able to find suitable candidates for green hydrogen production environments, and through this, we secured a stable MXene support in an oxidizing environment," said Dr. Albert Sung Soo Lee of KIST. "In the future, we will contribute to the revitalization of hydrogen-based economy by developing oxygen-generating electrode catalysts with catalytic efficiency and durability."

 

###

KIST was established in 1966 as the first government-funded research institute in Korea. KIST now strives to solve national and social challenges and secure growth engines through leading and innovative research. For more information, please visit KIST’s website at https://eng.kist.re.kr/

This research was supported by the National Research Council of Science and Technology (NST) grant by the Korea Government (MSIT) (CRC22031-000), Ministry of Science and ICT (Minister Lee Jong-Ho) under the Basic Science Research Program, as well as and KIST Young Fellow Program. These findings were published in the latest issue of the international journal Applied Catalysis B: Environment and Energy (IF: 20.2, top 0.6% in JCR).

END

[Attachments] See images for this press release:
Atomically controlled MXenes enable cost-effective green hydrogen production Atomically controlled MXenes enable cost-effective green hydrogen production 2 Atomically controlled MXenes enable cost-effective green hydrogen production 3

ELSE PRESS RELEASES FROM THIS DATE:

Survey finds most americans believe pain and urinary leakage is normal for women after having children

Survey finds most americans believe pain and urinary leakage is normal for women after having children
2024-07-15
Orlando, Fla - A new national survey by the Orlando Health Advanced Rehabilitation Institute finds most Americans believe it’s normal for women to experience pain, pressure and incontinence after having children. But experts say these are actually signs of pelvic floor issues, and while they are extremely common, affecting about a third of women, they are not normal.  “When we say it's not normal, what we mean is it's not something you should have to live with. It's something ...

Opioid prescribing to reduce overdoses, misuse

2024-07-15
New research aims to help reduce the quantity of unused prescription opioids after emergency department visits and lessen the risk of opioid misuse and overdose. The study is published in CMAJ (Canadian Medical Association Journal) https://www.cmaj.ca/lookup/doi/10.1503/cmaj.231640. VIEW EMBARGOED ARTICLE Overprescribing is linked to opioid misuse and overdose, with household supplies of opioids associated with an increased risk of overdose, as many people do not dispose of unused medications safely. In Canada, ...

Health research on South Asian communities must be led by South Asians

2024-07-15
Funding agencies in Canada need to review their policies for evaluating research proposals to ensure that South Asian research is conducted by South Asians, write authors in a commentary in CMAJ (Canadian Medical Association Journal) https://www.cmaj.ca/lookup/doi/10.1503/cmaj.231189 VIEW EMBARGOED ARTICLE Much of the health research conducted in Canada on South Asian diaspora communities has historically been marked by unequal power relations, rather than meaningfully engaging and benefitting these communities. As the largest and fastest growing diverse ...

Big boost for new epigenetics paradigm: CoRSIVs, first discovered in humans, now found in cattle

2024-07-15
A study published in Genome Biology opens new possibilities to improve production efficiency in the cattle industry and potentially animal agriculture more broadly. A team of researchers at Baylor College of Medicine, Cornell University and the USDA discovered that, like humans, cattle have CoRSIVs. CoRSIVs are regions of the genome carrying chemical markers on the DNA that provide information that may allow farmers to predict and select desirable cattle characteristics, such as milk production, female fertility and resistance to disease. “Most people know that each person ...

Cancer is the biggest health concern among the public, poll reveals

2024-07-15
Late detection biggest worry in relation to cancer diagnosis, with 55% of people wanting to see future advances in early cancer detection Public overwhelmingly support use of AI to tackle cancer 43% of people recognise major impact universities can have on reducing deaths from cancer Cambridge University partnering with NHS to build revolutionary new Cambridge Cancer Research Hospital Two-thirds of the public say they are very or somewhat worried about being told they have the disease – higher than ...

Doctors suffering burnout need compassion not blame, says top GP

2024-07-15
Doctors, nurses and other healthcare staff suffering burnout should be shown compassion and not blamed for being unwell, according to a leading GP. Clare Gerada says employers often treat physicians as ‘naughty schoolchildren’ when they go sick or suffer mental health problems. Professor Dame Gerada, past president of the Royal College of General Practitioners (RCGP), is calling for more comprehensive guidance that focuses on ‘kindness’ and ‘sensitivity’. The doctor, who helped found mental health charity, Doctors in Distress, addresses the need for major reform in a new book aimed at reforming care for doctors and nurses ...

Study on post-COVID-19 condition: Which factors have an impact on the risk

2024-07-14
Early on during the coronavirus pandemic, there were reports of cases of persistent post-infection symptoms. The World Health Organization (WHO) refers to such new or persistent symptoms twelve weeks after a corona infection that cannot be explained by other causes as a post-COVID-19 condition. In a recent study, scientists led by the University Medicine Halle evaluated the information from 109,707 participants in the German National Cohort (NAKO Gesundheitsstudie) on their self-reported health status with respect to post-infection symptoms. The survey took place in autumn 2022, in retrospect of the pandemic.  At the time of the survey, more than 80 percent of respondents had ...

Artificial intelligence outperforms clinical tests at predicting progress of Alzheimer’s disease

2024-07-13
Cambridge scientists have developed an artificially-intelligent tool capable of predicting in four cases out of five whether people with early signs of dementia will remain stable or develop Alzheimer’s disease. The team say this new approach could reduce the need for invasive and costly diagnostic tests while improving treatment outcomes early when interventions such as lifestyle changes or new medicines may have a chance to work best. Dementia poses a significant global healthcare challenge, affecting over 55 million people worldwide ...

ReMDO announces inaugural Piedmont Triad Regenerative Medicine Engine Ecosystem Summit in Winston-Salem, North Carolina

ReMDO announces inaugural Piedmont Triad Regenerative Medicine Engine Ecosystem Summit in Winston-Salem, North Carolina
2024-07-12
Winston-Salem, North Carolina – July 12, 2024 - The RegenMed Development Organization (ReMDO) invites researchers, industry and academia to the inaugural Piedmont Triad Regenerative Medicine Engine Ecosystem Summit (The Summit) on Monday, August 12th in Winston-Salem, North Carolina. Registration is open to new and current partners, with required onboarding for prospective organizations to be completed by August 12. The summit will consist of speaker sessions, discussion panels, breakouts, and networking events with complete details ...

HarvestHub app tackles supply chain, food insecurity issues

HarvestHub app tackles supply chain, food insecurity issues
2024-07-12
The COVID-19 pandemic infiltrated almost every aspect of society and life in 2020, even in ways people wouldn’t have immediately expected. Stores that typically have no problem stocking shelves were struggling to keep pace with the sudden demand for cleaning supplies along with everything from toilet paper to Sriracha chili sauce. While these issues aren’t as devastating as the larger health ramifications, they did shed new light on supply chain weaknesses and how that system adapts to rapid and vast market shifts. Factory closures ...

LAST 30 PRESS RELEASES:

Cooler heads prevail: New research reveals best way to prevent dogs from overheating

UC Riverside medical school develops new curriculum to address substance use crisis

Food fussiness a largely genetic trait from toddlerhood to adolescence

Celebrating a century of scholarship: Isis examines the HSS at 100

Key biomarkers identified for predicting disability progression in multiple sclerosis

Study: AI could lead to inconsistent outcomes in home surveillance

Study: Networks of Beliefs theory integrates internal & external dynamics

Vegans’ intake of protein and essential amino acids is adequate but ultra-processed products are also needed

Major $21 million Australian philanthropic investment to bring future science into disease diagnosis

Innovating alloy production: A single step from ores to sustainable metals

New combination treatment brings hope to patients with advanced bladder cancer

Grants for $3.5M from TARCC fund new Alzheimer’s disease research at UTHealth Houston

UTIA researchers win grant for automation technology for nursery industry

Can captive tigers be part of the effort to save wild populations?

The Ocean Corporation collaborates with UTHealth Houston on Space Medicine Fellowship program

Mysteries of the bizarre ‘pseudogap’ in quantum physics finally untangled

Study: Proteins in tooth enamel offer window into human wellness

New cancer cachexia treatment boosts weight gain and patient activity

Rensselaer researcher receives $3 million grant to explore gut health

Elam named as a Fellow of the Electrochemical Society

Study reveals gaps in access to long-term contraceptive supplies

Shining a light on the roots of plant “intelligence”

Scientists identify a unique combination of bacterial strains that could treat antibiotic-resistant gut infections

Pushing kidney-stone fragments reduces stones’ recurrence

Sweet success: genomic insights into the wax apple's flavor and fertility

New study charts how Earth’s global temperature has drastically changed over the past 485 million years, driven by carbon dioxide

Scientists say we have enough evidence to agree global action on microplastics

485 million-year temperature record of Earth reveals Phanerozoic climate variability

Atmospheric blocking slows ocean-driven glacier melt in Greenland

Study: Over nearly half a billion years, Earth’s global temperature has changed drastically, driven by carbon dioxide

[Press-News.org] Atomically controlled MXenes enable cost-effective green hydrogen production
KIST researchers develop atomically controlled MXenes as water electrolysis catalyst support. Molybdenum-based MXene electrocatalyst support reduces the cost of green hydrogen production