FeP/C Composites as an Anode Material for K-Ion Batteries
ACS Applied Materials & Interfaces2019Vol. 11(25), pp. 22364–22370
Citations Over TimeTop 10% of 2019 papers
Wenting Li, Baijun Yan, Hongwei Fan, Chao Zhang, Hanying Xu, Xiaolu Cheng, Zelin Li, Guixiao Jia, Shengli An, Xinping Qiu
Abstract
Owing to their natural abundance, the low potential, and the low cost of potassium, potassium-ion batteries are regarded as one of the alternatives to lithium-ion batteries. In this work, we successfully fabricated a FeP/C composite, a novel electrode material for PIBs, through a simple and productive high-energy ball-milling method. The electrode delivers a reversible capacity of 288.9 mA·h·g-1 (2nd) at a discharge rate of 50 mA g-1, which can meet the future energy storage requirements. Density functional theory calculations suggest a lower diffusion barrier energy of K+ than Na+, which allows faster K+ diffusion in FeP.
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