研究目的
To develop a class of novel and flexible electrode materials consisting of N-doped graphene quantum dots supported by carbon nanotubes grown on carbon cloth for improved lithium storage capacities.
研究成果
The CC/CNT@N-GQD electrodes, especially those annealed at 500 °C with high pyridinic N content, exhibit excellent electrochemical performance, including high reversible capacity and rate capability. This design opens new avenues for developing high-capacity GQDs-based LIB anodes for flexible and wearable electronic devices.
研究不足
The study focuses on the synthesis and initial electrochemical performance of CC/CNT@N-GQD electrodes. Long-term stability and scalability for commercial applications are not extensively explored.
1：Experimental Design and Method Selection
The study involved the synthesis of N-doped graphene quantum dots (N-GQDs) supported by carbon nanotubes (CNTs) grown on carbon cloth (CC) via chemical vapor deposition (CVD) and electrodeposition processes. The annealing temperature was varied to control the N-doping types.
2：Sample Selection and Data Sources
Carbon cloth was used as the substrate. N-GQDs were synthesized by pyrolysis of organic precursors and assembled onto the surface of CC/CNT substrates via electrodeposition.
3：List of Experimental Equipment and Materials
Carbon cloth (thickness: 0.36 mm) from Hong Kong Phychemi Co, Ltd., China. Other chemicals from Shanghai Chemical Reagent Co. Ltd. SEM (JEOL FESEM-6700F), AFM (SPM-9600), TEM (JEOL JEM-2100F), XRD (Rigaku 18 kW D/max-2550), XPS (ESCALAB 250), Raman spectrometer (Renishaw in plus), FT-IR spectrometer (Bruker Equinox55).
4：Experimental Procedures and Operational Workflow
1. Growth of CNTs on CC via CVD. 2. Synthesis of N-GQDs by pyrolysis. 3. Electrodeposition of N-GQDs onto CC/CNT substrates. 4. Annealing at different temperatures (300, 500, 700 °C) in Ar atmosphere. 5. Characterization and electrochemical testing.
5：Data Analysis Methods
Electrochemical performance evaluated using cyclic voltammetry (CV), galvanostatic discharge-charge tests, and electrochemical impedance spectroscopy (EIS).
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
X-ray Photoelectron Spectrometer
ESCALAB 250
Thermo Fisher Scientific
Elemental composition analysis
-
Fourier Transform Infrared Spectrometer
Equinox55
Bruker
Chemical bonding analysis
-
Scanning Electron Microscope
FESEM-6700F
JEOL
Morphology characterization
-
Transmission Electron Microscope
JEM-2100F
JEOL
Microstructure analysis
-
X-ray Diffractometer
D/max-2550
Rigaku
Crystal structure analysis
-
Carbon cloth
0.36 mm
Hong Kong Phychemi Co, Ltd.
Substrate for electrode material
-
Atomic Force Microscope
SPM-9600
Surface topography analysis
-
Raman Spectrometer
in plus
Renishaw
Molecular structure analysis
-
登录查看剩余6件设备及参数对照表
查看全部
