Self-doped carbon architectures with heteroatoms containing nitrogen, oxygen and sulfur as high-performance anodes for lithium- and sodium-ion batteries

N‐Doping and Defective Nanographitic Domain Coupled Hard Carbon Nanoshells for High Performance Lithium/Sodium Storage

“…The peak at 1310 cm −1 is corresponding to the stretching vibration of CN band . It has been reported that, proper amount of oxygen functional groups on the carbon framework can react with lithium/sodium ions, resulting in improved storage capacity . For example, the CO groups can be reduced by Li + /Na + when the voltage versus Li/Na is higher than 1.5 V (Equation (S7), Supporting Information), thus contributing a certain degree of capacity .…”

High performance carbon-coated hollow Ni12P5 nanocrystals decorated on GNS as advanced anodes for lithium and sodium storage

“…Thus, the electrochemical behaviors are surface capacitive lithium storage behaviors. [44][45][46][47] In the first cycle, the reduction peaks are located at around 1.5 and 0.7 V, which represent the irreversible structure change, lithiation and formation of solid electrolyte interphase (SEI), respectively. Besides, the oxidation peaks are observed at around 1.0, 1.5 and 2.4 V, which can be severally attributed to the gradual reduction of Li3P.…”

A New Anode for Lithium‐Ion Batteries Based on Single‐Walled Carbon Nanotubes and Graphene: Improved Performance through a Binary Network Design

“…The XRD pattern showed as harp and very strong diffraction peak at 268,w hich corresponded to the (002) plane of graphite, thus suggesting ag raphitic structure with ultrahigh crystallinity in the as-prepared materials (Figure 3a and the Supporting Information, Figure S3 a). [29] In the Raman spectra, as trong peak was observed at 1583 cm À1 and at iny peak was observed at 1346 cm À1 ,w hich werea ttributed to the Ga nd Dbands, respectively (Figure 3b andt he…”

“…The composition and crystal structure of the graphene foam, SWCNT foam, and SWCNT‐GF were also evaluated by using XRD and Raman spectroscopy (Figure and the Supporting Information, Figure S3). The XRD pattern showed a sharp and very strong diffraction peak at 26°, which corresponded to the (002) plane of graphite, thus suggesting a graphitic structure with ultrahigh crystallinity in the as‐prepared materials (Figure a and the Supporting Information, Figure S3 a) . In the Raman spectra, a strong peak was observed at 1583 cm −1 and a tiny peak was observed at 1346 cm −1 , which were attributed to the G and D bands, respectively (Figure b and the Supporting Information, Figure S3 b) .…”