Modified SiO as a high performance anode for Li-ion batteries

Electrochemical behavior of SiOx anodes with variation of oxygen ratio for Li-ion batteries

“…The values match well with the other researches [12]. Especially for d-SiO, the experiments are similar to our research considering the structure of active material [13]. But in our work, it was identified that the ratio of oxygen in SiOx causes the variation in initial capacity and irreversibility.…”

A hybrid Si@FeSiy/SiOx anode structure for high performance lithium-ion batteries via ammonia-assisted one-pot synthesis

“…In addition, as a higher content of SiO x causes a higher initial irreversible capacity from the formation of irreversible lithium oxide and/or lithium silicides, the irreversible capacities of the hybrid structures milled for 20-40 h are higher than those milled for 60-100 h ( 16,19,36 In addition, a slightly lower potential of 0.14 V is reported for the formation of Li 4 SiO 4 in the lithiation process of a SiO anode material modied by surface etching and heat treatment, 37 while a value of 0.2 V is reported in a SiO anode prepared by high-energy ball milling. 38 In addition, the formation of Li 2 Si 2 O 5 in the lithiation product of a hollow porous SiO 2 nanocube discharged up to 0 V was also proposed, but there was no distinguishable reaction peak found in the cyclic voltammetry curve.…”

Catalyst Ni-assisted synthesis of interweaved SiO/G/CNTs&CNFs composite as anode material for lithium-ion batteries

“…This is because of the successful addition of carbon nanotubes and carbon nanofibres after chemical vapor deposition process. The diffraction peak of silicon for them are relatively obvious, which could be explained that the disproportionation reaction of SiO happened and the size of the Si crystallite in pure SiO grew during heat treatment under 900°C [25].…”

“…Hwa et al [25] reported a SiO anode with good cycle retention acquired by the disproportionation reaction of SiO under 900°C in combination with the HEMM process. Li et al [26] successfully prepared core-shell structure Si/C composite based on spray drying followed by subsequent pyrolysis process.…”