Microcrystalline-Fe2P4O12 as eco-friendly and efficient anode for high-performance dual-ion battery

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2024-11, Vol.499, p.156516, Article 156516
• Main Authors: He, Yunbing, Pan, Xuexue, Long, Qingping, Yang, Hao, Huang, Hongkun, Zhan, Haoxu, He, Yiran, Supiyeva, Zhazira, Li, Chao, Abbas, Qamar
• Format: Article
• Language: English
• Subjects: Anode; Dual-ion batteries; Fe2P4O12; Graphite cathode; SEI
• ISSN: 1385-8947
• DOI: 10.1016/j.cej.2024.156516

[Display omitted] •Fe2P4O12 is produced by a simple method at mild temperatures.•Fe2P4O12 generates a high specific capacity of 215mAh/g.•Fe2P4O12 exhibits excellent ion diffusion kinetics and reduced interface impedance.•Fe2P4O12 stores Li+ through the valence state changes of Fe2+/Fe3. Dual-ion batteries (DIBs) have garnered significant interest because of their cost-effectiveness and high level of safety. However, the anode typically utilized tends to show low cyclic stability in complete batteries when the only sources of lithium are primarily consumed in the electrolyte following the development of a solid electrolyte interphase (SEI) during the initial electrochemical process. Here, a simple approach is used to produce microcrystalline carbon-coated Fe2P4O12 at a mild temperature. This material has the ability to store lithium ions, resulting in a specific capacity of 215 mAh/g at a potential range of 1 to 2.5 V vs Li+/Li0. Furthermore, it demonstrates a remarkable coulombic efficiency of 99 % in the initial cycles, even in the absence of a solid electrolyte interphase (SEI) formation. The issue of the high voltage plateau of the graphite cathode is addressed by selecting a total of 4.2 V as the optimal voltage range in DIBs. Simultaneously, the composite Fe2P4O12 also demonstrates exceptional ion diffusion kinetics and reduced interfacial impedance due to its microcrystalline structure. The utilization of the proposed Fe2P4O12 anode addresses a crucial deficiency in the complete range of deep in-situ bioremediation techniques, hence expediting the industrialization process.