A high-performance hybrid supercapacitor with NiO derived NiO@Ni-MOF composite electrodes
By Shanshan Xiong, Shuyao Jiang, Juan Wang, Hongjun Lin, M. Lin, Shuting Weng, Shuai Liu, Y. Jiao, Yanchao Xu, Jianrong Chen. 2020
197 citations recorded by the source corpus.
Abstract Metal-organic framework (MOF) is a class of porous material, which has been gradually applied in supercapacitor fields but remains a significant challenge owing to their intrinsic instability and poor conductivity. Herein, we design a new strategy for synthesizing a well-aligned porous NiO@Ni-MOF/NF cylindrical cage-shape structure derived from NiO self-sacrificed template and precursor. Particularly, this unique construction structure could not only boost the conductivity of the electrode, but also endow the Ni-MOF with a good orientation to promote the transport of electrons and ion in electrochemical energy storage process. The as-prepared NiO@Ni-MOF/NF delivers an amazing specific capacity (1853 C cm−2 at 1 mA cm−2) superior to NiO/NF (242 C cm−2), as well as a relatively low impedance. The hybrid supercapacitor (HSC) is composed of the NiO@Ni-MOF/NF and carbon nanotube (CNT) as the positive and negative electrode, respectively. This HSC exhibits a specific capacitance of 144 F g−1 at 1 A g−1. The maximum energy and power densities of this HSC device reach to 39.2 W h kg−1 and 7000 W kg−1, respectively, showing good cycling stability with 94% capacity retention over 3000 cycles. This work proposes an innovative strategy for rational preparation well-aligned MOF arrays, which could serve as a promising method in the asymmetric supercapacitor devices field.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/19adee10a441a69aa88e27b8cb2b151543c03f39
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Citations in the corpus
- A critical review on biochar-based engineered hierarchical porous carbon for capacitive charge storage (2021, methodology): “14 kraft lignin [23], and ant powder [87]) were greater than or comparable to those of SCs 372 assembled from other materials such as ZIF-derived graphene-based 2D Zn/Co oxide 373 hybrid [88], NiO derived NiO@Ni-MOF composite [89], heteroatoms-doped HPC 374”