Scalable Dry Production Process of a Superior 3D Net‐Like Carbon‐Based Iron Oxide Anode Material for Lithium‐Ion Batteries

Carbon‐based transition‐metal oxides are considered as an appropriate anode material candidate for lithium‐ion batteries. Herein, a simple and scalable dry production process is developed to produce carbon‐encapsulated 3D net‐like FeOx/C materials. The process is simply associated with the pyrolysis of a solid carbon source, such as filter paper, adsorbed with ferrite nitrate. The carbon derived from filter paper induces a carbothermal reduction to form metallic Fe, the addition of carbon and iron increase the conductivity of this material. As expected, this 3D net‐like FeOx/C composite delivers an excellent charge capacity of 851.3 mAh g−1 after 50 cycles at 0.2 A g−1 as well as high stability and rate performance of 714.7 mAh g−1 after 300 cycles at 1 A g−1. Superior performance, harmlessness, low costs, and high yield may greatly stimulate the practical application of the products as anode materials in lithium‐ion batteries. Electrode materials: A simple, scalable and dry production process was developed to produce three‐dimensional net‐like FeOx/C materials. The obtained product has a superior three‐dimensional structure, which plays an important role for the current collector and is responsible for the excellent electrochemical performance of lithium‐ion batteries.