Nanostructured silicon spheres prepared by a controllable magnesiothermic reduction as anode for lithium ion batteries

Insights into the conversion behavior of SiO-C hybrid with pre-treated graphite as anodes for Li-ion batteries

“…The cathodic peak at 0.10 V for graphite is not distinct because of the overlapping effect of the cathodic peak near 0 V for Si. The anodic peaks centered at 0.35 V and 0.50 V are due to a two-step process of lithium extraction from Li x Si to Si [31,32]. Furthermore, the amorphous carbon derived from sucrose showed no characteristic peaks in cathodic and anodic processes as expected [33].…”

Metal-assisted chemical etching of silicon and the behavior of nanoscale silicon materials as Li-ion battery anodes

“…In addition, the influence of doping and conductive additives on their performance will be discussed. Various Si nanostructures have been investigated as viable anode materials for LIBs, including Si nanopillars [202], Si NWs [203][204][205], Si nanowall structures formed via lithography [206], core-shell Si NWs [207,208], Si inverse opal structures, Si spheres [209], Si nanotubes [210], Si NPs [184], pomegranateinspired Si nanostructures [211], and Si NWs decorated with Si NPs [212]. Considerable progress has been made regarding nanostructured Si as an active (insertion) and passive (scaffold) anode material [72,213,214] and the viability of the approach looks promising [215].…”

Scalable synthesis of Si/SiO2@C composite from micro-silica particles for high performance lithium battery anodes

“…As shown in Fig. 3(a) and (b) , after being broken and activated by mechanical milling [20], SiO 2 particle size is around 0.4μm. It demonstrates that the SiO 2 particles are downsized considerable.…”

“…Si materials are usually synthesized by chemical vapor desposition or liquid chemical method which often involves the use of toxic silane or SiCl 4 and requires complex synthetic procedures, limiting its practical applications [20]. Therefore, it is necessary to look for an abundant resources and find an extensible synthetic method for scalable fabrication of Si-based anode materials.…”