In situ self-nucleophilic synthesis of nano-Li4Ti5O12/reduced graphite oxide composite with mesopore-oriented porous structure for high-rate lithium ion batteries

Pan, Feng-ling; Ming, Hai; Cao, Gaoping; Zhang, Tingting; Zhang, Wenfeng; Xiang, Yu

doi:10.1007/s11771-022-5143-1

Cited by 4 publications

(3 citation statements)

References 46 publications

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“…Synergistic effects of a double-carbon layer from gelatin-derived carbon and reduced graphene oxide (rGO) in Na 3 V(PO 4 ) 3 -Na 3-Fe 2 (PO 4 )(P 2 O 7 ) composite [24] and a double-layer coating strategy in a Si@SiO x @C-NB anode resulted in a superior rate capability of 690 mAh g −1 at 5 A g −1 [25]. O-containing groups from ball-milling of graphite oxide (GO) assisted in the in situ growth of LTO nanoparticles in nano-Li 4 Ti 5 O 12 /reduced graphite oxide composite [26]. Similar to Si, manganese-based chalcogenides with innately low electronic conductivity demonstrated a notable capacity of 1,039 mAh g −1 over 100 cycles when electrostatically embedded in N-doped graphene (N-G) [27].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Electrochemical Performance of Hydroxyl-Functionalized Graphene Quantum Dot-Coated Si Nanoparticles/Reduced Graphene Hybrid Anodes for Advanced Li-Ion Batteries

Martino

Cong

et al. 2023

Journal of Nanomaterials

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By powering sophisticated lithium-ion batteries (LIBs), silicon/carbon (Si/C) composites have the potential to accelerate the sustainable energy transition. This is a first-of-its-kind Si/C hybrid with hydroxyl-functionalized graphene quantum dots (OH-GQD) electrostatically assembled within interconnected reduced graphene oxide networks (OH-GQD@Si/rGO) prepared through solution-phase ultrasonication and subsequent one-step, low-temperature annealing and thermal reduction. The OH-GQD@Si/rGO hybrid utilized as the LIB anode delivered a high initial specific capacity of 2,229.16, 1,303.21, and 1,090.13 mAh g−1 reversible capacities at 100 mA g−1 after 50 and 100 cycles, and recovered 1,473.28 mAh g−1 at rates as high as 5 A g−1. The synergistic benefits of the OH-GQD/rGO interface give dual, conductive carbon protection to silicon nanoparticles. Consecutive Si surface modifications improved Si–rGO contact modes. The initial OH-GQD carbon coating increased storage capacity through vacancy defects changing the electron density in the lattice, whereas hydroxyl functionality at the edges acted as active storage sites. Secondary protection through rGO encapsulation improved Si conductivity and usage by providing continuous electron/ion routes while minimizing Si volume variations. The proposed OH-GQD/rGO hybridization as a dual-carbon protection strategy to Si stabilized the solid electrolyte interface leading to electrode stability. This work is expected to advance the development of next-generation Si-based LIB anodes.

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Section: Introductionmentioning

confidence: 99%

Characteristics and Electrochemical Performance of Hydroxyl-Functionalized Graphene Quantum Dot-Coated Si Nanoparticles/Reduced Graphene Hybrid Anodes for Advanced Li-Ion Batteries

Martino

Cong

et al. 2023

Journal of Nanomaterials

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“…In the constant current charge-discharge test of 1.0-2.5 V, the new LTO(Li4Ti5O12)/biphasic TiO2 nanosheet nanosheet prepared by simple and effective hydrothermal method showed a reversible capacity of 174 mAh/g at 0.5 C, and the capacity was slightly attenuated after running for 30 cycles at 30°C, showing a high stability level. In this preparation process, it should be noted that the molar ratio of Li:Ti is controlled at 4:5 and the temperature is controlled at 600 °C, which is enough to synthesize pure phase Li4Ti5O12 [8]. Compared with LTO/single-phase TiO2, the rate performance of LTO/duplex TiO2 was significantly enhanced after the introduction of rutile TiO2, according to the experimental results, when the cycle current density returned to 0.5C, the sample LTO/duplex TiO2 completely recovered its initial reversible capacity, indicating that the prepared LTO/duplex TiO2 nanosheets had good electrochemical stability.…”

Section: Li4ti5o12/biphase Tio2mentioning

confidence: 99%

How new nanomaterials can improve the performance of lithium batteries

2024

J. Phys.: Conf. Ser.

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In recent years, lithium batteries have become energy storage methods in many fields for their advantages of high energy density, and many fields such as civil electric vehicles, electronic products, and aerospace rely on lithium batteries. At present, the performance demand for lithium batteries in electric vehicles is increasing, and finding ways to improve the performance of lithium batteries has become a top priority. Since silicon has the highest theoretical specific capacity, carbon nanotube technology is relatively mature, and the research and development prospects of new negative electrode materials for nano-batteries are broad. This paper analyzes the different influences of nano-silicon-based materials, carbon nanotubes modified by new materials and new negative nano-lithium materials on lithium batteries from nanomaterials. And summarize their respective roles to help readers further understand the application of nanomaterials in lithium batteries. It is designed to help readers further understand the application of nanomaterials in lithium batteries.

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“…This is because the high specific surface area of carbon materials affords remarkable advantages for cathode materials by mitigating volumetric changes, the efficient infiltration of electrolytes, and the shortening ion diffusion distance. Furthermore, the excellent electronic conductivity of carbon materials enhances the electrical conductivity of electrode materials. ,,− In this sense, Liu et al reported hydrothermally synthesized α-MnO 2 /CNTs nanocomposites with a cross-linked network structure and employed the prepared nanocomposite as the cathode for zinc-ion batteries. The resultant electrode delivered an impressive capacity of 116 mAh·g –1 at 2 A·g –1 after 2000 cycles .…”

Section: Introductionmentioning

confidence: 99%

Nanostructure Design of MnO₂/Partially Oxidized Graphene Nanocomposite Cathode via One-Step Pulse Potential Strategy: Toward Ultralong-Life Zinc-Ion Batteries

Saadi-motaallegh,

Javanbakht,

Omidvar

et al. 2023

ACS Appl. Eng. Mater.

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MnO2 has garnered significant interest as a cathode material for aqueous zinc-ion batteries (ZIBs) owing to its cost-effectiveness and abundance of manganese. Nevertheless, its practical application is hindered by significant volume changes during charge/discharge processes, along with its intrinsic poor conductivity. In this study, we have designed a nanocomposite structure by concurrently synthesizing MnO2 and electrochemically unzipping multiwalled carbon nanotubes (MWCNTs) into partially oxidized graphene nanosheets using a one-step pulse potential electrodeposition method. This in-situ generated MnO2/partially oxidized graphene nanostructure, employed as a cathode material in ZIBs, displays an impressive reversible capacity of 314.7 mA h g–1 at a rate of 0.1 A g–1, along with outstanding capacity retention of 94.2% after 3000 cycles at 2 A g–1. The remarkable electrochemical performance can be ascribed to the improved electronic conductivity, remarkable structural stability, and substantial surface area of the electrode. Consequently, our study introduces a promising strategy for fabricating high-performance and long-lasting cathodes for ZIBs.

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In situ self-nucleophilic synthesis of nano-Li4Ti5O12/reduced graphite oxide composite with mesopore-oriented porous structure for high-rate lithium ion batteries

Cited by 4 publications

References 46 publications

Characteristics and Electrochemical Performance of Hydroxyl-Functionalized Graphene Quantum Dot-Coated Si Nanoparticles/Reduced Graphene Hybrid Anodes for Advanced Li-Ion Batteries

Characteristics and Electrochemical Performance of Hydroxyl-Functionalized Graphene Quantum Dot-Coated Si Nanoparticles/Reduced Graphene Hybrid Anodes for Advanced Li-Ion Batteries

How new nanomaterials can improve the performance of lithium batteries

Nanostructure Design of MnO₂/Partially Oxidized Graphene Nanocomposite Cathode via One-Step Pulse Potential Strategy: Toward Ultralong-Life Zinc-Ion Batteries

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In situ self-nucleophilic synthesis of nano-Li4Ti5O12/reduced graphite oxide composite with mesopore-oriented porous structure for high-rate lithium ion batteries

Cited by 4 publications

References 46 publications

Characteristics and Electrochemical Performance of Hydroxyl-Functionalized Graphene Quantum Dot-Coated Si Nanoparticles/Reduced Graphene Hybrid Anodes for Advanced Li-Ion Batteries

Characteristics and Electrochemical Performance of Hydroxyl-Functionalized Graphene Quantum Dot-Coated Si Nanoparticles/Reduced Graphene Hybrid Anodes for Advanced Li-Ion Batteries

How new nanomaterials can improve the performance of lithium batteries

Nanostructure Design of MnO2/Partially Oxidized Graphene Nanocomposite Cathode via One-Step Pulse Potential Strategy: Toward Ultralong-Life Zinc-Ion Batteries

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Nanostructure Design of MnO₂/Partially Oxidized Graphene Nanocomposite Cathode via One-Step Pulse Potential Strategy: Toward Ultralong-Life Zinc-Ion Batteries