Cu2Se-based thermoelectric cellular architectures for efficient and durable power generation

Abstract Thermoelectric power generation offers a promising way to recover waste heat. The geometrical design of thermoelectric legs in modules is important ensure sustainable but cannot be easily achieved by traditional fabrication processes. Herein, we propose the cellular architectures for efficient and durable generation, realized extrusion-based 3D printing process Cu 2 Se materials. We optimum aspect ratio cuboid leg maximize output extend this mechanically stiff hollow hexagonal column- honeycomb-based legs. Moreover, develop organic binder-free Se-based 3D-printing inks with desirable viscoelasticity, tailored an additive inorganic 8 2? polyanion, fabricating designed topologies. computational simulation experimental measurement demonstrate superior mechanical stiffness proposed other designs, unveiling importance topological designs toward higher longer durability.