Preparation and electrochemical properties of Ca-doped Li4Ti5O12 as anode materials in lithium-ion battery

Preparation and characterization of W-doped Li4Ti5O12 anode material for enhancing the high rate performance

“…To overcome the common problems of this anode material, various anode materials with improved reversible capacity and stability over commercial graphite have been proposed for lithium-ion batteries. Among the studied anode materials, Li 4 Ti 5 O 12 (LTO) has been regarded as an attracting substitute anode material for graphite, because it has fast Li + insertion and de-insertion ability, excellent cycle reversibility and high thermodynamic stability due to its voltage plateau at 1.55 V vs. Li/Li + , which can avoid the reduction of the electrolyte on the electrode surface and hence improve the safety of lithium-ion batteries [4,5]. Moreover, unlike the conventional carbonous materials, which obviously expand and contract in volume during lithium insertion-deinsertion, it is considered as a zero strain material with negligible volume change during charging and discharging process.…”

Copper‐Doped Dual Phase Li4Ti5O12–TiO2 Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

“…The discharge capacity was 162.4 and 138.7 mAh g À1 at 1 and 10C after 100 cycles, respectively. [21] Kim and Park investigated the effect of doping Zr 4 + into LTO and fabricated 1 D Zr-doped Li 4 Ti 5 O 12 nanofibers. The LTO-Zr0.05 sample exhibited the best electrochemical performance.…”

How to improve the stability and rate performance of lithium-ion batteries with transition metal oxide anodes

“…10). [45][46][47] In the equivalent circuit, R e is the electrolyte resistance; R ct is the charge-transfer resistance; Z w is the Warburg impedance related to the diffusion of Li ions into the bulk electrodes, and CPE is the constant phase-angle element, involving double layer capacitance. Whether the EIS was tested initially or aftercan lead to rapid electron transport during lithiation/ delithiation process and thus result in significant improvement on the rate performance.…”

“…And the inclined line in the low-frequency response indicates the Warburg impedance related to Li-ion diffusion in the solid. 47,76 Using the equivalent circuit model in the inset of Fig. 15, 39,46 R ct can be obtained by fitting the spectra.…”