Highly stable Fe2O3@SnO2@HNCS hollow nanospheres with enhanced lithium-ion battery performance

Dang, Liyun; Li, Jinghao; Yang, Yaping; Xue, Fu‐Shan; Hu, Jingyu; Zhang, Shuaiguo; Gao, Yuan; Liu, Mengjiao; Zhao, Jin’an

doi:10.1039/d2nj05799a

Cited by 4 publications

(3 citation statements)

References 54 publications

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“…The massive consumption of fossil fuels has caused severe environmental pollution problems and an energy crisis, which necessitate the search for renewable alternatives to alleviate the current situation. − Among the various renewable energy devices, lithium-ion batteries (LIBs) have played a significant role in the field of portable electronic devices over the past decades and are now also extensively used for vehicle applications. − However, the overall performance is still far less appealing compared with the increasing requirement for industrial requirements. Graphite has been commercialized as an anode material in LiBs, but the relatively low theoretical capacity (372 mAh g –1 ) leads to a relatively low energy density of the battery. − Therefore, the investigation of anode materials with a relatively higher theoretical capacity to increase the energy density and prolong the service time is significant for the practical application of LIBs. − …”

Section: Introductionmentioning

confidence: 99%

Longan-Derived Biomass Carbon-Induced Cubic-Type Ferric Oxide Nanoparticles for Efficient Lithium-Ion Battery Anodes

Liu,

Yang

et al. 2023

Energy Fuels

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Lithium-ion batteries (LIBs) are the most preferred alternatives to fossil fuels as energy providers, but further improvement of the overall performance is still desired to satisfy social requirements. In this work, ferric oxide nanoparticles encapsulated in biomass longan pulp-derived carbon are simply configurated, in which the longan pulp plays three main functions: (i) To ensure a nanorod-like structure when interacting with Fe 3+ ; (ii) to construct a cubic phase of Fe 2 O 3 by tuning the proper content of longan pulp; and (iii) to ensure good dispersion of Fe 2 O 3 nanoparticles. As electrodes for LIBs, the novel composite shows a high initial discharge capacity of 1483.6 mAh g −1 at 0.1 A g −1 and maintains a capacity value of 626.6 mAh g −1 even at 1.0 A g −1 over 1000 cycles, which benefits from the synergistic effect between carbon nanorods and Fe 2 O 3 . The highly dispersed γ-phase cubic Fe 2 O 3 nanoparticles anchoring on the carbon substrate can increase the contact between the electrolyte and active materials; meanwhile, the longan-derived carbon substrate can compensate for the unfavorable electrical conductivity of Fe 2 O 3 and buffer the volume expansion in the cycling process. This study provides an effective technique to utilize extensive natural resources and simple synthesis procedures for the preparation of novel hybrid anode materials.

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Section: Introductionmentioning

confidence: 99%

Longan-Derived Biomass Carbon-Induced Cubic-Type Ferric Oxide Nanoparticles for Efficient Lithium-Ion Battery Anodes

Liu,

Yang

et al. 2023

Energy Fuels

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“…When b = 0.5, the battery capacity corresponds to the contribution of the diffusion-controlled process, while b = 1 corresponds to the capacitive-controlled process. , The value of b is 0.78 (Figure d), fitted by the linear relationship between log( i ) – log( v ), which indicates that the diffusion-capacitive coupling controls the Li-storage process of the Si@NC/MXene-2 electrode. In addition, the specific capacity contribution can be calculated according to the following equation , : i = k 1 v + k 2 v 1 / 2 …”

Section: Resultsmentioning

confidence: 99%

“…55,56 The value of b is 0.78 (Figure 5d), fitted by the linear relationship between log(i) − log(v), which indicates that the diffusioncapacitive coupling controls the Li-storage process of the Si@ NC/MXene-2 electrode. In addition, the specific capacity contribution can be calculated according to the following equation 57,58 :…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Rigid-Flexible Coupling Modification Strategy Realized by Combining MXene with C-Coated Microsilicon for Long-Life Li-Ion Battery

Lin,

Liu,

Peng

et al. 2024

ACS Appl. Energy Mater.

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Compared with nanosilicon, microsilicon with high capacity is the best candidate for high-energy-density lithium-ion batteries due to its lower cost and fewer interfacial side reactions. However, particle cracking and even pulverization caused by the huge volume expansion and low ionic conductivity of microsilicon seriously hinder its large-scale application. Here, we prepared a rigid-flexible coupled modification layer for microsilicon flakes (Si) by using polydopamine (PDA) as a bridging agent and MXene (Ti 3 C 2 T x ) as a buffer layer. The hydrogen bonds between groups on PDA and the terminal groups (−OH, etc.) on Si and MXene surfaces can induce the uniform distribution of Si particles on the surface of the MXene, which inhibits the agglomeration of Si particles and the self-accumulation of MXene nanosheets. In addition, the rigid N-doped carbon (NC) layer derived from the high-temperature cracking of PDA coated on the Si surface and the flexible MXene buffer layer synergistically form a hierarchical multiplex conductive network, which not only accelerates the kinetics of the electrode during cycling and suppresses particle cracking but also effectively protects the electrode from the destruction of the decomposition byproducts. As a result, this NC-coated Si uniformly supported on MXene (Si@NC/MXene-2) delivers highly reversible specific capacities of 1066.1 mAh g −1 after 250 cycles at 0.5 A g −1 and 810.9 mAh g −1 after 650 cycles even at a higher current density of 1 A g −1 . This work provides valuable insights for the development of advanced silicon-based anode materials for application in high-energy-density lithium-ion batteries.

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Cobalt Oxide Arrays Anchored to Copper Foam as Efficient Binder‐free Anode for Lithium Ion Batteries

Liu

et al. 2023

ChemPhysChem

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The development of lithium‐ion batteries with simplified assembling steps and fast charge capability is crucial for current battery applications. In this study, we propose a simple in‐situ strategy for the construction of high‐dispersive cobalt oxide (CoO) nanoneedle arrays, which grow vertically on a copper foam substrate. It is demonstrated that this nanoneedle CoO electrodes provide abundant electrochemical surface area. The resulting CoO arrays directly act as binder‐free anodes in lithium‐ion batteries with the copper foam functioning as the current collector. The highly‐dispersed feature of the nanoneedle arrays enhances the effectiveness of active materials, leading to outstanding rate capability and superior long‐term cycling stability. These impressive electrochemical properties are attributed to the highly‐dispersed self‐standing nanoarrays, the advantages of binder‐free constituent, and the high exposed surface area of the copper foam substrate compared to copper foil, which enrich active surface area and facilitate charge transfer. The proposed approach to prepare binder‐free lithium‐ion battery anodes streamlines the electrode fabrication steps and holds significant promise for the future development of the battery industry.

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Highly stable Fe₂O₃@SnO₂@HNCS hollow nanospheres with enhanced lithium-ion battery performance

Abstract: Hollow Fe2O3@SnO2@HNCS nanospheres recombined the merits of the synergistic effect of metal oxides, rigid hollow structure and highly conductive N-doping.

Cited by 4 publications

References 54 publications

Longan-Derived Biomass Carbon-Induced Cubic-Type Ferric Oxide Nanoparticles for Efficient Lithium-Ion Battery Anodes

Longan-Derived Biomass Carbon-Induced Cubic-Type Ferric Oxide Nanoparticles for Efficient Lithium-Ion Battery Anodes

Rigid-Flexible Coupling Modification Strategy Realized by Combining MXene with C-Coated Microsilicon for Long-Life Li-Ion Battery

Cobalt Oxide Arrays Anchored to Copper Foam as Efficient Binder‐free Anode for Lithium Ion Batteries

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