Architected carbon lattices

As we move toward a world powered by renewable energy and electric mobility, the search for the next generation of energy storage materials has led scientists into the third dimension. The field of architected carbon materials is emerging as a transformative research line, moving beyond the traditional ways we manufacture batteries and supercapacitors to create structures that are both high-performing and mechanically robust.

The “Thickness” Dilemma

For decades, electrodes in devices like lithium-ion batteries have been made using a “slurry-casting” method—essentially painting a mixture of active materials onto a flat metal foil. While effective, this creates a major scientific bottleneck: the trade-off between energy and power. If you make the electrode thicker to store more energy, the ions have a harder time traveling through the dense, messy internal structure (a problem known as high tortuosity). This slows down the charging and discharging process and can even cause the material to crack and fail over time.

Researchers are now looking to Additive Manufacturing (3D printing) to solve this by building electrodes from the ground up with mathematically optimized geometries. By replacing random mixtures with precise architectures like gyroids or octet-truss lattices, scientists can create “highways” for ion transport, allowing for much thicker electrodes that don’t sacrifice speed or durability.

Digital Light Processing and graphitization

A particularly exciting branch of this research involves Digital Light Processing (DLP). Unlike common 3D printing that melts plastic, DLP uses UV light to cure specialized resins into incredibly fine details, down to 25–50 micrometers. However, the real “magic” happens after the printing is finished.

The printed polymer structure is subjected to pyrolysis—a high-temperature treatment in an oxygen-free environment—that breathes life into the material by converting it into pure, functional carbon. This process allows scientists to create complex, self-supporting carbon scaffolds that maintain their intricate 3D shape while gaining the electrical conductivity needed for energy applications.

One of the most significant frontiers in this research line is catalytic graphitization. Traditionally, producing high-quality graphitic carbon requires extreme temperatures exceeding 3000°C, which is incredibly energy-intensive. Modern research is exploring how to use transition metal catalysts (like iron or nickel) to trigger this transformation at much lower temperatures—around 1000°C. This “low-temperature” approach is a game-changer for the scientific community, as it aims to produce carbon that is at least 10 times more conductive than standard 3D-printed carbons while drastically reducing the carbon footprint of the manufacturing process itself.

A New Era of Multifunctional Materials

The scientific interest in architected carbons extends far beyond just “better batteries.” Because these 3D structures are engineered to be lightweight and strong, they open the door to multifunctional materials. Imagine a drone where the wings aren’t just holding a battery—they are the battery. These “structural batteries” combine electrochemical energy storage with load-bearing capabilities, which could revolutionize industries from aerospace to consumer electronics.

Furthermore, the ability to control hierarchical porosity—designing pores that range in size from one millimeter down to 10 nanometers—allows these materials to be tailored for diverse uses, including CO2 capture, water filtration, and advanced electrocatalysis.

The shift toward architected carbon represents a fundamental change in how we think about material design. By merging nanoengineering, carbon chemistry, and advanced manufacturing, we are not just trying to improve existing devicesbut establishing a new foundation for lightweight, sustainable, and highly efficient technologies. As this technology matures, it promises to address some of the most pressing environmental and energy challenges of our time.