Microsized TiO2 activated by high-energy ball milling as starting material for the preparation of Li4Ti5O12 anode material

Defects in Li4Ti5O12 induced by carbon deposition: an analysis of unidentified bands in Raman spectra

Lithium titanate (Li₄Ti₅O₁₂, LTO) has already occupied its niche as an anode material for high-power and long-lifespan lithium batteries, but some novel directions for basic and applied research are still open. One of the most promising approaches in improving its properties, e.g., electronic conductivity and rate capability, is based on controllable defect engineering. The "defects" may be intentionally introduced into LTO via doping, surface modifications, and the synergy between them. However, the defects, which have significant effects to the electrical and electrochemical properties, are usually extremely dilute. Reliable material characterizations are essential and challenging, but the instrumental tools for revealing dilute defects are still insufficient. Herein, detailed analyses on the surface or subsurface defects of carbon-coated LTO were performed using various material characterization methods. Raman spectroscopy has been identified as a unique tool for the probing of structural defects.

Electrochemical properties of lithium–titanium oxide, modified with Ag–Cu particles, as a negative electrode for lithium-ion batteries

Composites of Li₄Ti₅O₁₂ with Ag–Cu particles were successfully synthesized by solid-state reaction followed by thermal decomposition of the metal substrates.

Signal amplification biosensor based on DNA for ultrasensitive electrochemical determination of metronidazole

The biosensor (PDDA-GN/DNA/GCE) showed remarkable signal amplification performance toward the reduction of metronidazole, and was applied to determinate metronidazole in urine and lake water samples with satisfactory results.

Li4Ti5O12 hollow mesoporous microspheres assembled from nanoparticles for high rate lithium-ion battery anodes

A hydrothermal strategy was used to fabricate Li₄Ti₅O₁₂ hollow mesoporous microspheres assembled by thousands of nanoparticles. Much enhanced electrical properties were obtained during the charge/discharge tests.