Synthesis and Lithium Storage Performance of Three-Dimensional Mesostructured ZnCo2O4 Cubes

Xu ZHEN, 1 南开大学环境科学与工程学院,天津300071,1 College of Environmental Science and Engineering, Nankai University, Tianjin 300071, P. R. China, Xue-Jing GUO, 2 61413部队,湖北襄阳441003,2 61413 Troops, Xiangyang 441003, Hubei Provnce, P. R. China
2017 Wuli huaxue xuebao  
Novel three-dimensional (3D) mesostructured ZnCo2O4 cubes are prepared through a convenient and practical hydrothermal route combined with an annealing treatment. The as-prepared ZnCo2O4 cubes range from 3 -4 µm in size, and are composed of a large number of nanoparticles and pores. According to N2 adsorption-desorption measurements, the as-synthesized ZnCo2O4 cubes have a high BET surface area (41.4 m 2 •g -1 ) and mesoporous (6.32 nm) nature. Lithium ion batteries (LIBs) are assembled using
more » ... e as-prepared ZnCo2O4 nanomaterial and metallic lithium as the anode and the cathode, respectively, and their lithium storage performance is investigated. The electrode material exhibits highly reversible lithium storage capacity and strong cycling stability at high current density for 100 cycles. More importantly, the ZnCo2O4 cube electrode still presents a relatively high specific capacity at high rate. The excellent lithium storage performance is attributed to the novel structure of the 3D mesostructured cubes, which can facilitate Li + diffusion, increase electrode/electrolyte contact area, and endure volume changes the during Li + insertion/extraction process.
doi:10.3866/pku.whxb201612222 fatcat:fzkakv5qqbd5zceufvcepqsiau