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Novel Nanomaterial Promises Improvements in Batteries and Many More Sustainable Applications - Unique nanomesh combines high porosity, unprecedented surface-to-volume ratio and ease of manufacturing - KULeuven.be / EnergyVille.be / imec-int.com
Novel Nanomaterial Promises Improvements in Batteries and Many More Sustainable Applications

 

NewswireToday - /newswire/ - Leuven, Belgium, 2019/03/12 - Unique nanomesh combines high porosity, unprecedented surface-to-volume ratio and ease of manufacturing - KULeuven.be / EnergyVille.be / imec-int.com.

   
 
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Today, imec, a world-leading research and innovation hub in nanoelectronics, energy, and digital technologies and KU Leuven, both partners in EnergyVille, present a novel nanomesh material that could mean a breakthrough in a variety of sustainable-application sectors. The new nanomesh material is a three-dimensional nanometer-scale (metal) grid structure with highly regular internal dimensions. Thanks to a combination of its unique material properties and the ease of manufacturing, it holds the promise to become widely applicable in (sustainable) industrial applications. Think about more efficient batteries, better catalytic convertors, fuel cells and hydrogen production.

The nanomesh material is a 3D structure of nanowires that are horizontally interconnected on multiple levels, showing highly regular internal spacings and dimensions. As a result, it combines high porosity with an unprecedented surface-to-volume ratio. For each micrometer thickness, there is a 26-fold increase of available surface area. To visualize this: when filling a volume of a small can of soda, it would remain 75% empty while containing a surface area equal to the size of a football field. On top of that, the internal and external dimensions can be tuned to almost any specification, making it potentially compatible with a multitude of application requirements.

Many industrial processes build on chemical reactions that (need to) occur at a surface. The more surface available, the more reactions that can occur simultaneously, and the higher the speed or throughput of the process. Think about electrodes in batteries, for example, transforming lithium into lithium ions. Imec’s nanomesh material can enable high-capacity and fast-charging batteries, because its large surface combined with high porosity features a high load of energy-storing material while it remains as a nanometer thin-film in close contact with the current collector. Also, in fuel cells, the metal nano-grid structure of imec’s new nanomesh material could simultaneously act as a current collector and a functional catalyst. For example, in the electrolytic production of hydrogen from water, a few-micron of the new nanomesh material was shown to outperform a 300 times thicker nickel foam of about one millimeter thick.

As a bonus, this unique material can be quite easily manufactured through cheap anodization and electroplating processes. First, a mold is formed by anodization of aluminum foil. The secret for the regular perforation at the nanoscale lays in the controlled doping of the aluminum metal. The resulting structure acts as a mold in which a large variety of materials can be deposited. After consecutive chemical etching, the mold is being dissolved and a self-standing nanomesh structure remains. On a macroscopic level, the self-standing nanomesh is a flexible foil, giving it another edge over its closest competitors (metal foams and aerogels), which are often more rigid or brittle.

Prof. Philippe Vereecken, scientific director at imec and professor at the bio-engineering faculty of KU Leuven: “We have high expectations for this new nanomaterial. Its greatest strengths lie in the regularity of its structure, the large open structure and the conformability of its dimensions. We discovered the three-dimensional nanoporous structure almost 10 years ago, but only during the PhD research of Stanislaw Zankowski, the uniqueness of this material became clear. The spaces between the nanowires were small when using the traditional templated nanowire processes. Stan optimized the fabrication process to obtain the large porosity, so that it can now be optimally leveraged in many applications. We welcome all industrial parties who want to join us in transferring this very promising material into industrial applications.”

About imec

Imec (imec-int.com) is a world-leading research and innovation hub in nanoelectronics, energy and digital technologies. The combination of our widely acclaimed leadership in microchip technology and profound software and ICT expertise is what makes us unique. By leveraging our world-class infrastructure and local and global ecosystem of partners across a multitude of industries, we create groundbreaking innovation in application domains such as healthcare, smart cities and mobility, logistics and manufacturing, energy and education.

As a trusted partner for companies, start-ups and universities we bring together more than 4,000 brilliant minds from over 85 nationalities. Imec is headquartered in Leuven, Belgium and has distributed R&D groups at a number of Flemish universities, in the Netherlands, Taiwan, USA, China, and offices in India and Japan. In 2017, imec's revenue (P&L) totaled 546 million euro.

Imec is a registered trademark for the activities of IMEC International (a legal entity set up under Belgian law as a "stichting van openbaar nut”), imec Belgium (IMEC vzw supported by the Flemish Government), imec the Netherlands (Stichting IMEC Nederland, part of Holst Centre which is supported by the Dutch Government), imec Taiwan (IMEC Taiwan Co.) and imec China (IMEC Microelectronics (Shanghai) Co. Ltd) and imec India (Imec India Private Limited), imec Florida (IMEC USA nanoelectronics design center).

About KU Leuven
KU Leuven (kuleuven.be) is Europe’s most innovative university. Located in Belgium, it is dedicated to research, education, and service to society. KU Leuven is a founding member of the League of European Research Universities (LERU) and has a strong European and international orientation. Our scientists conduct basic and applied research in a comprehensive range of disciplines. University Hospitals Leuven, our network of research hospitals, provides high-quality healthcare and develops new therapeutic and diagnostic insights with an emphasis on translational research. The university welcomes more than 50,000 students from over 140 countries. The KU Leuven Doctoral Schools train approximately 4,500 PhD students.

About EnergyVille
EnergyVille (energyville.be) is a collaboration between the Flemish research partners KU Leuven, VITO, imec and UHasselt in the field of sustainable energy and intelligent energy systems. Our researchers provide expertise to industry and public authorities on energy-efficient buildings and intelligent networks for a sustainable urban environment. This includes, for example, smart grids and advanced district heating and cooling.

One of the objectives of EnergyVille is to become one of the top five European institutes in innovative energy research. In this context, the center was embedded in major national and international networks right from the start. It covers research, development, training and innovative industrial activities under one name and in close collaboration with local, regional and international partners.

EnergyVille aims to be a driver in the Thor science park in Genk in the areas of research, business development and employment creation. The research center is supported by the city of Genk, the Flemish Government, the Province of Limburg, LRM, Nuhma, POM Limburg and the European structural funds.

 
 
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Novel Nanomaterial Promises Improvements in Batteries and Many More Sustainable Applications

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