Hierarchically Superstructured Prussian Blue Analogues: Spontaneous Assembly Synthesis and Applications as Pseudocapacitive Materials

• Published in: ChemSusChem 2015-01, Vol.8 (1), p.177-183
• Main Authors: Yue, Yanfeng, Zhang, Zhiyong, Binder, Andrew J., Chen, Jihua, Jin, Xianbo, Overbury, Steven H., Dai, Sheng
• Format: Article
• Language: English
• Subjects: Chemistry Techniques, Synthetic; Electric Capacitance; Electrochemistry; Ferrocyanides - chemical synthesis; Ferrocyanides - chemistry; hierarchical superstructures; Models, Molecular; Molecular Conformation; Porosity; prussian blue; prussian blue analogues; pseudocapacitive materials; spontaneous assembly
• ISSN: 1864-5631; 1864-564X
• DOI: 10.1002/cssc.201402520

Hierarchically superstructured Prussian blue analogues (hexacyanoferrate, M=NiII, CoII and CuII) are synthesized through a spontaneous assembly technique. In sharp contrast to macroporous‐only Prussian blue analogues, the hierarchically superstructured porous Prussian blue materials are demonstrated to possess a high capacitance, which is similar to those of the conventional hybrid graphene/MnO2 nanostructured textiles. Because sodium or potassium ions are involved in energy storage processes, more environmentally neutral electrolytes can be utilized, making the superstructured porous Prussian blue analogues a great contender for applications as high‐performance pseudocapacitors. Analogue is back! Hierarchically superstructured Prussian blue analogues were fabricated through a spontaneous assembly technique. These Prussian blue analogues, showing capacitance comparable with conventional hybrid graphene/MnO2 nanostructured textiles, possess the advantage that they can be used with more environmentally neutral electrolytes, making Prussian blue analogues a great contender for applications as pseudocapacitive materials.