Enhanced Performance of Laser-Induced Graphene Supercapacitors via Integration with Candle-Soot Nanoparticles
Source abstract
Abstract
Laser-induced graphene (LIG) has been emerging as a promising electrode material for supercapacitors due to its cost-effective and straightforward fabrication approach. However, LIG-based supercapacitors still face challenges with limited capacitance and stability. To overcome these limitations, in this work, we present a novel, cost-effective, and facile fabrication approach by integrating LIG materials with candle-soot nanoparticles. The composite electrode is fabricated by laser irradiation on a Kapton sheet to generate LIG material, followed by spray-coating with candle-soot nanoparticles and annealing. Materials characterization reveals that the annealing process enables a robust connection between the nanoparticles and the LIG materials and enhances nanoparticle graphitization. The prepared supercapacitor yields a maximum specific capacitance of 15.1 mF/cm 2 at 0.1 mA/cm 2, with a maximum energy density of 2.1 μWh/cm 2 and a power density of 50 μW/cm 2 . Notably, the synergistic activity of candle soot and LIG surpasses the performances of previously reported LIG-based supercapacitors. Furthermore, the cyclic stability of the device demonstrates excellent capacitance retention of 80% and Coulombic efficiency of 100% over 10000 cycles.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Graphene research and applications · Laser-Ablation Synthesis of Nanoparticles
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
IMDEA Materials Institute, Tecnogetafe, Calle Eric Kandel, 2, 28906 Getafe, Madrid Spain
Mechanical Engineering Department, Punjab Engineering College, Sector 12, Chandigarh, 160012, India
Department of Mechanical Engineering, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan 342030, India
Microscopy of Nanoscale Structures and Mechanisms (MNM), Laboratory for Electron Microscopy (LEM), Karlsruhe Institute of Technology, Engesserstr. 7, D-76131 Karlsruhe, Germany
Institut für Angewandte Materialien, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Institut für Funktionelle Grenzflächen, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Idaho National Laboratory, 1955 North Fremont Avenue, Idaho Falls, Idaho 83415, United States
Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Department of Chemical Engineering, Indian Institute of Technology, Kanpur, 208016, Uttar Pradesh, India
Funding
Deutsche Forschungsgemeinschaft
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