| Title |
Electrolytic exfoliation of few-layer graphene/sodium dodecylbenzenesulfonate for coin- and cylindrical-cell supercapacitor electrodes |
| ID_Doc |
10995 |
| Authors |
Lomas, T; Poochai, C; Sukjit, P; Wasapinyokul, K; Mensing, JP; Tuantranont, A; Sriprachuabwong, C |
| Title |
Electrolytic exfoliation of few-layer graphene/sodium dodecylbenzenesulfonate for coin- and cylindrical-cell supercapacitor electrodes |
| Year |
2023 |
| Published |
|
| DOI |
10.1016/j.diamond.2023.110020 |
| Abstract |
Electrolytic exfoliation of graphite is a promising way to produce graphene quickly, inexpensively, and in an environmentally friendly manner. In this research, sodium dodecylbenzenesulfonate (SDBS), a commonly used anionic surfactant, was dissolved in 1 M H2SO4 to produce SDBS-graphene via electrolytic graphite exfoliation. The AFM analysis validated the thickness of few-layer of SDBS-graphene between 5 and 15 nm. Then, a symmetric coin-cell (CR2032) supercapacitor (SC) comprised of SDBS-graphene and rGO (synthesized via Hummer's method) was assembled with 0.5 M H2SO4 as an electrolyte. The highly exfoliated SDBS-graphene demonstrated a greater capacitive electrochemical response than rGO. The CV and GCD techniques revealed that the specific capacitance of SDBS-graphene was 150 F g- 1 at 0.25 A g- 1 with 20.4 Wh kg-1 of energy density and 494 W kg-1 of power density and that its percentage capacitive retention remained 95 % after 10,000 cycles at 3 A g- 1, compared to the specific capacitance of reduced graphene. In addition, a cylindrical cell SC (CR32650) with SDBS-graphene demonstrated a capacitance of 220 F at 100 mA, along with an energy density of 33 kWh and a power density of 55 kW. This suggests that exfoliated SDBS-graphene may be utilized in SCs with high efficiency and long-term durability. |
| Author Keywords |
Graphene; Sodium dodecylbenzenesulfonate; Electrolytic exfoliation; Supercapacitors |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001012962500001 |
| WoS Category |
Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter |
| Research Area |
Materials Science; Physics |
| PDF |
|