2D ultrathin carbon nanosheets with rich N/O content constructed by stripping bulk chitin for high-performance sodium ion batteries

Gao, Lingfeng; Ma, Junrong; Li, Shuping; Liu, Dajin; Xu, Dingfeng; Cai, Jie; Chen, Lingyun; Xie, Jia; Zhang, Lina

doi:10.1039/c9nr02277e

Cited by 56 publications

(45 citation statements)

References 68 publications

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“…Meanwhile, the O 1s spectra (Figure S3) can be fitted into a dominated component for C=O, C−O, COOH. Except for the contribution to accelerating the capacitive processes, the considerable oxygen content is helpful to the wettability of electrode materials in electrolyte …”

Section: Resultsmentioning

confidence: 99%

“…The higher capacity of NC/NF‐800 is contributed to its more abundant active sites (N‐5 and N‐6), expanded interlayer spacing (N‐5), which could improve the Na + storage capacity both at the carbon surface and in the graphene‐like interlayers. In addition, the initial Coulombic efficiency (CE) is also a significant parameter for evaluating the practical application of electrodes . The NC/NF‐800 exhibited an initial CE of 63.1 %, higher than that of NC/NF‐700 (60.2 %), NC/NF‐900 (56.1 %), and C/NF‐800 (46.4 %), which is attributed to the more reversible active sites induced by N‐5 and N‐6 configurations for NC/NF‐800 electrode.…”

Section: Resultsmentioning

confidence: 99%

“…Except for the contribution to accelerating the capacitive processes, the considerable oxygen content is helpful to the wettability of electrode materials in electrolyte. [18] Figure 3g~i displays the N 1s high resolution XPS spectrum of NC/NF-700, NC/NF-800, and NC/NF-900. The N 1s region of all samples can be deconvoluted into four components at around 398.2, 399.6, 400.3, and 403.7 eV, assigning to pyridinicnitrogen (N-6), pyrrolic-nitrogen (N-5), quaternary-nitrogen (NÀ Q), and oxidized-nitrogen (NÀ O), respectively.…”

Section: Structure Characterizationmentioning

confidence: 99%

“…To enhance the electrochemical performance of carbonaceous anodes, some strategies have been proposed, such as nanostructure construction, designing special morphologies, and hierarchical porosity . Besides, doping heteroatoms (e. g. N, S, B, P, O) into carbonaceous materials has been recognized as a highly effective mean, which could improve electronic conductivity and expand the carbon interlayer distance for more efficient Na + storage .…”

Section: Introductionmentioning

confidence: 99%

“…[15] Considering the fluctuation and intermittence of renewable energy and the economic feasibility of large-scale energy storage system, the crucial issue for SIBs is to develop carbonaceous anodes with high reversible capacity, long cycling life and stability, along with the excellent rate capability. [16] To enhance the electrochemical performance of carbonaceous anodes, some strategies have been proposed, such as nanostructure construction, [17] designing special morphologies, [18] and hierarchical porosity. [19] Besides, doping heteroatoms (e. g. N, S, B, P, O) into carbonaceous materials has been recognized as a highly effective mean, which could improve electronic conductivity and expand the carbon interlayer distance for more efficient Na + storage.…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen‐Doped Hard Carbon on Nickel Foam as Free‐Standing Anodes for High‐Performance Sodium‐Ion Batteries

Huang

et al. 2019

ChemElectroChem

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Nitrogen‐doped hard carbon on Ni foam (NC/NF) with numerous active sites, expanded interlayer distance (0.49 nm), and highly ordered pseudo‐graphic structure is synthesized by a melamine‐assisted hydrothermal pretreatment and subsequent pyrolysis procedure. The high content configurations of pyrrolic‐nitrogen and pyridinic‐nitrogen in NC/NF could provide abundant active sites and defects for efficient Na+ adsorption/desorption and improved transport kinetics. The obvious flocculent structures on carbon surface, corresponding to the highly ordered pseudo‐graphic structure, could enhance the transport kinetics for electrons. The strong electrostatic repulsion of pyrrolic‐nitrogen could expand interlayer distance, facilitating Na+ insertion/extraction process. The balance between high nitrogen content and sufficient graphitization degree comes into strong carbon frameworks with enhanced structural stability and electronic conductivity. When served as free‐standing anodes for sodium‐ion batteries (SIBs), NC/NF presents high rate capability of 128.5 mAh g−1 at 10 A g−1, and excellent cycling stability of 225.4 mAh g−1 after 1000 cycles under high current density of 5 A g−1. These results demonstrate a new light to prepare advanced anodes for SIBs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Structure Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nitrogen‐Doped Hard Carbon on Nickel Foam as Free‐Standing Anodes for High‐Performance Sodium‐Ion Batteries

Huang

et al. 2019

ChemElectroChem

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Biomass‐Derived Carbon for High‐Performance Batteries: From Structure to Properties

Sun

Shi

Yang

et al. 2022

Adv Funct Materials

105

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Owing to the sustainability, environmental friendliness, and structural diversity of biomass-derived materials, extensive efforts have been devoted to use them as energy storage materials in high-energy rechargeable batteries. A timely and comprehensive review from the structures to mechanisms will significantly widen this research field. Here, it starts with the operation mechanism of batteries, and it aims to summarize the latest advances for biomass-derived carbon to achieve high-energy battery materials, including activation carbon methods and the structural classification of biomass-derived carbon materials from zero dimension, one dimension, two dimension, and three dimension. Each strategy starts with carefully selected examples and then moves to illustrate the underlying transport mechanism of electrons in the structure. In the end, challenges, strategies, and outlooks are pointed out for the future development of biomass-derived carbon materials. Overall, this review will help researchers choose appropriate strategies to design biomass-derived carbon materials, thereby promoting the application of biomass materials in battery design.

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Nanochitin and Nanochitosan: Chitin Nanostructure Engineering with Multiscale Properties for Biomedical and Environmental Applications

et al. 2022

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Nanochitin and nanochitosan (with random‐copolymer‐based multiscale architectures of glucosamine and N‐acetylglucosamine units) have recently attracted immense attention for the development of green, sustainable, and advanced functional materials. Nanochitin and nanochitosan are multiscale materials from small oligomers, rod‐shaped nanocrystals, longer nanofibers, to hierarchical assemblies of nanofibers. Various physical properties of chitin and chitosan depend on their molecular‐ and nanostructures; translational research has utilized them for a wide range of applications (biomedical, industrial, environmental, and so on). Instead of reviewing the entire extensive literature on chitin and chitosan, here, recent developments in multiscale‐dependent material properties and their applications are highlighted; immune, medical, reinforcing, adhesive, green electrochemical materials, biological scaffolds, and sustainable food packaging are discussed considering the size, shape, and assembly of chitin nanostructures. In summary, new perspectives for the development of sustainable advanced functional materials based on nanochitin and nanochitosan by understanding and engineering their multiscale properties are described.

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2D ultrathin carbon nanosheets with rich N/O content constructed by stripping bulk chitin for high-performance sodium ion batteries

Abstract: The layered structure assisted efficient production of 2D carbon nanosheets from natural chitin is reported, demonstrating excellent performance in sodium storage.

Cited by 56 publications

References 68 publications

Nitrogen‐Doped Hard Carbon on Nickel Foam as Free‐Standing Anodes for High‐Performance Sodium‐Ion Batteries

Nitrogen‐Doped Hard Carbon on Nickel Foam as Free‐Standing Anodes for High‐Performance Sodium‐Ion Batteries

Biomass‐Derived Carbon for High‐Performance Batteries: From Structure to Properties

Nanochitin and Nanochitosan: Chitin Nanostructure Engineering with Multiscale Properties for Biomedical and Environmental Applications

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