Pumpkin-Derived Porous Carbon for Supercapacitors with High Performance
Suying Bai1, Guangqun Tan1, Xiaoqin Li2
1College of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, P. R. China.
Chemistry, an Asian Journal
|April 29, 2016
Summary
Pumpkin is a novel, low-cost precursor for porous carbon materials. Pumpkin-derived activated carbon (PAC) offers high capacitance and stability for energy storage devices.
Area of Science:
- Materials Science
- Electrochemistry
- Renewable Energy
Background:
- Developing sustainable and cost-effective precursors for advanced materials is crucial.
- Traditional precursors for porous carbons often involve complex synthesis or high costs.
- Agricultural byproducts offer potential as renewable carbon sources.
Purpose of the Study:
- To explore pumpkin as a novel, low-cost precursor for porous carbon materials.
- To synthesize and characterize pumpkin-derived activated carbon (PAC).
- To evaluate the electrochemical performance of PAC in energy storage applications.
Main Methods:
- Pumpkin was utilized as a precursor for porous carbon preparation.
- The synthesized material was characterized for its morphology, surface area, and porosity.
- Electrochemical performance was assessed using cyclic voltammetry and galvanostatic charge-discharge cycling.
- A symmetrical supercapacitor device was fabricated using PAC electrodes.
Main Results:
- Pumpkin-derived activated carbon (PAC) exhibited a high specific surface area (2968 m²/g) with abundant micro/mesopores.
- PAC demonstrated a high specific capacitance of 419 F/g and excellent cycling stability (93.6% retention after 10,000 cycles).
- A symmetrical supercapacitor based on PAC achieved a high energy density of 22.1 Wh/kg in aqueous electrolyte.
Conclusions:
- Pumpkin is a viable and sustainable precursor for high-performance porous carbon materials.
- PAC possesses superior electrochemical properties suitable for advanced energy storage.
- This research highlights the potential of agricultural waste for developing next-generation supercapacitors.
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