Superstructured NiMoO4@CoMoO4 core-shell nanofibers for supercapacitors with ultrahigh areal capacitance
Document Type
Article
Publication Date
3-13-2023
Department
Department of Materials Science and Engineering
Abstract
High areal capacitance for a practical supercapacitor electrode requires both large mass loading and high utilization efficiency of electroactive materials, which presents a great challenge. Herein, we demonstrated the unprecedented synthesis of superstructured NiMoO4@CoMoO4 core-shell nanofiber arrays (NFAs) on a Mo-transition-layer-modified nickel foam (NF) current collector as a new material, achieving the synergistic combination of highly conductive CoMoO4 and electrochemical active NiMoO4. Moreover, this superstructured material exhibited a large gravimetric capacitance of 1,282.2 F/g in 2 M KOH with a mass loading of 7.8 mg/cm2, leading to an ultrahigh areal capacitance of 10.0 F/cm2 that is larger than any reported values of CoMoO4 and NiMoO4 electrodes. This work provides a strategic insight for rational design of electrodes with high areal capacitances for supercapacitors.
Publication Title
Proceedings of the National Academy of Sciences of the United States of America
Recommended Citation
Chang, L.,
Chen, S.,
Fei, Y.,
Stacchiola, D.,
&
Hu, Y.
(2023).
Superstructured NiMoO4@CoMoO4 core-shell nanofibers for supercapacitors with ultrahigh areal capacitance.
Proceedings of the National Academy of Sciences of the United States of America,
120(12).
http://doi.org/10.1073/pnas.2219950120
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/16984