A nanorod FeP@phosphorus-doped carbon composite for high-performance lithium-ion batteries
By Lin, Cheng; Hu, Renzong; Liu, Jun; Yang, Lichun; Liu, Jiangwen; Ouyang, Liuzhang; Zhu, Min
Published in Journal of Alloys and Compounds
2018
Abstract
An iron phosphide (FeP) nanorods and phosphorus-doped carbon (P-C) composite (nanorod-FeP@P-C) has been successfully fabricated through a two-step strategy, that is, initial synthesis of Fe2P4O12@P-C precursor by polymerization and carbonization under argon atmosphere, followed by formation of FeP nanorods by reducing the Fe2P4O12 precursor with H2. The nanorod-FeP@P-C material shows high specific surface area (255.21 m2 g?1) and the pore size distribution covers a broad range centered at 10 nm, indicating mesoporosity. Due to the synergistic effect of the nanorod structure improving the kinetics of Li+ insertion/extraction and the phosphorus-doped carbon enhancing material conductivity and alleviating volume change of the active material during charge