Preparation and lithium storage performances of g-C3N4/Si nanocomposites as anode materials for lithium-ion battery

Bian, Zhengxu; Tang, Zehua; Xie, Jing; Zhang, Junhao; Guo, Xingmei; Liu, Yuanjun; Yuan, Aihua; Zhang, Feng; Kong, Qinghong

doi:10.1007/s11708-020-0810-0

Cited by 9 publications

(4 citation statements)

References 45 publications

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“…Bên cạnh đó, vật liệu composite chứa Si làm giảm sự giãn nở thể tích của các hạt nano Si, đồng thời làm tăng độ dẫn các ion và điện tử [9], và cung cấp nhiều các tâm lưu trữ lithium, đặc biệt là trên vật liệu nền graphite carbon nitride [10].…”

Section: Giới Thiệu Chungunclassified

Synthesis of g-C3N4-based layered silicon as an anode material for lithium-ion batteries

Nguyen Duc Nhan,

Pham Thi Nhung,

Phan Thi Thuy Trang

et al. 2023

Vietnam j. catal. adsorp.

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The Si/g-C3N4 composite was prepared by a hydrothermal method using Si and g-C3N4 as precursors, in which Si and g-C3N4 were obtained from CaSi2 and melamine, respectively. This composite was used as an anode material for Lithium ion battery, which delivered a specific capacity of 135.6 mAh.g– 1 at current density of 1000 mA.g-1 and exhibited a stable cycling performance. This improvement compared to the pure Si anode is ascribed to the key role of g-C3N4 in relieving the structure stress induced by the large volume variation during lithiation/delithiation. Additionally, the observable enhancement in rate behavior of Si/g-C3N4 anode (108.8 mAh.g-1 at current density of 5000 mA.g-1) demonstrates the superiority of this composite in electronic and ionic conductivity which is clarified by the electrochemical impedance spectroscopy (EIS) result. This result shows g-C3N4 as a promising support to overcome the issue of large volume variation when using pure Si as an anode material.

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Section: Giới Thiệu Chungunclassified

Synthesis of g-C3N4-based layered silicon as an anode material for lithium-ion batteries

Nguyen Duc Nhan,

Pham Thi Nhung,

Phan Thi Thuy Trang

et al. 2023

Vietnam j. catal. adsorp.

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“…However, the theoretical capacity of industrial graphite anode is relatively low, which leads to a reduction in the energy density of LIBs; hence, using graphite as the anode of LIBs faces a clear challenge. Silicon, phosphide, metal oxide, sulfide, etc., can significantly increase the energy density of LIBs and their low cost has been extensively studied, as well as large volume change and poor cycle stability [104,105]. On the basis of these materials, composite graphene can solve the problem, e.g., cobalt sulfide's own capacity decay, low conductivity and cyclicity, which are related to the volume expansion of the electrode, resulting in specific and capacity decays and the formation of polyazo anions [105].…”

Section: Applications Of Graphene-based Nanocomposites In Anodes For ...mentioning

confidence: 99%

“…Finally, the multilayer graphene can be transferred to other substrates and the polymethylmethacrylate (PMMA) acetone on the top can be removed, as shown in Figure 6. Dye-sensitized solar cells as third-generation photovoltaic cells are a new generation of non-silicon-based solar cells, which mainly use nano-TiO2 and photosensitive dye as raw materials to simulate the photosynthesis of plants in nature and convert solar energy into electricity [104,[120][121][122][123]. Cheng et al [124] reported that the conversion efficiency of TiO2@rGO hybrids was higher than that of TiO2 (4.78%).…”

Section: The Applications Of Graphene-based Nanocomposites In Solar C...mentioning

confidence: 99%

Advances in the Applications of Graphene-Based Nanocomposites in Clean Energy Materials

Xiang

Xin

et al. 2021

Crystals

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Extensive use of fossil fuels can lead to energy depletion and serious environmental pollution. Therefore, it is necessary to solve these problems by developing clean energy. Graphene materials own the advantages of high electrocatalytic activity, high conductivity, excellent mechanical strength, strong flexibility, large specific surface area and light weight, thus giving the potential to store electric charge, ions or hydrogen. Graphene-based nanocomposites have become new research hotspots in the field of energy storage and conversion, such as in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion. Graphene as a catalyst carrier of hydrogen fuel cells has been further modified to obtain higher and more uniform metal dispersion, hence improving the electrocatalyst activity. Moreover, it can complement the network of electroactive materials to buffer the change of electrode volume and prevent the breakage and aggregation of electrode materials, and graphene oxide is also used as a cheap and sustainable proton exchange membrane. In lithium-ion batteries, substituting heteroatoms for carbon atoms in graphene composite electrodes can produce defects on the graphitized surface which have a good reversible specific capacity and increased energy and power densities. In solar cells, the performance of the interface and junction is enhanced by using a few layers of graphene-based composites and more electron-hole pairs are collected; therefore, the conversion efficiency is increased. Graphene has a high Seebeck coefficient, and therefore, it is a potential thermoelectric material. In this paper, we review the latest progress in the synthesis, characterization, evaluation and properties of graphene-based composites and their practical applications in fuel cells, lithium-ion batteries, solar cells and thermoelectric conversion.

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“…The PCNNTs provide abundant nitrogen active sites that could anchor LPSs and inhibit the shuttle effect of the Li-S battery; as such, the composite shows excellent electrochemical performance. The porous network structure of the PCNNTs could also alleviate volume expansion during the charge/discharge process of Li-S batteries [34][35]. The CE of the PCNNTs/S electrode is nearly 100%, which indicates the excellent cycling stability and reversibility of the battery.…”

Section: Electrochemical Performance and Mechanismmentioning

confidence: 99%

High-performance lithium-sulfur battery based on porous N-rich g-C3N4 nanotubes via a self-template method

Gao

Zhang

et al. 2021

Int J Miner Metall Mater

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The commercial development of lithium -sulfur batteries (Li -S) is severely limited by the shuttle effect of lithium polysulfides (LPSs) and the non-conductivity of sulfur. Herein, porous g-C 3 N 4 nanotubes (PCNNTs) are synthesized via a self-template method and utilized as an efficient sulfur host material. The one-dimensional PCNNTs have a high specific surface area (143.47 m 2 •g −1 ) and an abundance of macro-/mesopores, which could achieve a high sulfur loading rate of 74.7wt%. A Li-S battery bearing the PCNNTs/S composite as a cathode displays a low capacity decay of 0.021% per cycle over 800 cycles at 0.5 C with an initial capacity of 704.8 mAh•g −1 . PCNNTs with a tubular structure could alleviate the volume expansion caused by sulfur and lithium sulfide during charge/discharge cycling. High N contents could greatly enhance the adsorption capacity of the carbon nitride for LPSs. These synergistic effects contribute to the excellent cycling stability and rate performance of the PCNNTs/S composite electrode.

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Preparation and lithium storage performances of g-C3N4/Si nanocomposites as anode materials for lithium-ion battery

Cited by 9 publications

References 45 publications

Synthesis of g-C<sub>3</sub>N<sub>4</sub>-based layered silicon as an anode material for lithium-ion batteries

Synthesis of g-C<sub>3</sub>N<sub>4</sub>-based layered silicon as an anode material for lithium-ion batteries

Advances in the Applications of Graphene-Based Nanocomposites in Clean Energy Materials

High-performance lithium-sulfur battery based on porous N-rich g-C3N4 nanotubes via a self-template method

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