Home Publications Research Grants Inventions & Patents Awards Additional Research Activities Faculties & Institutions Research Areas

A scalable dual activation strategy to construct heteroatom-doped graphene-reinforced porous carbon with tunable pores for supercapacitors

Li H, Li Y, Shen H, Shaker M, Zada I, Zhu S, Li Y (2025)

---

Publication Type: Journal article

Publication year: 2025

Journal

Book Volume: 640

Article Number: 236757

DOI: 10.1016/j.jpowsour.2025.236757

Abstract

The development of scalable synthesis methods for heteroatom-doped carbon with tailored pore structures remains a significant challenge. In this study, we present a dual-activation strategy employing KOH and K3PO4 to fabricate heteroatom-doped graphene-reinforced porous carbon with tunable pores (1–4 nm) through electrostatic self-assembly of chitosan and graphene oxide. The optimized material demonstrates a large specific surface area (2672.39 m² g⁻¹) with dominant (1–4 nm) pores (V(1-4) nm = 1.23 cm³ g⁻¹, V(1-4) nm/Vt = 77.36 %) and favorable heteroatom configurations. Electrochemical tests in a three-electrode system demonstrated exceptional performance, including a specific capacitance of 371 F g⁻¹ at 0.5 A g⁻¹, excellent rate capability (266 F g⁻¹ at 100 A g⁻¹), and remarkable cycling stability (98.2 % retention after 50,000 cycles) in 6 M KOH. Symmetric supercapacitors deliver an energy density of 38.9 Wh kg⁻¹ in 1 M TEABF4/AN electrolyte while maintaining 98.5 % capacity retention over 20,000 cycles in 6 M KOH. This study provides novel insights for designing carbon materials with synergistic pore structure and heteroatom engineering for advanced energy storage.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Li, H., Li, Y., Shen, H., Shaker, M., Zada, I., Zhu, S., & Li, Y. (2025). A scalable dual activation strategy to construct heteroatom-doped graphene-reinforced porous carbon with tunable pores for supercapacitors. Journal of Power Sources, 640. https://doi.org/10.1016/j.jpowsour.2025.236757

MLA:

Li, Hongjie, et al. "A scalable dual activation strategy to construct heteroatom-doped graphene-reinforced porous carbon with tunable pores for supercapacitors." Journal of Power Sources 640 (2025).

BibTeX: Download