Ag-doped Li2ZnTi3O8 as a high rate anode material for rechargeable lithium-ion batteries

A new strategy for synthesis of lithium zinc titanate as an anode material for lithium ion batteries

“…The largest specific capacities are delivered for the sample LZTO-700-1 at the high current density of 1 A g À1 . The discharge specific capacities are larger and the cyclic performance is better than the previous reports [9,11] for the sample LZTO-700-1. However, compared with the low current densities of 0.1 and 0.2 A g À1 , the cyclic performance of the four samples gets worse at the high current density of 1 A g À1 .…”

“…However, compared with the low current densities of 0.1 and 0.2 A g À1 , the cyclic performance of the four samples gets worse at the high current density of 1 A g À1 . The phenomenon occurs in previous reports [9,11]. It is related to the low electronic conductivity of Li 2 ZnTi 3 O 8 , which leads to the poor high rate performance [9][10][11][12].…”

“…6. It can be seen that there is a charge plateau about 1.38 V and a corresponding discharge plateau about 0.66 V on the curves for each sample, which is the characteristic of the electrochemical reaction for Li 2 ZnTi 3 O 8 [9][10][11][12]. The initial discharge specific capacities are 191.4, 212.9, 221.3 and 192.3 mAh g À1 and the charge specific capacities are 167.4, 186.4, 193.5 and 178.9 mAh g À1 for LZTO-650-1, LZTO-700-1, LZTO-750-1 and LZTO-800-1, respectively.…”

“…So far, Li 2 ZnTi 3 O 8 has been synthesized via conventional solidstate reaction method [9][10][11], modified solid-state reaction route [3,12], combining the sol-gel chemistry and electrospinning technique [13]. High temperature solid-state reaction is the primary industrial method.…”

Synthesis and characterization of Li2Zn0.6Cu0.4Ti3O8 anode material via a sol-gel method

“…In recent years, three kinds of strategies such as particle size reducing [7,[10][11], surface coating [6,[12][13] and lattice doping [14][15][16][17] have been developed to improve the electrochemical performance of Ti-based anode material. Reducing particle size can shorten the diffusion path of Li + and facilitate anode materials contact with the electrolyte fully, thus improving its initial discharge capacity.…”