Co3O4 has shown acceptable electrochemical properties as the anode material of Li secondary batteries. In detail, its capacity reached about 700 mAh/g, twice as high as graphite, and 93.4% of initial capacity was retained after 100 cycles. EIS (electrochemical impedance spectroscopy) analyses revealed that after the 1st cycle, the insertion or extraction of Li ions in Co3O4 can occur homogeneou...

Conversion/alloying materials, such as transition metal (TM)-doped ZnO, are showing superior performance over pure ZnO due to the presence of TM, enabling reversible formation Li2O enhanced electronic conductivity within single particle once being reduced metallic state upon lithiation. Herein, impact introducing Co representative TM at atomic level in compared with mixtures nano- and microsize...

Despite great technological interest in nanostructured zinc oxide (ZnO) for a large variety of applications, such as lightemitting diodes, gas sensors, or dye-sensitized solar cells, their investigation as lithium-ion anode materials has been reported rather scarcely to date. In fact, although a theoretical specific capacity of about 988 mAhg@1 (if the reaction ZnO+ 3Li+3e$LiZn+Li2O is consider...

The melt-quenching technique was used to prepare a series of chromium-doped borate glasses with the composition xCr2O3–(70 ? x) B2O3–30 Li2O–(x = 0, 0.1, 0.2, 0.3 and 0.5 mol %). low-doping level here employed allowed unambiguously identify well-defined near-edge Cr6+ optical transitions, precisely determine band gap glass host. Additional Cr3+ transitions were observed in visible regime, rende...

parent red-brown and brown single crystals, respec tively, and had average size of 3.0•~2.8•~1.1mm and 3.6•~2.8•~1.0mm. (3) The content of Li2O in all the Li doped crystals was less than 0.01wt%, whereas the Na2O content was more than 0.07wt% and increased with increasing addition of Na2O. (4) Crystals doped with Li2O showed no variations in the lattice constant, but the lattice constant of c-a...

High quality and large size Al-doped CsLiB6O10 (CLBO) single crystals have been successfully grown by top-seeded solution growth (TSSG) technique using Cs2O–Li2O–MoO3 fluxes. The advantages of this newly developed flux system were investigated by viscosity measurements and growth experiments. Al-doped CLBO presents a very high transmittance in the visible region and the weak absorption values a...

Rapid progress has been made in realizing battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report LixSi-Li2O core-shell nanoparticles as an excellent prelithiation reagent with high spe...

The lithium silicates have attracted scientific interest due to their potential use as high-temperature sorbents for CO2 capture. The electronic properties and thermodynamic stabilities of lithium silicates with different Li2O/SiO2 ratios (Li2O, Li8SiO6, Li4SiO4, Li6Si2O7, Li2SiO3, Li2Si2O5, Li2Si3O7, and α-SiO2) have been investigated by combining first-principles density functional theory wit...