Polyaniline-derived amorphous carbon conformally coated multilayer graphene platelets as anode for lithium-ion batteries

• Published in: Diamond and related materials 2024-11, Vol.149, p.111494, Article 111494
• Main Authors: Kali, Ravi, T.V., Anusha, N, Ravikiran, Padya, Balaji, Jain, P.K.
• Format: Article
• Language: English
• Subjects: Anode; Electrochemical behavior; Graphene platelets; Li-ion batteries; Polyaniline
• ISSN: 0925-9635
• DOI: 10.1016/j.diamond.2024.111494

Materials made of amorphous carbon that includes nitrogen have been extensively researched for use as negative electrodes in systems that store energy like lithium-ion batteries (LIBs). Graphene platelets (GP) covered with polyaniline (PANi) were effectively created through polymerization and utilized as anode material for lithium-ion batteries. The prepared AGP composite material, utilized in lithium-ion batteries as an anode material (AM), was evaluated for its electrochemical properties. It produced a specific capacity (SC) of 450 mAhg−1 for 160 electrochemical cycles at a current density (CD) of 100 mAg−1 and 256 mAhg−1 for 500 cycles at a high current density (CD) of 1 Ag−1. These suggest that it could be a good option for the anode material (AM) in lithium-ion batteries (LIBs). [Display omitted] •Amorphous carbon derived from polyaniline•Synergistic effect of amorphous carbon coating on electrochemical performance•Straightforward method for covering graphene platelets (GP) with N-containing amorphous carbon•Amorphous carbon coated GP exhibited a specific capacity of ∼ 256 mAh/g at high current density (1 A/g) and a long cycle life.