Ultra‐uniform SnOx/carbon nanohybrids for lithium‐ion batteries are successfully prepared by solvent replacement and subsequent electrospinning. The resulting 1D nanostructure with Sn‐N bonding between the SnOx and N‐containing carbon nanofiber matrix can not only tolerate the substantial volume change and suppress the aggregation of SnOx, but also enhances the transport of both electrons and ions for the embedded SnOx, thus leading to high cycling performance and rate capability.
Sb-based nanocomposites are attractive anode materials for batteries as they exhibit large theoretical capacity and impressive working voltage.However,tardy potassium ion diffusion characteristics,u nstable Sb/electrolyte interphase, and huge volume variation pose ac hallenge,h indering their practical use for potassium-ion batteries (PIBs). Now,asimple robust strategy is presented for uniformly impregnating ultrasmall Sb nanocrystals within carbon nanofibers containing an arrayo fh ollown anochannels (denoted u-Sb@CNFs), resolving the issues abovea nd yielding high-performance PIBs. u-Sb@CNFs can be directly employed as an anode,t hereby dispensing with the need for conductive additives and binders. Such aj udiciously crafted u-Sb@CNF-based anode renders as et of intriguing electrochemical properties,r epresenting large charge capacity,u nprecedented cycling stability,a nd outstanding rate performance.Areversible capacity of 225 mAh g À1 is retained after 2000 cycles at 1Ag À1 .
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.