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Bismuth (Bi) has attracted attention as a promising anode for sodium‐ion batteries (SIBs) owing to its suitable potential and high theoretical capacity. However, the large volumetric changes during cycling leads to severe degradation of electrochemical performance and limits its practical application. Herein, Bi nanoflowers are encapsulated in N‐doped carbon frameworks to construct a novel Bi@NC composite...
Functionalized graphene was synthesized via the reduction of graphene oxide with poly(diallyldimethylammonium chloride) (PDDA). This reduced graphene oxide (RGO) changed from a negative to a positive charge. The negatively charged MnO2 nanosheets were then anchored on the positively charged surface of the PDDA- functionalized RGO (PFRGO) sheet by electrostatic self-assembly deposition. The strong...
Single-walled carbon nanotubes (SWNTs) have been synthesized by an arc discharge method using asphalt and petroleum coke as carbon source. The morphology and structure of SWNT products synthesized with Fe as catalyst were characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy and energy dispersive X-ray spectroscopy (EDX)....
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