Beitia Julen, Ahedo Isabel, Paredes Juan Ignacio, Goikolea Eider, Ruiz de Larramendi Idoia
Departamento de Química Orgánica e Inorgánica, Universidad del País Vasco (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain.
Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, C/Francisco Pintado Fe 26, 33011 Oviedo, Spain.
Nanomaterials (Basel). 2024 Jun 25;14(13):1092. doi: 10.3390/nano14131092.
Aqueous zinc-ion batteries (AZiBs) have emerged as a promising alternative to lithium-ion batteries as energy storage systems from renewable sources. Manganese hexacyanoferrate (MnHCF) is a Prussian Blue analogue that exhibits the ability to insert divalent ions such as Zn. However, in an aqueous environment, MnHCF presents weak structural stability and suffers from manganese dissolution. In this work, zinc doping is explored as a strategy to provide the structure with higher stability. Thus, through a simple and easy-to-implement approach, it has been possible to improve the stability and capacity retention of the cathode, although at the expense of reducing the specific capacity of the system. By correctly balancing the amount of zinc introduced into the MnHCF it is possible to reach a compromise in which the loss of capacity is not critical, while better cycling stability is obtained.
水系锌离子电池（AZiBs）已成为一种颇具前景的锂离子电池替代品，可作为可再生能源的储能系统。六氰合铁酸锰（MnHCF）是一种普鲁士蓝类似物，具有插入二价离子（如锌离子）的能力。然而，在水性环境中，MnHCF的结构稳定性较弱，且存在锰溶解的问题。在这项工作中，探索了锌掺杂作为一种为结构提供更高稳定性的策略。因此，通过一种简单且易于实施的方法，尽管以降低系统的比容量为代价，但已能够提高阴极的稳定性和容量保持率。通过正确平衡引入到MnHCF中的锌量，可以达成一种折衷方案，即容量损失并不严重，同时可获得更好的循环稳定性。
