講演情報
[17p-M_135-3]Hydrothermally Synthesized CuO Anode Material with Different Durations for Rechargeable Lithium-Ion Batteries
〇(D)Roshan Fernando1, T. H. N. G. Amaraweera1,2, K.M.D.C. Jayathilaka3, L. S. R. Kumara4, R.P. Wijesundera3, H.W.M.A.C. Wijayasinghe1 (1.NIFS, 2.Uva Wellassa Univ., 3.Univ. of Kelaniya, 4.JASRI)
キーワード：
Anode materials、Hydrothermal method、Li-ion battery
CuO is a promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity (674 mA h g-1), low cost, non-toxicity, and excellent capacity retention. Its electrochemical performance is influenced by structural characteristics and synthesis methods, particularly the hydrothermal method which has not been extensively studied. This study focuses on synthesizing CuO via hydrothermal treatment at 200 °C for varying durations (2, 4, 6, and 8 hours). The 6-hour synthesized CuO exhibited optimal structural features and superior electrochemical performance, achieving a specific discharge capacity of 2483.1 mA h g−1 at 0.2 C and a Coulombic efficiency of 55.2%. After 50 cycles, the discharge capacity was 391.6 mA h g−1 with a Coulombic efficiency of 98.6%. The study highlights the advantages of hydrothermal synthesis in enhancing the electrochemical properties of CuO anodes.