Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 31(3), p. 15792-15823, 2015
DOI: 10.1039/c5ta02743h
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Currently, supercapacitors (SCs) are considered as one kind of the most promising energy storage devices, which mainly relies on their unique properties, such like high output power, long cycling stability, fast charge/discharge capability and so on. Nevertheless, the unsatisfied energy density of SCs still limits their wild promotion in practical applications. Given this, designing three dimensional (3D) architectures for SCs electrodes is perceived as an efficient strategy, since the well-constructed 3D structures could enable reduced “dead surface”, good electron transport kinetics, hierarchical porous channels and short ionic diffusion distances. This review aims to describe the current progress of different synthetic processes for the preparation of 3D SCs electrodes, dividing into template-assisted strategy and non-template strategy. We summarize recently proposed methods, novel structures, electrochemical performances for these 3D electrodes. Advantages and disadvantages accompanying them were also analyzed. Lastly, we further discussed the challenges and prospects of the fabrication of 3D SCs electrodes.