普鲁士蓝
阴极
水溶液
离子
材料科学
离子交换
电极
化学工程
扩散
化学
无机化学
纳米技术
电化学
有机化学
热力学
物理
工程类
物理化学
作者
Yinxiang Zeng,Xue Feng Lu,Song Lin Zhang,Deyan Luan,Sheng Li,Xiong Wen Lou
标识
DOI:10.1002/anie.202107697
摘要
Prussian blue analogs (PBAs) are considered as reliable and promising cathode materials for aqueous Zn-ion batteries (AZIBs), but they suffer from low capacity and poor cycling stability due to insufficient active sites and structural damage caused by the ion insertion/extraction processes. Herein, a template-engaged ion exchange approach has been developed for the synthesis of Co-substituted Mn-rich PBA hollow spheres (CoMn-PBA HSs) as cathode materials for AZIBs. Benefiting from the multiple advantageous features including hollow structure, abundant active sites, fast Zn2+ ion diffusion, and partial Co substitution, the CoMn-PBA HSs electrode shows efficient zinc ion storage properties in terms of high capacity, decent rate capability and prolonged cycle life.
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