Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Promising results obtained with a new electrocatalyst that reduces the need for platinum: Researchers from Aalto University have succeeded in manufacturing electrocatalysts used for storing electric energy with one-hundredth of the amount of platinum that is usually needed

TEM (tunneling electron microscope) image of a carbon nanotube decorated with platinum clusters (bright color).
CREDIT
Aalto University
TEM (tunneling electron microscope) image of a carbon nanotube decorated with platinum clusters (bright color). CREDIT Aalto University

Abstract:
Platinum is a very expensive metal and it is therefore one of the bottlenecks hindering the growth of renewable energy. Platinum is used as the catalyst in electrolysers that store electric energy as chemical compounds, and it also plays an important role in fuel cells, catalytic converters and many chemical processes used in industry.

Promising results obtained with a new electrocatalyst that reduces the need for platinum: Researchers from Aalto University have succeeded in manufacturing electrocatalysts used for storing electric energy with one-hundredth of the amount of platinum that is usually needed

Aalto, Finland | Posted on March 24th, 2017

A group of Aalto University researchers led by professors Tanja Kallio and Kari Laasonen has developed a manufacturing method for electrocatalysts that only uses one hundredth of the amount of platinum generally used in commercial products. The activity achieved using the new material is similar to that of commercial electrocatalysts. The method is based on the special characteristics of carbon nanotubes.

'When platinum is electrodeposited on the surface of carbon nanotubes, it forms particles consisting of a couple of atoms. On other materials, such as graphene, platinum forms larger nanoparticles', Tanja Kallio explains.

'We believe this is because the carbon atoms of the curved surface are in a strained state, which makes them prone to stabilising platinum on the surface of the nanotube. This ensures that the platinum atoms form small and catalytically active particles. Our modelling showed that the more strained the carbon bonds are, the better the stabilisation of the platinum. Smaller tubes are more curved, which makes the strain greater, so the diameter of the nanotubes is also important.'

One third of the price

Electrolysers store electrical energy in the form of hydrogen bond energy. In practice, this mechanism is used to store fluctuating energy, such as wind energy, and balance the difference between demand and production. Since the electrocatalyst forms approximately one third of the price of the electrolyser, reducing the amount of platinum needed would make the process significantly less expensive.

'In addition to the price of platinum, the availability of the metal is also a problem. Platinum is on the EU list of critical raw materials, which means that its use is problematic either due to its scarceness or due to geopolitical problems. This is why the EU is aiming to reduce the use of platinum', Kallio says and emphasises that so far the functionality of the electrocatalyst developed at Aalto University has only been proven in laboratory conditions.

'In small-scale conditions and at room temperature, the electrocatalyst is stable and usable for a long time. The next step is to increase the scale of production and test the functionality of the electrocatalyst in practical applications, which are often carried out at a higher temperature.'

####

For more information, please click here

Contacts:
Tanja Kallio

358-505-637-567

Professor Kari Laasonen (modelling)
tel. +358 40 557 0044

Copyright © Aalto University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

The research results have just been published in the scientific journal ACS Catalysis. Link to the article::

Related News Press

News and information

Switching with molecules: Molecular switch will facilitate the development of pioneering electro-optical devices May 25th, 2018

Tunable diamond string may hold key to quantum memory: A process similar to guitar tuning improves storage time of quantum memory May 24th, 2018

Remote control of transport through nanopores: New study outlines key factors affecting the transfer of molecules through biological channels May 24th, 2018

2018 Kavli Prizes in Astrophysics, Nanoscience, and Neuroscience to be Announced Live on May 31: Live announcement at the Norwegian Academy of Science and Letters to be streamed live at World Science Festival Event May 24th, 2018

Chemistry

Magnesium magnificent for plasmonic applications: Rice University, University of Cambridge synthesize and test nanoparticles of abundant material May 22nd, 2018

A micro-thermometer to record tiny temperature changes May 15th, 2018

Team achieves two-electron chemical reactions using light energy, gold May 15th, 2018

Watching nanomaterials form in 4D: Novel technology allows researchers to see dynamic reactions as they happen at the nanoscale April 26th, 2018

Possible Futures

Switching with molecules: Molecular switch will facilitate the development of pioneering electro-optical devices May 25th, 2018

Tunable diamond string may hold key to quantum memory: A process similar to guitar tuning improves storage time of quantum memory May 24th, 2018

Remote control of transport through nanopores: New study outlines key factors affecting the transfer of molecules through biological channels May 24th, 2018

'Spooky action at a distance': Researchers develop module for quantum repeater May 23rd, 2018

Discoveries

Switching with molecules: Molecular switch will facilitate the development of pioneering electro-optical devices May 25th, 2018

Tunable diamond string may hold key to quantum memory: A process similar to guitar tuning improves storage time of quantum memory May 24th, 2018

Remote control of transport through nanopores: New study outlines key factors affecting the transfer of molecules through biological channels May 24th, 2018

'Spooky action at a distance': Researchers develop module for quantum repeater May 23rd, 2018

Materials/Metamaterials

Making carbon nanotubes as usable as common plastics: Researchers discover that cresols disperse carbon nanotubes at unprecedentedly high concentrations May 15th, 2018

Mining for gold with a computer: Texas A&M team gleans new insights on key material May 3rd, 2018

'Exceptional' research points way toward quantum discoveries: Rice University scientists make tunable light-matter couplings in nanotube films April 30th, 2018

The first PE blown films with nanotubes hit the Chinese market April 26th, 2018

Announcements

Switching with molecules: Molecular switch will facilitate the development of pioneering electro-optical devices May 25th, 2018

Tunable diamond string may hold key to quantum memory: A process similar to guitar tuning improves storage time of quantum memory May 24th, 2018

Remote control of transport through nanopores: New study outlines key factors affecting the transfer of molecules through biological channels May 24th, 2018

2018 Kavli Prizes in Astrophysics, Nanoscience, and Neuroscience to be Announced Live on May 31: Live announcement at the Norwegian Academy of Science and Letters to be streamed live at World Science Festival Event May 24th, 2018

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Switching with molecules: Molecular switch will facilitate the development of pioneering electro-optical devices May 25th, 2018

Tunable diamond string may hold key to quantum memory: A process similar to guitar tuning improves storage time of quantum memory May 24th, 2018

Remote control of transport through nanopores: New study outlines key factors affecting the transfer of molecules through biological channels May 24th, 2018

'Spooky action at a distance': Researchers develop module for quantum repeater May 23rd, 2018

Automotive/Transportation

Harvesting clean hydrogen fuel through artificial photosynthesis May 3rd, 2018

Research gives new ray of hope for solar fuel April 27th, 2018

Arbe Robotics Selects GLOBALFOUNDRIES for its High-Resolution Imaging Radar to Enable Safety for Autonomous Cars: Arbe Robotics’ proprietary chipset leverages GF’s 22FDX® technology to deliver industry’s first real-time 4D imaging radar for level 4 and 5 autonomous driving April 26th, 2018

HTA to Present European Strategy for Competitive Micro- and Nanotechnologies & Smart Systems: Special Event in Brussels on April 24 Gathers Research Institutes’ CEOs, European Commissioners and Key European Industrials April 17th, 2018

Fuel Cells

Harvesting clean hydrogen fuel through artificial photosynthesis May 3rd, 2018

A new way to find better battery materials: Design principles could point to better electrolytes for next-generation lithium batteries March 29th, 2018

Rice sleuths find metal in 'metal-free' catalysts: Study of graphene catalysts finds trace of manganese, suggests better ultrathin fuel-cell components February 26th, 2018

Study boosts hope for cheaper fuel cells: Rice University researchers show how to optimize nanomaterials for fuel-cell cathodes January 6th, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project