Novel Supercapacitor Electrode Derived from One Dimensional Cerium Hydrogen Phosphate (1D-Ce(HPO<sub>4</sub>)<sub>2</sub>.xH<sub>2</sub>O)
oleh: Jong Hee Yoon, Bak Jinsoo, Inho Cho, Rajangam Vinodh, Bruno G. Pollet, Rajendran Suresh Babu, Hee-Je Kim, Sungshin Kim
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2022-11-01 |
Deskripsi
In this manuscript, we are reporting for the first time one dimensional (1D) cerium hydrogen phosphate (Ce(HPO<sub>4</sub>)<sub>2</sub>.xH<sub>2</sub>O) electrode material for supercapacitor application. In short, a simple hydrothermal technique was employed to prepare Ce(HPO<sub>4</sub>)<sub>2</sub>.xH<sub>2</sub>O. The maximum surface area of 82 m<sup>2</sup> g<sup>−1</sup> was obtained from nitrogen sorption isotherm. SEM images revealed Ce(HPO<sub>4</sub>)<sub>2</sub>.xH<sub>2</sub>O exhibited a nanorod-like structure along with particles and clusters. The maximum specific capacitance of 114 F g<sup>−1</sup> was achieved at 0.2 A g<sup>−1</sup> current density for Ce(HPO<sub>4</sub>)/NF electrode material in a three-electrode configuration. Furthermore, the fabricated symmetric supercapacitor (SSC) based on Ce(HPO<sub>4</sub>)<sub>2</sub>.xH<sub>2</sub>O//Ce(HPO<sub>4</sub>)<sub>2</sub>.xH<sub>2</sub>O demonstrates reasonable specific energy (2.08 Wh kg<sup>−1</sup>), moderate specific power (499.88 W kg<sup>−1</sup>), and outstanding cyclic durability (retains 92.7% of its initial specific capacitance after 5000 GCD cycles).