Multichannel Carbon Nanofibers Research Articles

Construction of Co9S8/SnS heterostructures encapsulated in multi-channel carbon nanofibers as long-term stable anodes for sodium-ion batteries

This study presents the design and fabrication of multi-channel self-supported anode materials Co9S8/SnS@MCNFs, through the electrospinning technique. The high compatibility of Co9S8 and SnS at the interface enables the synthesis of a more complete heterostructure within the material, enhancing the electrochemical reaction process through rational heterostructure design. Additionally, the incorporation of high theoretical capacity SnS improves sodium storage performance. The design of multi-channel carbon nanofibers (MCNFs) effectively addresses challenges such as material volume expansion and metal particle aggregation during cycling by providing large specific surface areas and enabling carbon encapsulation. The resulting pore structure and heterostructure formation, coupled with introduction of more defects, enhance the availability of Na+ active sites for electrochemically reversible processes. As expected, Co9S8/SnS@MCNFs exhibit remarkable initial coulombic efficiency (ICE = 92.6 %) and demonstrate stable long-term cycling performance (222.5 mA h g−1 at 2 A g−1 after 400 cycles) for sodium storage, with only a 0.18 % decay rate per cycle. These findings suggest promising application for the electrode material in sustained high-current discharges and long-endurance performance.

Ni nanoparticles embedded in multi-channel carbon nanofibers: Self-supporting electrodes for bifunctional catalysis of hydrogen and oxygen evolution reactions

Nitrogen-doped carbon nanofibers with multi-channels loaded with nanoscale nickel particles (Ni-MNCNF) were achieved by the combination of coaxial electrospinning and pyrolysis. Which was used as a self-supporting electrode for electrochemical hydrogen and oxygen evolution reactions. The multi-channels of the fiber facilitated the fast mass transfer as well as endowed it with more exposed active sites. In addition, nanoscale Ni crystals were dispersed evenly on the fiber walls due to the confinement effect of carbon materials. Furthermore, carbon nanofibers provided an excellent conductive network, which expedited the charge transfer rate and further enhanced catalytic activity. At a current density of 10 mA cm−2, the overpotentials for the hydrogen evolution reaction (HER) were only 65 mV and 203 mV in alkaline and acidic electrolytes, respectively, and the overpotential for the oxygen evolution reaction (OER) was 193 mV in an alkaline electrolyte, promoting its potential industrial applications and reducing the negative impact on the environment. This research presented a strategy for designing self-supporting transition metal-based catalysts with superior activity.

Molybdenum single-atoms decorated multi-channel carbon nanofibers for advanced lithium-selenium batteries.

The cathode in lithium-selenium (Li-Se) batteries has garnered extensive attention owing to its superior specific capacity and enhanced conductivity compared to sulfur. Nonetheless, the adoption and advancement of Li-Se batteries face significant challenges due to selenium's low reactivity, substantial volume fluctuations, and the shuttle effect associated with polyselenides. Single-atom catalysts (SACs) are under the spotlight for their outstanding catalytic efficiency and optimal atomic utilization. To address the challenges of selenium's low chemical activity and volume expansion in Li-Se batteries, through electrospun, we have developed a lotus root-inspired carbon nanofiber (CNF) material, featured internal multi-channels and anchored with molybdenum (Mo) single atoms (Mo@CNFs). Mo single atoms significantly enhance the conversion kinetics of selenium (Se), facilitating rapid formation of Li2Se. The internally structured multi-channel CNF serves as an effective host matrix for Se, mitigating its volume expansion during the electrochemical process. The resulting cathode, Se/Mo@CNF composite, exhibits a high discharge specific capacity, superior rate performance, and impressive cycle stability in Li-Se batteries. After 500 cycles at a current density of 1 C, it maintains a capacity retention rate of 82% and nearly 100% coulombic efficiency (CE). This research offers a new avenue for the application of single-atom materials in enhancing advanced Li-Se battery performance.

Achieving High-Rate and Stable Sodium-Ion Storage by Constructing Okra-Like NiS2/FeS2@Multichannel Carbon Nanofibers.

Transition metal sulfides (TMSs) are considered as promising anode materials for sodium-ion batteries (SIBs) due to their high theoretical capacities. However, the relatively low electrical conductivity, large volume variation, and easy aggregation/pulverization of active materials seriously hinder their practical application. Herein, okra-like NiS2/FeS2 particles encapsulated in multichannel N-doped carbon nanofibers (NiS2/FeS2@MCNFs) are fabricated by a coprecipitation, electrospinning, and carbonization/sulfurization strategy. The combined advantages arising from the hollow multichannel structure in carbon skeleton and heterogeneous NiS2/FeS2 particles with rich interfaces can provide facile ion/electron transfer paths, ensure boosted reaction kinetics, and help maintain the structural integrity, thereby resulting in a high reversible capacity (457 mA h g-1 at 1 A g-1), excellent rate performance (350 mA h g-1 at 5 A g-1), and outstanding long-term cycling stability (93.5% retention after 1100 cycles). This work provides a facile and efficient synthetic strategy to develop TMS-based heterostructured anode materials with high-rate and stable sodium storage properties.

Unraveling the Nucleation and Growth Mechanism of Potassium Metal on 3D Skeletons for Dendrite-Free Potassium Metal Batteries.

Designing three-dimensional (3D) porous carbonaceous skeletons for K metal is one of the most promising strategies to inhibit dendrite growth and enhance the cycle life of potassium metal batteries. However, the nucleation and growth mechanism of K metal on 3D skeletons remains ambiguous, and the rational design of suitable K hosts still presents a significant challenge. In this study, the relationships between the binding energy of skeletons toward K and the nucleation and growth of K are systematically studied. It is found that a high binding energy can effectively decrease the nucleation barrier, reduce nucleation volume, and prevent dendrite growth, which is applied to guide the design of 3D current collectors. Density functional theory calculations show that P-doped carbon (P-carbon) exhibits the highest binding energy toward K compared to other elements (e.g., N, O). As a result, the K@P-PMCFs (P-binding porous multichannel carbon nanofibers) symmetric cell demonstrates an excellent cycle stability of 2100 h with an overpotential of 85 mV in carbonate electrolytes. Similarly, the perylene-3,4,9,10-tetracarboxylic dianhydride || K@P-PMCFs cell achieves ultralong cycle stability (85% capacity retention after 1000 cycles). This work provides a valuable reference for the rational design of 3D current collectors.

Achieving a Quasi‐Solid‐State Conversion of Polysulfides via Building High Efficiency Heterostructure for Room Temperature Na–S Batteries

AbstractThe practical application of room temperature sodium–sulfur (RT Na–S) batteries are prevented by the sulfur insulation, the severe shuttling effect of high‐order sodium polysulfides (Na2Sn, 4 ≤ n ≤ 8), and the sluggish reaction kinetics. Therefore, designing an ideal host material to suppress the polysulfides shuttle process and accelerate the redox reactions of soluble NaPSs to Na2S2/Na2S is of paramount importance for RT Na–S batteries. Here, a quasi‐solid‐state transformation of NaPSs is realized by building high efficiency MoC‐W2C heterostructure in freestanding multichannel carbon nanofibers via electrospinning and calcination methods (MoC‐W2C‐MCNFs). The multichannel carbon nanofibers are interlinked micro‐mesoporous structures that can accommodate volume change of electrode materials and confine the entire redox process of NaPSs (restraining the polysulfides shuttle process). Meanwhile, the MoC‐W2C heterostructure with abundant heterointerfaces can facilitate electron/ion transport and accelerate conversion of NaPSs. Consequently, the S/MoC‐W2C‐MCNFs cathode delivers a high capacity of 640 mAh g−1 after 500 cycles at 0.2 A g−1 and an excellent reversible performance of 200 mAh g−1 after ultralong 3500 cycles at 4 A g−1. What's more, the heterostructure catalytic mechanism (a quasi‐solid‐state transformation) is proposed and confirmed in carbonate electrolyte by combining experimentally and theoretically.

Novel N-doped multichannel carbon nanofiber architecture with porous CoS nanoprisms for high-performance potassium-ion batteries

Novel N-doped multichannel carbon nanofiber architecture with porous CoS nanoprisms for high-performance potassium-ion batteries

Competing polysulfides conversion between edge-N and embedded CoS2 within multichannel carbon nanofibers

The practical application of lithium-sulfur batteries (LSBs) is hindered by a range of challenges, including slow conversion kinetics and inevitable shuttle effect of lithium polysulfide (LiPSs) intermediates, low electrical conductivity and rigorous volume expansion of sulfur. To address these challenges, we initiatively propose a competing catalytic mechanism dominated by two functional components, which aims to accelerate the liquid–liquid–solid conversion for the sulfur reduction reaction (SRR). To achieve this goal, we construct multichannel carbon fibers decorated with edge nitrogen and CoS2 nanoparticles (CoS2/NMCNF) as the cathode host for LSBs. The internal channels provide spatial constraints towards alleviating volume expansion and accelerating electron/ion transmission. Moreover, based on theoretical calculations and experiments, there is a competition between edge nitrogen and embedded CoS2 for catalytic conversion of LiPSs, of which CoS2 plays a major role in the liquid–liquid conversion (Li2S6–Li2S4), while edge-N accelerates the liquid–solid conversion (Li2S4–Li2S2). Consequently, the prepared CoS2/NMCNF electrode has an excellent performance with high initial specific capacity (1,437.9 mAh/g at 0.2C), excellent cycling stability at 3.0C (only about 0.032% capacity decay per cycle after 650cycles), and maintaining good cycling stability even when the sulfur loading increases to 4.10 mg cm−2. This work demonstrates a unique competing catalytic mechanism for the liquid–liquid–solid conversion process of LSBs.

Multi-Channel Hollow Carbon Nanofibers with Graphene-Like Shell-Structure and Ultrahigh Surface Area for High-Performance Zn-Ion Hybrid Capacitors.

Porous carbon is the most promising cathode material for Zn-ion hybrid capacitors (ZIHCs), but is limited by insufficient active adsorption sites and slow ion diffusion kinetics during charge storage. Herein, a pore construction-pore expansion strategy for synthesizing multi-channel hollow carbon nanofibers (MCHCNF) is proposed, in which the sacrificial template-induced multi-channel structure eliminates the diffusion barrier for enhancing ion diffusion kinetics, and the generated ultrahigh surface area and high-density defective structures effectively increase the quantity of active sites for charge storage. Additionally, a graphene-like shell structure formed on the carbon nanofiber surface facilitates fast electron transport, and the highly matchable pore size of MCHCNF with electrolyte-ions favors the accommodation of charge carriers. These advantages lead to the optimized ZIHCs exhibit high capacity (191.4mAhg-1 ), high energy (133.1Whkg-1 ), along with outstanding cycling stability (93.0% capacity retention over 15000 cycles). Systematic ex situ characterizations reveal that the dual-adsorption of anions and cations synergistically ensures the outstanding electrochemical performance, highlighting the importance of the highly-developed porous structure of MCHCNF. This work not only provides a promising strategy for improving the capacitive capability of porous materials but also sheds light on charge storage mechanisms and rational design for advanced energy storage devices.

Nano Sn-SnOx embedded in multichannel hollow carbon nanofibers: Microstructure, reversible lithium storage property and mechanism

To ameliorate the lithium storage property of tin-based oxides, nano Sn-SnOx embedded in multichannel hollow carbon nanofibers (Sn-SnOx@MCNF) were identified in this work. Multichannel hollow carbon nanofibers embedded uniformly by amorphous SnOx and proper Sn nanocrystals with various valence states of Sn endowed Sn-SnOx@MCNF quick ion transfer rate, enough catalytic active sites, high structure stability, little agglomeration and superior buffering volume change during alloying/dealloying processes. Accordingly, Sn-SnOx@MCNF-based electrodes possessed predominant reversibility, large capacity and excellent rate capability during the process of lithium intercalation of SnOx to Li2O and LixSn. When applied in practice, the present Sn-SnOx@MCNF-based electrodes expressed a high reversible capacity of 669.2 mAh g−1 even after 600 cycles at 1.0 A g−1 and a high-rate capacity of 525.1 mAh g−1 at 4.0 A g−1. Sn-SnOx@MCNF will be a potential anode material for Li-ion batteries with superior Li-storage performance. The synergistic enhancement mechanism between MCNF and nano Sn-SnOx was proposed in detail.

CoN/MoC embedded in nitrogen-doped multi-channel carbon nanofibers as an efficient acidic and alkaline hydrogen evolution reaction electrocatalysts

Electrochemical water splitting has been extensively studied as a promising method for the production of clean and sustainable hydrogen fuels. However, the lack of low-cost and high-performance electrocatalysts for hydrogen evolution reaction (HER) has hindered their large-scale applications. Herein, one-dimensional (1D) CoN and MoC nanoparticles embedded in N-doped multi-channel carbon nanofibers (CoN/MoC/NMCNFs) are constructed by electrospinning technology coupled with carbonization process. The electronic structure of MoC is optimized by the interaction between CoN and MoC to improve the intrinsic activity of MoC. Owing to their excellent intrinsic activity, multi-channel structure, abundant active sites, and inhibitory effect of carbon on nanoparticles; CoN/MoC/NMCNFs exhibit excellent electrocatalytic performances in both acidic and alkaline environments, only 199.2 mV and 92.5 mV are respectively required to drive a current density of 10 mA cm−2. The average diameter and the specific surface areas of CoN/MoC/NMCNFs are 1.1 μm and 13.7 mg m−2, respectively. The catalytic activity of CoN/MoC/NMCNFs does not significantly change after 1000 and 2000 cycles of CV curve tests under alkaline and acid electrolysis conditions, respectively. This work provides a new idea for synthesis of simple, efficient, low-cost and non-Pt-based electrocatalysts.

Mixed-phase 1T/2H-WS2 nanosheets on N-doped multichannel carbon nanofiber as current collector-integrated electrode for potassium battery anode.

Potassium-ion batteries (PIBs) have attracted enormous attention due to the increasing lithium battery cost, but their development is still in the pre-mature stage due to the limited selection of electrodes. Herein, a free-standing current-collector-integrated electrode, composed of mixed-phase WS2 nanosheets with nitrogen-doped multichannel carbon nanofibers (N-MCNFs) membrane, is reported for high-performance potassium ion batteries anode. Benefiting the unique multichannel carbon nanostructure as a current collector-integrated electrode as well as mixed-phase lamellar structure WS2 for enhanced potassium ion entry, the 1T/2H-WS2/N-MCNFs hybrid current-collector-free anode delivers an outstanding areal capacity of 2.88 mAh cm-2 (corresponding to 411 mAh/g based on the mass of both electrode and current collector) at a current of 0.7mAcm-2 as well as long-term cycling stability for over 1000 cycles at a high current of 14mAcm-2, surpassing the current state-of-art PIB anode. It is believed that our findings based on the high energy current collector integrated electrode at high mass loading would boost future research on practical metal ion batteries.

Novel Insight into Rechargeable Aluminum Batteries with Promising Selenium Sulfide@Carbon Nanofibers Cathode.

Due to the unique electronic structure of Al3+ with strong Coulombic interaction and complex bonding situation (simultaneously covalent/ionic bonds), traditional electrodes, mismatching with the bonding orbital of Al3+ , usually exhibit slow kinetic process with inferior rechargeable aluminum batteries (RABs) performance. Herein, to break the confinement of the interaction mismatch between Al3+ and electrode, we potentially develop a previously unexplored Se2.9 S5.1 -based cathode with sufficient valence electronic energy overlap with Al3+ and easily accessible structure. Through this new strategy, Se2.9 S5.1 encapsulated in multichannel carbon nanofibers with free-standing structure exhibits a high capacity of 606 mAh g-1 at 50mA g-1 , fast kinetics (211 mAh g-1 at 2.0 A g-1 ), robust stability (187 mAh g-1 at 0.5 A g-1 after 3,000 cycles), and enhanced flexibility. Simultaneously, in/ex-situ characterizations also reveal the unexplored mechanism of Sex Sy in RABs. This article is protected by copyright. All rights reserved.

Atomically Dispersed V‐O2N3 Sites with Axial VO Coordination on Multichannel Carbon Nanofibers Achieving Superior Electrocatalytic Oxygen Evolution in Acidic Media

AbstractThe development of inexpensive, active, and robust nonprecious metal electrocatalysts toward the oxygen evolution reaction (OER) in acid media is highly imperative for renewable energy conversion techniques, yet greatly challenging. Inspired by the vanadium‐containing oxygen‐fixing enzymes in haloperoxidase in nature, herein, the atomically dispersed V sites anchored on N‐doped multichannel carbon nanofibers (designated as V@NMCNFs hereafter) are rationally designed as high‐efficiency electrocatalyst for the acidic OER. Substantial characterizations validate that the local coordination microenvironment of the V site is identified as an asymmetrical penta‐coordinated V‐O2N3 moiety with axial VO coordination, which is further theoretically substantiated as an energetically favorable configuration with a reduced OER energy barrier by the density functional theory calculations. Consequently, the well‐dispersed isolated V‐O2N3 sites with exceptional intrinsic activity and unique nano‐architecture furnish the well‐designed V@NMCNFs with distinguished OER performance in a 0.5 m H2SO4 electrolyte, as reflected by the ultralow overpotential of 196 mV at 10 mA cm−2 and remarkable long‐term electrochemical durability, representing one of the most impressive nonprecious OER electrocatalysts to date. The synthetic methodology for SAC preparation and concept of electronic regulation proposed in this work offer perspectives to aid the design of other functional SAC systems with regulated coordination environments for efficient electrocatalysis.

Realizing High-Performance Lithium Storage by Fabricating FeTiO3 Nanoparticle-Impregnated Multichannel Carbon Nanofibers with Promoted Reaction Kinetics.

In this paper, a free-standing film of ilmenite FeTiO3 nanoparticle-impregnated porous multichannel N-doped carbon nanofibers (NF-FTO) is fabricated via electrospinning technology. The as-prepared NF-FTO film is highly flexible and can be tailored to a suitable size to assemble into lithium-ion batteries. The introduction of a conductive N-doped carbon matrix is conducive to the improvement of intrinsic electronic conductivity and the acceleration of Li+ diffusion kinetics. The construction of the porous structure and highly parallel channels facilitates the transfer of electrolyte to FTO particles through the pores and shortens the transport path of lithium ions. Thus, the self-supporting electrode yields an initial charge capacity of 718.5 mAh g-1 at 50 mA g-1, a high-rate performance of 410.4 mAh g-1 at 3 A g-1, and an outstanding cycling performance with no capacity decay after 1500 cycles at 3 A g-1. By ex situ X-ray diffraction and transmission electron microscopy analysis, the reaction mechanism of NF-FTO is determined as a reversible conversion reaction. Furthermore, the assembled LiFePO4/NF-FTO full cell delivers an initial discharge capacity of 521 mAh g-1 and superb rate performance.

Hierarchical aerogels with hollow Co3O4 nanoparticles and graphitized carbon vesicles embedded in multi-channel carbon nanofibers for high-performance asymmetric supercapacitors

Low ionic diffusivity, sluggish charge transfer kinetics, and volume shrinkage/expansion during charging/discharging of transition metal oxides and conductive carrier materials seriously reduce capacity and damage cycle stability of electrodes. Herein, we demonstrate an in situ structural transformation strategy for fabricating hierarchical aerogels with hollow Co3O4 (H-Co3O4) nanoparticles embedded in multi-channel carbon nanofibers (MCNFs) by electrospinning polyacrylonitrile/polystyrene/metal organic framework mixtures, freeze-drying, carbonization and oxidation. The positive electrode prepared with MCNF@H-Co3O4 aerogel as the active material exhibits high specific capacity of 244.5 mA h g−1 (1600.6 F g−1) at 1 A g−1, and ultra-long cycle life of retaining 90.5 % of its initial specific capacity after 30,000 cycles at 20 A g−1. Furthermore, N and O co-doped hollow MCNF (NO-HMCNF) aerogels with hollow carbon vesicles embedded in the MCNFs are also prepared by acid-etching. The negative electrode prepared with the NO-HMCNF aerogel as the active material exhibits a high specific capacitance of 362.5 F g−1 at 0.3 A g−1, and retains 95.5 % of its initial specific capacitance after 30,000 cycles at 5 A g−1. The assembled MCNF@H-Co3O4//NO-HMCNF asymmetric supercapacitor provides a high energy density of 51.9 W h kg−1 (750.3 W kg−1) and retains 90.1 % of its initial specific capacity after 5000 cycles at 5 A g−1. The “double-void” structure plays crucial roles in exposing active sites and accommodating volume changes for enhancing capacity and cycling of the electrodes.

Construction of N-doped multichannel carbon nanofibers embedded with amorphous VS4 nanoparticles for potassium-ion batteries with ultralong-term cycling stability

Due to the low cost of potassium and its low redox potential, potassium ion batteries (KIBs) have been touted as viable candidates for large-scale energy storage devices. However, practical application of KIBs remains challenging due to a lack of suitable electrode materials capable of effectively storing large-sized K ions. The present article describes the successful preparation of a highly stable one-dimensional VS4/carbon composite comprising VS4 nanoparticles confined within N-doped multichannel carbon nanofibers (VS@NMCNF), using an electrospinning method followed by in-situ pyrolysis sulfidation, for use in KIBs. The porous structure of the carbon nanofiber is critical in allowing vanadium sulfide to have an amorphous crystal structure. Benefiting from the fast ion/electron transport, the amorphous nature of vanadium sulfide, and the structural robustness of the carbon matrix, the VS@NMCNF electrode exhibits a high reversible capacity (∼404.6 mAhg−1 at 0.5 A g−1), superior cycling stability for 4000 cycles, and an excellent rate capability (284.8 mAhg−1 at 2.0 A g−1). Additionally, the K-ion full cell composed of VS@NMCNF//Prussian blue demonstrates stable reversible capacity (233.1 mAhg−1 at 0.1 A g−1) and a high-rate capability (187.9 mAhg−1 at 2.0 A g−1).

FeS2 Nanoparticles Encapsulated in S/N Co-Doped Carbon Nanofibers With a Three-Dimensional Multi-Channel Structure for Lithium-Ion Batteries.

Pyrite (FeS2) is one of the potential candidates for advanced rechargeable Li-ion batteries (LIBs) owing to its inherent capacity (849 mAh g-1), environmental friendliness, and abundant natural resources. However, the volume expansion of FeS2 and the dissolution of polysulfide in the electrochemical reaction severely limit its application in the field of energy conversion and storage. Herein, FeS2 nanoparticles are encapsulated in S/N co-doped three-dimensional multi-channel structural carbon nanofibers (FeS2@CNFs) through the electrospinning method. As a cathode material for LIBs, FeS2@CNFs demonstrated excellent rate property and cyclic stability. The 3FeS2@CNFs (weight ratio of FeS2 is 30%) present the initial capacity of 1,336.7mAh g-1 and the remaining 856.5 mAh g-1 at 0.02Ag-1 after 100 circles. The favorable electrochemical properties have confirmed that carbon nanofibers can enhance the electroconductivity of electrodes, reduce the volume collapse of FeS2, and remit the dissolution of polysulfide during the Li+ ions insertion/de-insertion process. In addition, co-doped S/N can supply abundant active sites for electrochemical reactions, providing enough space for Li+ ion storage. The results indicate that 3FeS2@CNFs is a cathode with a developmental prospect for LIBs.

Encapsulating ultrafine cobalt sulfides into multichannel carbon nanofibers for superior Li-ion energy storage

Developing high-capacity anode materials based on metal sulfides is of great importance for building advanced lithium-ion batteries (LIBs). Herein, we demonstrate rational encapsulation of cobalt sulfide (CoSx) nanoparticles into multichannel carbon nanofibers (CoSx/MCF) with substantially improved Li+ reactivity and durability. The unique multichannel and conductive carbon scaffold not only affords boosted electron/Li + transportation pathways for fast redox reaction with CoSx, but also stabilizes the electrode structure by buffering the volume change of CoSx. Impressively, the CoSx/MCF composite could serve as flexible anodes to deliver a high reversible capacity of 737 mAh g−1 at 0.2 A g−1 after 100 cycles, superior rate capacity of 374 mAh g−1 at 5 A g−1, and excellent operating stability over 1000 cycles. Practical feasibility is also demonstrated by a full cell based on the high-capacity CoSx/MCF anode and Li[Ni0.8Co0.1Mn0.1]O2 cathode. The present study may provide insights for the facile synthesis of advanced anode materials for high-performance LIBs.

Chemically Binding Vanadium Sulfide in Carbon Carriers to Boost Reaction Kinetics for Potassium Storage.

Potassium-ion batteries (PIBs) have received widespread interest on account of low redox potential, low price, and high abundance of potassium. However, attributing to the large radius of K+ ions, the structure of electrode material is easily damaged during the potassiation/depotassiation process. Herein, the unique chemical bonding of encapsulating V5.45S8 nanoparticles in N,S codoped multichannel carbon nanofibers (CB-VS@NSCNFs) is designed through electrospinning and in situ vulcanization techniques. The anchoring effect (V-C chemical bonding) of the V5.45S8 nanoparticles with carbon carriers assists in shortening the K+/e- transport path and alleviating the structural changes, which is highlighted to acquire a stable cycle lifespan. Also, codoped multichannel carbon nanofibers provide abundant active sites for pseudocapacitive behavior to achieve fast kinetics. As a synergistic result, when CB-VS@NSCNFs are evaluated as anode material for PIBs, they exhibit a high reversible capacity of 411 mA h g-1 at 0.1 A g-1, decent rate property with a capacity of up to 123 mA h g-1 at 6 A g-1, and good cycling stability of 500 cycles at 1 A g-1.