Lin Yicheng, Luo Shaohua, Cong Jun, Li Pengwei, Yuan Xueqian, Yan Shengxue
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, P. R. China.
School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, P. R. China.
Mater Horiz. 2024 May 7;11(9):2053-2076. doi: 10.1039/d3mh02118a.
Lithium-ion batteries (LIBs) have become the most popular portable secondary energy storage facilities. However, the limited lithium resource results in possible unsustainable development. Potassium-ion batteries (PIBs) are considered promising alternatives to LIBs because of their high resource availability, low cost, and environmentally friendly features. In this field, high energy density layered cathodes and carbon-based anodes are also the main research objectives. However, compared to the most appealing alternative sodium-ion batteries (SIBs), despite having various theoretical advantages, PIBs exhibit poorer electrochemical performance in practice. Their poor capacity retention and narrow working voltage range seriously limit their applications. The performance of the electrodes is usually considered an important factor for battery performance, life, and safety. To solve these problems, many significant research studies have been carried out in the last decade, achieving numerous breakthroughs. Nevertheless, there are still many drawbacks and unclear mechanisms. In this comprehensive review, we examine the current state of high-performance layered oxide cathodes, electrolytes, and carbon-based anodes, to identify potential candidates for PIBs. Our focus lies on their structural characteristics, interface properties, underlying mechanisms, and modification techniques. The viewpoints of these advanced strategies are integrated, and concise development suggestions and strategies are subsequently proposed.
锂离子电池（LIBs）已成为最受欢迎的便携式二次储能设施。然而，锂资源有限导致可能出现不可持续发展的情况。钾离子电池（PIBs）因其高资源可用性、低成本和环境友好特性，被认为是LIBs有前景的替代方案。在该领域，高能量密度的层状阴极和碳基阳极也是主要研究目标。然而，与最具吸引力的替代方案钠离子电池（SIBs）相比，尽管PIBs具有各种理论优势，但在实际应用中其电化学性能较差。它们较差的容量保持率和狭窄的工作电压范围严重限制了其应用。电极性能通常被认为是影响电池性能、寿命和安全性的重要因素。为了解决这些问题，在过去十年中开展了许多重要的研究，取得了众多突破。然而，仍然存在许多缺点和不明机制。在这篇综合综述中，我们研究了高性能层状氧化物阴极、电解质和碳基阳极的现状，以确定PIBs的潜在候选材料。我们关注它们的结构特征、界面性质、潜在机制和改性技术。整合这些先进策略的观点，随后提出简洁的发展建议和策略。
