Crystalization Expert (F​/M​/D

We are seeking a skilled and innovative crystallization expert to join our dynamic team focused on developing next generation of lithium-sulfur battery technology. The ideal candidate will have a deep understanding of solvent-based crystallization processes. This role focuses on developing high-quality 3-dimensional monolithic sulfur-based wafers for use in our lithium-sulfur batteries. As an integral part of the team, you will play a critical role in the research, design, development and implementation of theion’s polycrystalline sulfur wafer technology and contribute towards the improvement, scalability and commercialization of the same.

• Design and execute experiments to grow 3-dimensional polycrystalline sulfur wafers using solution-based crystallization.
• Optimize crystallization process to maintain a high degree of control over porosity, uniformity and thickness of the grown sulfur wafer.
• Investigate growth mechanisms and establish robust protocols for consistent and scalable wafer production.
• Design and implement nanomaterial seeding strategies to modulate and control crystal growth sulfur.
• Evaluate the impact of different seed introductions on the wafer quality, structural integrity, and crystallographic properties.
• Contribute towards the design and implementation of wafer growing reactor.
• Collaborate with material scientists to select and tailor nanomaterials for optimal seed-induced growth modulation.
• Perform comprehensive material characterization using techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and spectroscopy methods.
• Analyze growth kinetics and crystal morphology, drawing correlations between process parameters and seeding material properties.
• Maintain record of experimental data and prepare detailed technical reports and publications.
• Work cross-functionally with scientists, engineers, and external partners to advance sulfur wafer growth technologies.

• PhD in Materials Sciences, Physics, Chemical Engineering, Process Engineering or a related field with a focus on crystal growth.
• Demonstrated expertise in solution-based crystal growth, wafer crystallization, and related techniques.
• Proficiency in advanced material characterization methods.
• Excellent written and verbal communication skills, with a proven track record of scientific publications or patents.
• Fluent in speaking English – our company language is English, incl. all the internal communication and meetings.

• Hands-on experience in nanomaterial handling.
• Strong problem-solving and analytical skills, with the ability to innovate and think critically.
• Ability to work both independently and collaboratively in a fast-paced environment.

Headquartered in Berlin, Germany, theion GmbH is a pioneering high-tech start-up revolutionizing the mobile battery market. We specialize in the development and production of Crystal Batteries, addressing the world's most significant energy storage challenges across various sectors, from aerospace to consumer electronics. Our innovative approach utilizing sulfur in its crystal form promises to triple energy density while significantly reducing costs and environmental impact.