Synthesis of Graphene from Pencils Graphite Via Electrochemical Exfoliation Method as a Cu-Foil Coating on the Anode-Free Lithium-Ion Battery

Neka Nur Aida (Department of Physics, Universitas Sebelas Maret Jalan Ir. Sutami 36 A, Kentingan, Surakarta, Jawa Tengah, 57126, Indonesia)
Muhammad Ikhsanudin (Center of Excellent for Electrical Energy Storage Technology, Universitas Sebelas Maret Jalan Slamet Riyadi 435, Purwosari, Surakarta, Jawa Tengah, 57146, Indonesia)
Anif Jamaludin (Center of Excellent for Electrical Energy Storage Technology, Universitas Sebelas Maret Jalan Slamet Riyadi 435, Purwosari, Surakarta, Jawa Tengah, 57146, Indonesia Department of Physics Education Universitas Sebelas Maret Jalan Ir. Sutami 36 A, Kent)
Anafi Nur'aini (School of Energy Systems, LUT University, Finland)
Eka Lutfi Septiani (Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan)
Hendri Widiyandari (Department of Physics, Universitas Sebelas Maret Jalan Ir. Sutami 36 A, Kentingan, Surakarta, Jawa Tengah, 57126, Indonesia Center of Excellent for Electrical Energy Storage Technology, Universitas Sebelas Maret Jalan Slamet Riyadi 435, Purwosari, Su)

ALCHEMY Jurnal Penelitian Kimia
Vol 20, No 1 (2024): March

The Anode-free Li-ion Battery (AFLB) is an alternative to a new Li-ion battery model that offers high energy density at the same battery size as conventional models. Uncontrolled dendrite growth inactive the lithium deposition, resulting in decreased specific capacity, shortened lifecycle, and reduced coulombic efficiency. This work reported the utilization of graphene derived from pencil graphite for coating Cu foil as a current collector in AFLBs, to mitigate the formation of lithium dendrites and enhance battery capacity. The graphene-coated Cu foil exhibits a specific capacity of 143 mAh/g, representing a 20 mAh/g increase compared to batteries lacking a graphene coating. The coulombic efficiency of the battery with graphene coating in the charging and discharging process for three cycles is 84.53% in the 1st cycle, 101.44% in the 2nd cycle, and 98.58% in the 3rd cycle.