▎ 摘 要
CuInZnS-decorated graphene (CIZS@graphene) is prepared via a hydrothermal process and investigated as an anode material for lithium-ion batteries. CIZS@graphene exhibits an initial discharge capacity of 1623 mA.h g(-1), at 100 mA g(-1), and at a high rate of 2000 mA g(-1) its reversible capacity is steadily increased from 389 mA h g(-1), to 494 mA h g(-1) in 480 cycles, demonstrating promising stable cycling performance at high rates. Electrochemical impedance spectroscopic studies show that charge-transfer resistances of CIZS@graphene reduces after cycling at high rates, justifying the excellent high-rate performance and stability of the CIZS@graphene anode. (C) 2014 Elsevier B.V. All rights reserved.