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Synthesis of Hierarchical Porous $Ni_{1.5}Co_{1.5}S_{4}/g-C_{3}N_{4}$ Composite for Supercapacitor with Excellent Cycle Stability
| Content Provider | MDPI |
|---|---|
| Author | Jin, Fangzhou He, Xingxing Jiang, Jinlong Zhu, Weijun Dai, Jianfeng Yang, Hua |
| Copyright Year | 2020 |
| Description | In this work, the hierarchical porous Ni1.5Co1.5S4/g-C3N4 composite was prepared by growing Ni1.5Co1.5S4 nanoparticles on graphitic carbon nitride (g-C3N4) nanosheets via a hydrothermal route. Due to the self-assembly of larger size g-C3N4 nanosheets as a skeleton, the prepared nanocomposite possesses a unique hierarchical porous structure that can provide short ions diffusion and fast electron transport. As a result, the Ni1.5Co1.5S4/g-C3N4 composite exhibits a high specific capacitance of 1827 F g−1 at a current density of 1 A g−1, which is 1.53 times that of pure Ni1.5Co1.5S4 (1191 F g−1). In particular, the Ni1.5Co1.5S4/g-C3N4//activated carbon (AC) asymmetric supercapacitor delivers a high energy density of 49.0 Wh kg−1 at a power density of 799.0 W kg−1. Moreover, the assembled device shows outstanding cycle stability with 95.5% capacitance retention after 8000 cycles at a high current density of 10 A g−1. The attractive performance indicates that the easily synthesized and low-cost Ni1.5Co1.5S4/g-C3N4 composite would be a promising electrode material for supercapacitor application. |
| Starting Page | 1631 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano10091631 |
| Journal | Nanomaterials |
| Issue Number | 9 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-08-20 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Electrochemistry G-c3n4 Metal Sulfide Supercapacitor Cycle Stability |
| Content Type | Text |
| Resource Type | Article |
