Internship | Development of hard carbons for Na-ion batteries

The contribution of renewable energy sources to the total energy generation is steadily rising. One of the issues of renewable energy sources, such as solar and wind, is intermittency and therefore electricity price variation. At TNO, we work on several aspects of the energy transition from energy generation to storage. The project described here is concerned with energy storage for next-generation beyond-Li batteries, specifically Na-ion batteries. Na-ion batteries have been gaining attention, with recent examples of battery cells developed by several companies. However, there is still a lot of research to do if we want to keep pace with demands for energy density, power density, durability, safety, and sustainability. Within this project, the aim is to create hard carbon anodes with high durability.

In this internship, you will synthesize hard carbon and evaluate its electrochemical performance in Na-ion battery cells. You will relate the electrochemical properties of the material to the synthesis protocol, materials properties, and electrode preparation methods.

As for the experimental part, you will first develop a synthesis method for hard carbon materials. Afterwards, you will prepare the full electrodes and test the battery performance in coin cells under industrially relevant conditions. Under guidance of TNO, you will propose solutions to optimize the electrodes and their production process.
You will learn characterization and analytical techniques such as Scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), X-Ray diffraction analysis (XRD), as well as electrochemical techniques such as cyclic voltammetry (CV) and battery testing
Minimum project duration is 6 months, starting as soon as possible. A more detailed plan will be drafted together with your academic supervisor. At TNO, you will work in Holst Center and in the Materials Solutions Department in Eindhoven.

• Practical experience in lab environment and hands-on skills are preferable, particularly with chemical synthesis and/or electrochemistry.
• Interest in the energy transition.
• High motivation, with a curious nature and a taste for problem-solving.
• Good communication skills (in English).
• The duration of this internship is at least 6 months.

You want to work on the precursor of your career; a work placement gives you an opportunity to take a good look at your prospective future employer. TNO goes a step further. It’s not just looking that interests us; you and your knowledge are essential to our innovation. That’s why we attach a great deal of value to your personal and professional development. You will, of course, be properly supervised during your work placement and be given the scope for you to get the best out of yourself. Naturally, we provide suitable work placement compensation.

At TNO, we innovate for a healthier, safer and more sustainable life. And for a strong economy. Since 1932, we have been making knowledge and technology available for the common good. We find each other in wonder and ingenuity. We are driven to push boundaries. There is all the space and support for your talent and ambition. You work with people who will challenge you: who inspire you and want to learn from you. Our state-of-the-art facilities are there to realize your vision. What you do at TNO matters: impact makes the difference. Because with every innovation you contribute to tomorrow’s world. Read more about TNO as an employer.

At TNO we encourage an inclusive work environment, where you can be yourself. Whatever your story and whatever unique qualities you bring to the table. It is by combining our unique strengths and perspectives that we are able to develop innovations that make a real difference in society. Want to know more? Read what steps we are taking in the area of diversity and inclusion.

After the first CV selection, the application process will be conducted by the concerning department. TNO will provide a suitable internship agreement. If you have any questions about this vacancy, you can contact the contact person mentioned below.

Students must reside in the Netherlands before the start and also throughout the internship or graduation project at TNO.