biostudies-literatureXu ZNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu Province8753-8758https://www.ebi.ac.uk/biostudies/studies/S-EPMC9061834biostudies-literatureUnknown9(16)Tin (Sn) has wide prospects in applications as an anode electrode material for Li-ion batteries, due to its high theoretical specific capacity. However, the large volume expansion of Sn during the charge-discharge process causes a performance reduction of lithium-ion batteries (LIBs). Here, Sn encapsulated N-doped porous carbon fibers (Sn/NPCFs) were synthesized through an electrospinning method with a pyrolysis process. This structure was beneficial for the lithium ion/electron diffusion and buffered the large volume change. By adjusting the amount of Sn, the hybrid carbon fibers with different Sn/carbon ratios could be prepared, and the morphology, composition and properties of the Sn/NPCFs were characterized systematically. The results indicated that the Sn/NPCFs with a Sn-precursor/polRSC advancesSn-encapsulated N-doped porous carbon fibers for enhancing lithium-ion battery performance.PMC90618342167320216KJD150004Ni XFan LHan JGuo RXu ZfalseSn-encapsulated N-doped porous carbon fibers for enhancing lithium-ion battery performance.Tin (Sn) has wide prospects in applications as an anode electrode material for Li-ion batteries, due to its high theoretical specific capacity. However, the large volume expansion of Sn during the charge-discharge process causes a performance reduction of lithium-ion batteries (LIBs). Here, Sn encapsulated N-doped porous carbon fibers (Sn/NPCFs) were synthesized through an electrospinning method with a pyrolysis process. This structure was beneficial for the lithium ion/electron diffusion and buffered the large volume change. By adjusting the amount of Sn, the hybrid carbon fibers with different Sn/carbon ratios could be prepared, and the morphology, composition and properties of the Sn/NPCFs were characterized systematically. The results indicated that the Sn/NPCFs with a Sn-precursor/pol2019-01-01T00:00:00Z2019 Mar2025-04-04T09:10:08.38Z2025-04-04T09:10:08.38ZS-EPMC90618343551765410.1039/c8ra10201e