Generation of B-doped graphene nanoplatelets using a solution process and their supercapacitor applications

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Chemically modified graphene (CMG) nanoplatelets possess desirable electrical properties and high surface area for diverse applications.
• Chemical doping is a key strategy for tuning the electronic characteristics of graphene-based materials.

Purpose of the Study:

• To develop a large-scale solution-based production method for novel boron-doped graphene nanoplatelets (B-rG-O).
• To investigate the performance of these B-rG-O materials as electrodes for supercapacitors.

Main Methods:

• Large-scale synthesis of boron-doped graphene oxide (B-rG-O) via reduction of graphene oxide with a borane-tetrahydrofuran adduct under reflux.
• Characterization of B-rG-O material properties, including specific surface area.
• Evaluation of supercapacitor performance using two- and three-electrode cell measurements in aqueous electrolyte.

Main Results:

• The synthesized B-rG-O exhibited a high specific surface area of 466 m²/g.
• Supercapacitors fabricated with B-rG-O demonstrated a high specific capacitance of 200 F/g.
• The B-rG-O materials showed superior surface area-normalized capacitance compared to conventional carbon-based supercapacitor materials and maintained good stability over 4500 cycles.

Conclusions:

• This study reports the first solution-process production of B-doped graphene nanoplatelets and their application in supercapacitors.
• The energy storage mechanism in B-rG-O supercapacitors involves both ion adsorption and electrochemical redox reactions.
• Boron-doped graphene nanoplatelets represent a promising material for advanced energy storage applications.