Superstructured NiMoO<sub>4</sub>@CoMoO<sub>4</sub> core-shell nanofibers for supercapacitors with ultrahigh areal capacitance.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36913567.
- Also identified by DOI 10.1073/pnas.2219950120 and PMC identifier 10041093.
- Licence recorded as CC BY-NC-ND.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
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 NiMoO<sub>4</sub>@CoMoO<sub>4</sub> 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 CoMoO<sub>4</sub> and electrochemical active NiMoO<sub>4</sub>. 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/cm<sup>2</sup>, leading to an ultrahigh areal capacitance of 10.0 F/cm<sup>2</sup> that is larger than any reported values of CoMoO<sub>4</sub> and NiMoO<sub>4</sub> electrodes. This work provides a strategic insight for rational design of electrodes with high areal capacitances for supercapacitors.