Impact of preprocessing of graphene additive via ultrasonication on the electrochemical performance of activated carbon/graphene composite lithium-ion battery anodes

Shahroudi H, Shaker M, Sadeghi Ghazvini A, Molababaei M, Samandari H, Hemmati Saznaghi M, Javanmardi S, Farhadi S, Chameh B, Hajizadeh A, Riahifar R, Raissi B, Sahba Yaghmaee M, Shahalizade T (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Journal of Materials Science: Materials in Electronics Springer

Book Volume: 36

Article Number: 1529

Journal Issue: 24

DOI: 10.1007/s10854-025-15611-3

Abstract

This research investigates the impact of graphene sonication before mixing with activated carbon (AC) on their electrochemical performance as an anode active material for lithium-ion batteries (LIBs). 5 wt.% graphene is used as an additive in both powder form (GP) and as a suspension in a solvent (GL). The initial discharge capacities and coulombic efficiencies of the AC anode at 0.05 A g−1 (1578 mAh g−1, 38%), are enhanced by the addition of graphene, AC-5% GP (2593 mAh g−1, 41%) and AC-5% GL (3969 mAh g−1, 41%). After 300 cycles at 5 A g−1, the capacity retention is ~ 42% for AC, 86% for AC-5% GP, and 95.45% for AC-5% GL. The AC-5% GL anode exhibits an energy density of 1528 Wh kg−1 at a power density of 19.3 W kg−1 and 120 Wh kg−1 at 2386 W kg−1. The superior electrochemical performance of AC-5% GL is attributed to the dispersion and exfoliation of the graphene sheets in the solvent, increasing the average pore diameter from 3.00 to 3.87 nm and enhancing electrolyte uptake, as confirmed by nitrogen adsorption–desorption isotherms and wetting tests. This study highlights the influence of graphene pre-sonication before mixing with AC for optimized LIB anode performance.

Authors with CRIS profile

Majid Shaker Lehrstuhl für Physikalische Chemie II

Involved external institutions

Institute of Materials and Energy (MERC) IR Iran, Islamic Republic of (IR) Tarbiat Modares University IR Iran, Islamic Republic of (IR) University of Eastern Finland FI Finland (FI)

How to cite

APA:

Shahroudi, H., Shaker, M., Sadeghi Ghazvini, A., Molababaei, M., Samandari, H., Hemmati Saznaghi, M.,... Shahalizade, T. (2025). Impact of preprocessing of graphene additive via ultrasonication on the electrochemical performance of activated carbon/graphene composite lithium-ion battery anodes. Journal of Materials Science: Materials in Electronics, 36(24). https://doi.org/10.1007/s10854-025-15611-3

MLA:

Shahroudi, Hamideh, et al. "Impact of preprocessing of graphene additive via ultrasonication on the electrochemical performance of activated carbon/graphene composite lithium-ion battery anodes." Journal of Materials Science: Materials in Electronics 36.24 (2025).

BibTeX: Download