Correlation between the morphology of carbon nanofibers and the transport characteristics of Li-ions in a battery anode under fast charging conditions

Cho, Hang In; Lee, S.H.; Shin, Min Ho; Park, Chong Rae

doi:10.1016/j.carbon.2023.118247

Cited by 7 publications

(2 citation statements)

References 56 publications

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“…Moreover, different graphitization degrees, lengths, and porosities of one-dimensional carbon nanomaterials can affect the electronic/ionic transport and structural stability in a very different way, which would exert a significant impact on the specific capacity and cycling stability of the anodes. 14 Therefore, it is very necessary to construct a new type of one-dimensional nanocarbon with good electronic conductivity, short longitudinal length, and high porosity to increase the electrochemical activity. The highly graphitic and porous carbon nanorod possessing robust short electrolyte diffusion channels, high electronic conductivity, and sufficient confinement space is highly desired for fabricating efficient anode material.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Nevertheless, embedding metal oxide NPs in the outer wall and hollow tube of NCNT can be achieved by in situ metal-catalyzed CNT growth and the followed air oxidization process, which can enlarge the mass ratio of active component, increase the amount of intercalated Li + , and optimize electrochemical activity. Moreover, different graphitization degrees, lengths, and porosities of one-dimensional carbon nanomaterials can affect the electronic/ionic transport and structural stability in a very different way, which would exert a significant impact on the specific capacity and cycling stability of the anodes . Therefore, it is very necessary to construct a new type of one-dimensional nanocarbon with good electronic conductivity, short longitudinal length, and high porosity to increase the electrochemical activity.…”

Section: Introductionmentioning

confidence: 99%

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Self-Catalyzed Synthesis of Length-Controlled One-Dimensional Nickel Oxide@N-Doped Porous Carbon Nanostructures from Metal Ion Modified Nitrogen Heterocycles for Efficient Lithium Storage

Chen,

Zhao,

Liu

et al. 2024

Langmuir

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Transition metal oxides with the merits of high theoretical capacities, natural abundance, low cost, and environmental benignity have been regarded as a promising anodic material for lithium ion batteries (LIBs). However, the severe volume expansion upon cycling and poor conductivity limit their cycling stability and rate capability. To address this issue, NiO embedded and N-doped porous carbon nanorods (NiO@NCNR) and nanotubes (NiO@NCNT) are synthesized by the metalcatalyzed graphitization and nitridization of monocrystalline Ni(II)-triazole coordinated framework and Ni(II)/melamine mixture, respectively, and the following oxidation in air. When applied as an anodic material for LIBs, the NiO@NCNR and NiO@NCNT hybrids exhibit a decent capacity of 895/832 mA h g −1 at 100 mA g −1 , high rate capability of 484/467 mA h g −1 at 5.0 A g −1 , and good long-term cycling stability of 663/634 mA h g −1 at 600th cycle at 1 A g −1 , which are much better than those of NiO@carbon black (CB) control sample (701, 214, and 223 mA h g −1 ). The remarkable electrochemical properties benefit from the advanced nanoarchitecture of NiO@NCNR and NiO@NCNT, which offers a length-controlled one-dimensional porous carbon nanoarchitecture for effective e − /Li + transport, affords a flexible carbon skeleton for spatial confinement, and forms abundant nanocavities for stress buffering and structure reinforcement during discharge/charging processes. The rational structural design and synthesis may pave a way for exploring advanced metal oxide based anodic materials for next-generation LIBs.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self-Catalyzed Synthesis of Length-Controlled One-Dimensional Nickel Oxide@N-Doped Porous Carbon Nanostructures from Metal Ion Modified Nitrogen Heterocycles for Efficient Lithium Storage

Chen,

Zhao,

Liu

et al. 2024

Langmuir

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N, P Co‐Doped Hard Carbon Anodes for High‐Performance Lithium‐Ion Batteries with Enhanced Capacity Retention and Cycle Stability

Zheng,

Wu,

Zhao

et al. 2024

Chemistry An Asian Journal

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Compared to the traditional graphite anode, heteroatom‐doped polymer carbon materials have high capacity retention due to their high porosity and porous structure. Therefore, they have great potential for application in lithium‐ion battery (LIB) anodes. In this work, an N, P co‐doped precursor polymer material (MBPp), synthesized via a one‐pot method using bisphenol‐A (C‐source), melamine (N‐source), and 9,10‐Dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (P‐source). The resulting N, P‐co‐doped hard carbon materials (MBPs) were prepared at various pyrolysis temperatures, yielding microporous, mesoporous, and macroporous structures. MBP materials demonstrated excellent electrochemical performance as LIB anodes. Notably, MBP‐900 achieved a reversible capacity of 262 mAh g‐1 at 1000 mA g‐1 (in 0.005‐2.0 V voltage range) with a capacity retention rate of 97.2% after 1000 cycles. These findings highlight the significance of MBP materials, which possess numerous defects, large layer gaps, and excellent cycle stability, in advancing the development of polymer anode materials for LIBs.

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Elucidating the Chemical Pre‐Lithiation Mechanism of Hard Carbon Anodes for Ultra‐high Stability Lithium‐Ion Batteries

Li,

Yuan,

Jin

et al. 2024

Small

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The hard carbon (HC) anode materials demonstrate high capacity and excellent rate performance in lithium‐ion batteries. However, HC anodes suffer from excessive loss of Li+ ions during the formation of the solid electrolyte interphase (SEI) film, leading to poor cycling stability, which hinders their large‐scale applications. Herein, a facile pre‐lithiation strategy is proposed to achieve multi‐functional precompensation of carbon nanofibers (CNFs) anodes. Both experimental and density functional theory (DFT) calculation results revealed that the strategy compensated for the loss of Li+ ions and reacted with four structures of CNFs during pre‐lithiation, including tiny graphite domains, CO‐containing functional groups, defects, and micropores. Furthermore, the lithium in pre‐lithiated carbon nanofibers (pCNFs) existed in various forms, consisting of LiC24 and LiC18, Li─O─C, quasi‐metallic lithium, and Li+ ions. Moreover, the uniformly distributed lithium on the surface of pCNFs induced the formation of denser and more robust LiF/Li2CO3‐rich SEI film, which promoted Li+ ions transport. As a result, pCNFs showed more stable cycling performance (369.8 mAh g−1, almost no decay for 1500 cycles). This work provides deeper insight into chemical pre‐lithiation and offers a simple and mild strategy for highly stable batteries.

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Correlation between the morphology of carbon nanofibers and the transport characteristics of Li-ions in a battery anode under fast charging conditions

Cited by 7 publications

References 56 publications

Self-Catalyzed Synthesis of Length-Controlled One-Dimensional Nickel Oxide@N-Doped Porous Carbon Nanostructures from Metal Ion Modified Nitrogen Heterocycles for Efficient Lithium Storage

Self-Catalyzed Synthesis of Length-Controlled One-Dimensional Nickel Oxide@N-Doped Porous Carbon Nanostructures from Metal Ion Modified Nitrogen Heterocycles for Efficient Lithium Storage

N, P Co‐Doped Hard Carbon Anodes for High‐Performance Lithium‐Ion Batteries with Enhanced Capacity Retention and Cycle Stability

Elucidating the Chemical Pre‐Lithiation Mechanism of Hard Carbon Anodes for Ultra‐high Stability Lithium‐Ion Batteries

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