Navigation Links
Novel nano-structures to realize hydrogen's energy potential
Date:8/15/2012

For the first time, engineers at the University of New South Wales have demonstrated that hydrogen can be released and reabsorbed from a promising storage material, overcoming a major hurdle to its use as an alternative fuel source.

Researchers from the Materials Energy Research Laboratory in nanoscale (MERLin) at UNSW have synthesised nanoparticles of a commonly overlooked chemical compound called sodium borohydride (NaBH4) and encased these inside nickel shells. Their unique nanostructure has demonstrated remarkable hydrogen storage properties.

"No one has ever tried to synthesise these particles at the nanoscale because they thought it was too difficult, and couldn't be done. We're the first to do so, and demonstrate that energy in the form of hydrogen can be stored with sodium borohydride at practical temperatures and pressures," says Dr Kondo-Francois Aguey-Zinsou from the School of Chemical Engineering at UNSW.

Considered a major a fuel of the future, able to bridge the gap between renewables and fossil fuels, hydrogen could be used to power buildings, portable electronics and vehicles but this application hinges on practical storage technology.

Lightweight compounds known as borohydrides (including lithium and sodium compounds) are known to be effective storage materials but it was believed that once the energy was released it could not be reabsorbed a critical limitation. This perceived "irreversibility" means there has been little focus on sodium borohydride.

However, the UNSW result published in the journal ACS Nano, demonstrates for the first time that reversibility is indeed possible using a borohydride material by itself and could herald significant advances in the design of novel hydrogen storage materials.

"By controlling the size and architecture of these structures we can tune their properties and make them reversible this means they can release and reabsorb hydrogen," says Aguey-Zinsou, lead author on the paper. "We now have a way to tap into all these borohydride materials, which are particularly exciting for application on vehicles because of their high hydrogen storage capacity."

The researchers observed remarkable improvements in the thermodynamic and kinetic properties of their material. This means the chemical reactions needed to absorb and release hydrogen occurred faster than previously studied materials, and at significantly reduced temperatures making possible applications far more practical.

In its bulk form, sodium borohydride requires temperatures above 550 degrees Celsius just to release hydrogen. Even on the nano-scale the improvements are minimal.However, with their core-shell nanostructure, the researchers saw initial energy release happening at just 50 C, and significant release at 350 C.

"The new materials that could be generated by this exciting strategy could provide practical solutions to meet many of the energy targets set by the US Department of Energy," says Aguey-Zinsou. "The key thing here is that we've opened the doorway."


'/>"/>

Contact: Myles Gough
myles.gough@unsw.edu.au
61-029-385-1933
University of New South Wales
Source:Eurekalert

Related biology news :

1. Cleveland Clinic researchers receive $5 million grant to discover novel pathways to heart disease
2. VTT and GE Healthcare developing novel biomarkers to predict Alzheimers disease
3. Mexican rock heroes trial novel green trading system
4. London researchers discover novel mechanism involved in key immune response
5. Novel discovery by NUS scientists paves the way for more effective treatment of cancers
6. Key proteins newly discovered form and function may provide novel cancer treatment target
7. Unique adaptations to a symbiotic lifestyle reveal novel targets for aphid insecticides
8. Notre Dame researchers using novel method to combat malaria drug resistance
9. New clinical trial explores novel noninvasive colon cancer screening test
10. Researchers discover novel therapy for Crohns disease
11. A new energy source: Major advance made in generating electricity from wastewater
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/15/2017)... , Aug. 15 2017   ivWatch LLC , a ... intravenous (IV) therapy, today announced receipt of its ISO 13485 Certification, ... by the International Organization for Standardization (ISO®). ... ivWatch Model 400 Continuous Monitoring device for the early ... "This is an ...
(Date:5/23/2017)... the first robotic gym for the rehabilitation and functional motor sense evaluation ... Genoa, Italy . The first 30 robots will be available from ... . The technology was developed and patented at the IIT laboratories ... Technology thanks to a 10 million euro investment from entrepreneur Sergio Dompè. ... ...
(Date:4/19/2017)... April 19, 2017 The global ... landscape is marked by the presence of several large ... held by five major players - 3M Cogent, NEC ... accounted for nearly 61% of the global military biometric ... in the global military biometrics market boast global presence, ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... , ... October 10, 2017 , ... ... and business process optimization firm for the life sciences and healthcare industries, announces ... conference in San Francisco. , The presentation, “Automating GxP Validation for Agile Cloud ...
(Date:10/9/2017)... Oct. 9, 2017  BioTech Holdings announced today ... which its ProCell stem cell therapy prevents limb ... The Company, demonstrated that treatment with ProCell resulted ... saved as compared to standard bone marrow stem ... resulted in reduction of therapeutic effect.  ...
(Date:10/9/2017)... ... October 09, 2017 , ... At its national board meeting ... a professor in Harvard University’s Departments of Physics and Astronomy, has been selected for ... of the winning team for the 2015 Breakthrough Prize in Fundamental physics for the ...
(Date:10/9/2017)... (PRWEB) , ... October 09, ... ... published on October 5, 2017, in the medical journal, Epilepsia, Brain Sentinel’s ... the gold standard, video EEG, in detecting generalized tonic-clonic seizures (GTCS) using ...
Breaking Biology Technology: