A New Kind of Graphene



 There has been a ground breaking development in hydrogen barrier films. A team of scientists used graphene oxide (GO) and has made significant advancement in protective coatings for a multitude of applications. 

The team is from Kumamoto University. It is being led by Assistant Professor Kazuto Hatakeyama and Professor Shintaro Ida of the Institute of Industrial Nanomaterials. This interesting approach was published in the journal Small.

During the study, the team created a thin film from a new form of graphene. This new form does not contain any pores. Under normal circumstances, graphene oxide is known for its high ionic conductivity. This makes it difficult to use as an ion barrier. By removing the pores from the inside of graphene oxide, the team created a material with greatly improved hydrogen ion barrier properties.

Compared to conventional GO films, this new graphene is 100,000 times better of a hydrogen ion barrier. The team showed this by out-of-phase proton conductivity results, taken from AC impedance spectroscopy. The results were also confirmed when lithium foil (coated in the non-porous graphene) was protected from water drops. Lastly, the study confirmed that hydrogen ions move through the pores in regular GO. 

The work showed why it's important to remove these pores to enhance barriers. This research shows big advancements in protective coatings, rust prevention and even hydrogen infrastructure. 

Comments

Post a Comment

Popular posts from this blog

Mike Giradi from Stereotimes commentary on Holostage Room Treatments

I have been  friends with Mike Giradi for a few years and he has helped me test numerous designs .    I was so honored a few weeks ago when he agreed to give these Holostages a few words.  From. Mike G. The sound was a little closed in at first, but then it really opened up to prove it is another great audio product. The noise floor is greatly reduced. I am hearing details I've never heard before. When it's in the recording, the soundstage widens in all directions. The timbre of each instrument is spot on. The six Holostages installed in my room aided in the C13 alignment of air molecules to a far greater extent than the Bybee IQSE devices I had previously been using. Every instrument had greater depth, pop and presence. Listening to classical music on movie soundtracks is incredible now. The Holostages installed on my BACCH4MAC and monoblocks was the answer to what was needed. The noise floor dropped significantly in both cases resulting in greater clarity and music...
Read more

Queen Bee 🐝

Image
  Bees hide an interesting secret. When the hive loses its queen, who alone is able to give life to the colony and maintain order in a perfectly organized society, all seems lost. The life of the hive slows down. Without new eggs, the future is lost. In a few weeks, the colony may be doomed. But the bees do not panic. Nor do they expect salvation from outside. Demonstrating extraordinary collective intelligence and profound instincts, they trigger spectacular emergency procedures, almost unimaginable in a world dominated by insects. --- ◆ The transformation begins with a simple but essential choice The worker bees choose common larvae - those who would normally be mere workers. They are nothing special. They are not born different. But their fate changes completely. They are chosen to receive a special food: royal jelly. A rare substance, produced by healthy bees, rich in proteins, vitamins and bioactive compounds. This is royal food in the purest sense of the word. The larvae fed ...
Read more

Novel Acoustic Wave Discovered

Image
  A new diffraction phenomenon was researched and published on January 14, 2025. The team was led by Tohoku University with collaboration from the Japan atomic energy agency and the RIKEN Center for emergent matter science. Surface acoustic waves (SAWs) are elastic vibrations. They travel along the surface of materials, not unlike ripples on a pond. SAWs are an important part of frequency filters used in every day devices like our cell phones. These devices change electrical signals in vibrations, or ripples. This occurs because of the piezoelectric  effect and it enables efficient signal processing. During this experiment, the team created a periodic array of magnetic nanoscale materials. The magnetic array is a sort of specialized grating that the waves passed through. The scientists were surprised. Instead of the usual symmetric defraction, the team saw something different. They observed a completely new, asymmetrical diffraction of SAWs called ‘non-reciprocal defraction’....
Read more