Synthesis of graphitic carbon nitride via direct polymerization using different precursors and its application in lithium–sulfur batteries

Yao, Shanshan; Xue, Sikang; Peng, Sihuang; Guo, Ruiduo; Wu, Zongzhen; Shen, Xiangqian; Li, Tianbao; Wang, Li

doi:10.1007/s00339-018-2189-x

Cited by 36 publications

(21 citation statements)

References 42 publications

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“…Recent reporting proved that g-C 3 N 4 is an effective polysulfides trapping host, which has multilayered structure fulfilled with tri-s-triazine units connected by Vander Waals force. 23 Because of its special structural characteristics and high nitrogen content, g-C 3 N 4 shows better lithium polysulfide adsorption than polar materials like TiO 2 . 24 However, the pure g-C 3 N 4 modified electrodes with high sulfur loading show weaken electrochemical performance because of the lower electronic conductivity of g-C 3 N 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Recent reporting proved that g‐C 3 N 4 is an effective polysulfides trapping host, which has multilayered structure fulfilled with tri‐s‐triazine units connected by Vander Waals force . Because of its special structural characteristics and high nitrogen content, g‐C 3 N 4 shows better lithium polysulfide adsorption than polar materials like TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

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Freestanding graphitic carbon nitride‐based carbon nanotubes hybrid membrane as electrode for lithium/polysulfides batteries

Yao

Guo

et al. 2020

Int J Energy Res

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Summary Lithium sulfur batteries have drawled worldwide attention in recent years, which benefit of its high‐density energetic, low cost, and environmental benignity. Nevertheless, the shuttle effect of polysulfides and resulting self‐discharge lead to capacity fade loss and poor electrochemical performance. Herein, graphitic‐carbon nitride/carbon nanotubes (g‐C3N4/CNTs) hybrid membrane is fabricated by the flow‐direct vacuum filtration process. The as‐prepared 3‐D freestanding g‐C3N4/CNTs membrane employed as positive current collector containing Li2S6 catholyte solution for lithium/polysulfides batteries. The fabricated g‐C3N4/CNTs provide a physical barriers and chemisorption resist polysulfide shuttling. Moreover, the conductive network constructed by CNTs can empower sulfur to be evenly distributed in the cathode and accelerates electron transport. Thus, to further prove the cooperative effect of g‐C3N4 and CNTs, the freestanding g‐C3N4/CNTs/Li2S6 electrode exhibits more stable electrochemical performance than CNTs/Li2S6 electrode, deliver the first discharge capacity of 876 mAh g−1 at 0.5 C and maintained at 633 mAh g−1 after 300 cycles. The sulfur mass in electrode was increased to 7.11 mg, and the g‐C3N4/CNTs/Li2S6 electrode also possess a high capacity retention of 75.5%. Meanwhile, g‐C3N4 modified CNTs can not only trap polysulfides by strong adsorption but also effectively inhibit the self‐discharge behavior of lithium/polysulfides batteries. As a consequence, the g‐C3N4/CNTs composites for lithium/polysulfides batteries are indicating an excellent electrochemical stability with a long‐term storage without obvious capacity degradation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Freestanding graphitic carbon nitride‐based carbon nanotubes hybrid membrane as electrode for lithium/polysulfides batteries

Yao

Guo

et al. 2020

Int J Energy Res

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“…Meanwhile the sample elaborated by urea consists of smaller sheets and porous sheets. e exfoliation of bulk g-CN results in the formation of large, irregularshaped, porous thin sheets, with a variable degree of flexibility [56,[62][63][64]. Iqbal et al [65] synthesized mesoporous g-CN NSs by a simple one-step approach using glucose and NH 4 I together with the chosen precursor for exfoliation of bulk g-CN.…”

Section: Ermal Condensation Synthesis G-cn Bulk Crystal Ismentioning

confidence: 99%

Graphene and g-C3N4-Based Gas Sensors

Kotbi

Imran

Kaja

et al. 2022

Journal of Nanotechnology

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The efficient monitoring of the environment is currently gaining a continuous growing interest in view of finding solutions for the global pollution issues and their associated climate change. In this sense, two-dimensional (2D) materials appear as one of highly attractive routes for the development of efficient sensing devices due, in particular, to the interesting blend of their superlative properties. For instance, graphene (Gr) and graphitic carbon nitride g-C3N4 (g-CN) have specifically attracted great attention in several domains of sensing applications owing to their excellent electronic and physical-chemical properties. Despite the high potential they offer in the development and fabrication of high-performance gas-sensing devices, an exhaustive comparison between Gr and g-CN is not well established yet regarding their electronic properties and their sensing performances such as sensitivity and selectivity. Hence, this work aims at providing a state-of-the-art overview of the latest experimental advances in the fabrication, characterization, development, and implementation of these 2D materials in gas-sensing applications. Then, the reported results are compared to our numerical simulations using density functional theory carried out on the interactions of Gr and g-CN with some selected hazardous gases’ molecules such as NO2, CO2, and HF. Our findings conform with the superior performances of the g-CN regarding HF detection, while both g-CN and Gr show comparable detection performances for the remaining considered gases. This allows suggesting an outlook regarding the future use of these 2D materials as high-performance gas sensors.

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“…The results showed that the urea-derived CN has number of active N-sites and enhance affinity, which is beneficial for anchoring polysulfide with enhanced electrochemical performance. 23 More importantly, the polymeric properties of CN exhibit an excellent structural flexibility and alleviate the volume expansion of electrode in electrochemical reactions. 24 Recently, a series of metal oxides (such asTiO 2 , MnO 2 , and Fe 2 O 3 , etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Our group has also been optimized the morphologies and crystal structures of CN with polymerization of different organic precursors. The results showed that the urea‐derived CN has number of active N‐sites and enhance affinity, which is beneficial for anchoring polysulfide with enhanced electrochemical performance 23 . More importantly, the polymeric properties of CN exhibit an excellent structural flexibility and alleviate the volume expansion of electrode in electrochemical reactions 24 .…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of titanium‐oxide integrated with graphitic nitride hybrid for enhanced electrochemical performance in lithium‐sulfur batteries

Yao

Wang

et al. 2020

Int J Energy Res

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Lithium-sulfur (Li-S) secondary batteries have been limited by the poor cyclic stability, mainly caused by the dissolution polysulfide species into the electrolyte and subsequent irreversible shuttling effect. Recently, addition of the polysulfide adsorbents within sulfur cathode is effectively improving the electrochemical performance. Herein, TiO 2 integrated with g-C 3 N 4 (TiO 2 @g-C 3 N 4 : TOCN) hybrid was prepared by a facile heating treatment from the precursor of urea and TiO 2 composites, which used as host material for elemental sulfur (TOCN@S) in Li-S batteries. The multifunctional TOCN not only reduced the electrochemical resistance but also provided strong adsorption sites to immobilize sulfur and polysulfide. As a result, the TOCN@S cathode with a sulfur content of 74.5 wt% and a sulfur loading of 3.1 mg cm −2 exhibits a high initial capability of 804 mAh g −1 at 0.5 C with capacity retention of 67.2% after 500 cycles. Additionally, the composite cathode also possesses excellent high-rate performance, retaining a remarkable specific capacity of 630 mAh g −1 even at a rate of 2 C.

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Synthesis of graphitic carbon nitride via direct polymerization using different precursors and its application in lithium–sulfur batteries

Cited by 36 publications

References 42 publications

Freestanding graphitic carbon nitride‐based carbon nanotubes hybrid membrane as electrode for lithium/polysulfides batteries

Freestanding graphitic carbon nitride‐based carbon nanotubes hybrid membrane as electrode for lithium/polysulfides batteries

Graphene and g-C3N4-Based Gas Sensors

Synergistic effect of titanium‐oxide integrated with graphitic nitride hybrid for enhanced electrochemical performance in lithium‐sulfur batteries

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