The ever-growing demand for advanced battery technologies with high energy and power density, high security, prolonged cycle life, and sustainably low cost requires the development of novel electrode materials for lithium-ion batteries (LIBs), as well as the alternative electrochemical energy storage technologies of sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) for their abundant alkali metal elements resources. Among various anode materials, such as graphite, organic compounds, metal oxides, and chalcogenides, iron sulfides have attracted substantial interests for their high theoretical capacity and low price. Specifically, as a common mineral that has been already applied as electrode for primary battery, ferrous disulfide (FeS2) has been regarded as one of the promising candidate anode materials and studied widely. Unfortunately, there are some inherent problems handicapping its practical application for alkali-ion batteries, including limited ionic/electrical conductivity, the formation of soluble polysulfides, and large volume change. In the last decade, massive efforts have been devoted to solving those problems. In this review, the various synthesis strategies, the effect of morphologies and particle sizes, the energy storage mechanisms, and the electrochemical performances of FeS2 as anode for alkali-ion batteries (LIBs, SIBs, and PIBs) are summarized. Furthermore, the existing challenges and prospects of the development of FeS2-based anode materials for alkali-ion batteries are presented at last. In this review, the various synthesis strategies, the effect of morphologies and particle sizes, the energy storage mechanisms, and the electrochemical performances of FeS2 as anode for alkali-ion batteries are summarized. Furthermore, the existing challenges and prospects of the development of FeS2-based anode materials are also presented.

中文翻译：

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FeS2作为金属离子电池负极的最新进展

对具有高能量和功率密度、高安全性、延长循环寿命和可持续低成本的先进电池技术的需求不断增长，需要开发用于锂离子电池（LIBs）的新型电极材料，以及替代电化学能源钠离子电池（SIBs）和钾离子电池（PIBs）具有丰富的碱金属元素资源。在石墨、有机化合物、金属氧化物和硫属化物等各种负极材料中，硫化铁以其高理论容量和低廉的价格引起了广泛的关注。具体而言，二硫化亚铁（FeS2）作为一种常见的已被用作一次电池电极的矿物，被认为是一种很有前途的候选负极材料，并得到了广泛的研究。不幸的是，存在一些限制其在碱离子电池中的实际应用的固有问题，包括有限的离子/电导率、可溶性多硫化物的形成和大的体积变化。在过去的十年中，已经付出了大量努力来解决这些问题。在这篇综述中，总结了各种合成策略、形态和粒径的影响、储能机制以及 FeS2 作为碱离子电池（LIBs、SIBs 和 PIBs）负极的电化学性能。此外，最后提出了发展FeS2基碱离子电池负极材料存在的挑战和前景。在这篇综述中，各种合成策略、形态和粒径的影响、储能机制、总结了 FeS2 作为碱离子电池负极的电化学性能。此外，还介绍了 FeS2 基负极材料发展的现有挑战和前景。