Three-dimensional coral-like NiCoP@C@Ni(OH)2 core-shell nanoarrays as battery-type electrodes to enhance cycle stability and energy density for hybrid supercapacitors
By Quan Zong, H. Yang, Qianqian Wang, Qilong Zhang, Yulu Zhu, Huiying Wang, Qianhong Shen. Chemical Engineering Journal, 2019
210 citations recorded by the source corpus.
Abstract Transitional metal phosphides (TMPs) are regarded as comparatively promising electrode materials for energy storage and conversion. However, the poor cycling performance of TMPs remains to be a major challenge of their practical application for supercapacitor. In this work, coral-like NiCoP@C@Ni(OH)2 core-shell nanoarrays are vertically grown on nickel foams using two-step hydrothermal reaction, followed by carbonization and phosphorization treatment. The participation of amorphous carbon layer and ultrathin Ni(OH)2 nanosheets is expected to improve the performance of cycling stability and energy density. This NiCoP@C@Ni(OH)2 NAs exhibit high specific capacitance of 2300.8 F g−1 at a density of 1 A g−1, good rate capability (72.1% of capacitance at 20 A g−1) and long-term cycling stability (81.2% retention after 3000 cycles at 10 A g−1). Moreover, with the help of ultrathin Ni(OH)2 nanosheets, a hybrid supercapacitor assembled by the NiCoP@C@Ni(OH)2 NAs electrode against activated carbon achieves a high energy density (49.5 Wh kg−1 at a power density of 399.8 W kg−1). These results demonstrate that such NiCoP@C@Ni(OH)2 NAs hold great promise as novel battery-like electrode for hybrid supercapacitors in energy conversion.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/c39cae3e0c8f1efded73e469a8ebcc89ff800fc8
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Electrical and Electronic Engineering
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Tailoring nanostructured transition metal phosphides for high-performance hybrid supercapacitors (2021, background): “18a shows that the Ni(OH)2 nanosheets are directly gown on the NiCoP@C nanowires and nanoflakes uniformly [181].”