Journal of Mechanical Design and Testing (JMDT)
Vol 8, No 1 (2026): Article in Press

Electrochemical Performance of Modified Graphite Anode Materials for Lithium-Ion Batteries

Eko Prasetya (PLN Indonesia Power, Jakarta, Indonesia.)
William Abednego Pardede (PLN Indonesia Power, Jakarta, Indonesia.)
Abdulloh Rifai (BRIN-Pusat Riset Material Maju, Jakarta, Indonesia.)
Muhammad Darma Raditya (PLN Indonesia Power, Jakarta, Indonesia.)
Fawaidzdurahman Fawaidzdurahman (PLN Indonesia Power, Jakarta, Indonesia.)
Yudi Hidayat (PLN Indonesia Power, Jakarta, Indonesia.)



Article Info

Publish Date
25 Jun 2026

Abstract

This study investigates the pilot-scale synthesis and characterization of chemically modified graphite anodes for lithium-ion batteries (LIBs), using potassium hydroxide (KOH) etching to enhance surface properties and lithium storage capacity. The low-cost, scalable modification process led to increased interlayer spacing, as confirmed by X-ray diffraction (XRD), indicating successful structural transformation. Scanning electron microscopy (SEM) analysis revealed significant morphological changes with increased porosity, while Brunauer–Emmett–Teller (BET) surface analysis showed a substantial rise in specific surface area, from 10 m²/g to 80 m²/g, confirming the formation of porous structures. Thermogravimetric and Fourier-transform infrared spectroscopy (FTIR) analyses demonstrated high thermal stability and minimal surface functionalization, respectively. Electrochemical performance was evaluated using 18650 cylindrical cells with LiFePO₄ (LFP) cathodes. Batch 4 and 5 cells exhibited optimal N/P ratios of 1.2–1.3, achieving improved specific capacity and cycle stability. Among all batches, Batch 6 demonstrated the highest capacity retention and coulombic efficiency during rate performance testing. These results highlight the potential of KOH-modified graphite as a high-performance anode material and offer valuable insights into scalable production strategies for next-generation LIBs.

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Journal Info

Abbrev

jmdt

Publisher

Subject

Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Description

Design of mechanical components used in engineering structures, machines and engines, computer aided design (CAD), computer aided manufacturing (CAM), the development of methodology for designing machine elements or mechanical components. Finite element analysis, computational fluid dynamics, ...