This tantalum foil is developed for advanced research applications in energy materials and experimental setups, particularly as a current collector in battery systems. With a purity of 99.95%, it offers excellent corrosion resistance and thermal stability, making it suitable for demanding electrochemical environments. The foil measures 0.02 mm in thickness with 100×100 mm dimensions, providing a thin yet robust substrate for electrode fabrication or high-temperature experiments. Its high melting point and inertness in many electrolytes support reliable performance in lithium-ion or solid-state battery studies. This material is also relevant for fundamental material science investigations requiring a dense, non-reactive metal layer. The specified dimensions allow for easy integration into standard laboratory testing configurations.