Carbon cloth supported graphitic carbon nitride nanosheets as advanced binder-free electrodes for supercapacitors

Zhu, Jun; Kong, Lirong; Shen, Xiaoping; Zhu, Guoxing; Ji, Zhenyuan; Xu, Keqiang; Zhou, Hu; Yue, Xiaoyang; Li, Baolong

doi:10.1016/j.jelechem.2020.114390

Cited by 26 publications

(15 citation statements)

References 36 publications

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“…The absence of 001 reflection indicates that electrochemical oxidation of electrodes is unlikely even under prolonged VRFB operating conditions. The other possible microstructural change under VRFB conditions could be the insertion of ionic species (e.g., sulfate anion from aqueous vanadium electrolytes) into the interlayer spaces of graphitic sheets leading exfoliation. , Any such changes will reflect in the (002) and (100) peaks which are commonly used to determine the stacking order of graphitic carbon layers and in-plane C–C bond distances. , It should be noted that the asymmetrical (002) line can be divided into sharp and broad components representing ordered stacking of graphitic layers and disordered layers including amorphous motifs, respectively . Considering the poor spectral resolution associated with a broad component; hereafter, we will focus on the evolution of relatively ordered graphitic structures of an electrode.…”

Section: Resultsmentioning

confidence: 99%

“…23,24 Any such changes will reflect in the (002) and (100) peaks which are commonly used to determine the stacking order of graphitic carbon layers and inplane C−C bond distances. 4,25 It should be noted that the asymmetrical (002) line can be divided into sharp and broad components representing ordered stacking of graphitic layers and disordered layers including amorphous motifs, respectively. 21 Considering the poor spectral resolution associated with a broad component; hereafter, we will focus on the evolution of relatively ordered graphitic structures of an electrode.…”

Section: Resultsmentioning

confidence: 99%

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Long-Term Structural and Chemical Stability of Carbon Electrodes in Vanadium Redox Flow Battery

Sivakumar

Prabhakaran

Duanmu

et al. 2021

ACS Appl. Energy Mater.

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Predicting the performance decay in carbon electrodes is critical to maximizing the longevity of redox flow battery (RFB) systems. This study investigates the effect of long-term cycling (over 8000 cycles) on the structural and chemical evolution of carbon electrodes. We find that the microstructural aspects such as graphitic stacking order and interlayer spacing along with overall morphological construct remain largely unchanged even after the prolonged cycling process. Conversely, significant changes in surface chemistry such as the evolution of functional groups and point defects are evident from our combined multimodal spectroscopic and computational analysis. The X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) analysis reveal chemical absorption of chloride counter anions at point defects within the graphitic surface. Additionally, our results suggest that vanadium cation plays an important role in counter anion–carbon surface interaction and subsequently the surface chemistry evolutions. Our findings provide insights about surface chemical evolution that is critical for predicting electrode performance and longevity of RFB.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Long-Term Structural and Chemical Stability of Carbon Electrodes in Vanadium Redox Flow Battery

Sivakumar

Prabhakaran

Duanmu

et al. 2021

ACS Appl. Energy Mater.

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“…Moreover, the prepared NNCN‐800 showed excellent electrochemical performance, namely, a capacitance of 316.8 F g −1 at a current density of 1 A g −1 and 96% initial capacitance retention after 10 000 cycles (Figure 25e,f). With the social demand for flexible supercapacitors, Shen and co‐workers [ 244 ] skillfully grow g‐C 3 N 4 nanosheets in situ on the carbon cloth by a one‐pot pyrolysis method (Figure 25g). The self‐supported binder‐free electrode exhibited a great specific capacitance of 499 F g −1 at 1 A g −1 with an outstanding rate capability (Figure 25h,i).…”

Section: D G‐c3n4 For Energy Storagementioning

confidence: 99%

mentioning

confidence: 99%

2D Graphitic Carbon Nitride for Energy Conversion and Storage

Wang

Liu

et al. 2021

Adv Funct Materials

262

115

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Graphitic carbon nitride (g‐C3N4) have attracted great attention in the field of energy conversion and storage due to its unique layered structure, tunable bandgap, metal‐free characteristic, high physicochemical stability, and easy accessibility. 2D g‐C3N4 nanosheets have the features of short charge/mass transfer path, abundant reactive sites and easy functionalization, which are beneficial to optimizing their performance in different fields. However, the reviews of the comprehensive applications of 2D g‐C3N4 for energy conversion and storage are rare. Herein, this review first introduces the physicochemical properties of bulk g‐C3N4 and g‐C3N4 nanosheets, and then summarizes the synthetic strategies of 2D g‐C3N4 nanosheets in detail, such as thermal oxidation etching, chemical exfoliation, ultrasonication‐assisted liquid phase exfoliation, chemical vapor deposition, and others. Emphasis is focused on the rational design and development of 2D g‐C3N4 nanosheets for the diversified applications in energy conversion and storage, including photocatalytic H2 evolution, CO2 reduction, electrocatalytic H2 evolution, O2 evolution, O2 reduction, alkali‐metal ion batteries, lithium‐metal batteries, lithium–sulfur batteries, metal‐air batteries, and supercapacitors. Finally, the current challenges and perspectives of 2D g‐C3N4 nanosheets for energy conversion and storage applications are discussed.

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“…Carbon cloth (CC) was treated according to our reported work. [25] In brief, pieces of CC were put in concentrated nitric acid for 24 h at room temperature. The treated CC was washed with deionized water and ethanol for several times and dried at 60°C in vacuum.…”

Section: Synthesismentioning

confidence: 99%

Carbon Cloth Supported Nitrogen Doped Porous Carbon Wrapped Co Nanoparticles for Effective Overall Water Splitting

et al. 2021

Self Cite

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The key to the practical application of overall water splitting is to develop high-efficient non-noble metal electrocatalysts. Herein, carbon cloth supported N-doped porous carbon wrapped Co nanoparticles (CC@Co-NPC) are constructed with high bifunctional catalytic activity toward oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline medium. Benefiting from the exposure of abundant Co active sites, and the synergistic effect between Co particles and N-doped carbon species, the CC@Co-NPC delivers small overpotentials of 286 and 340 mV at 100 mA cm À 2 with Tafel values of 59 and 97 mV dec À 1 towards OER and HER, respectively.

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Carbon cloth supported graphitic carbon nitride nanosheets as advanced binder-free electrodes for supercapacitors

Cited by 26 publications

References 36 publications

Long-Term Structural and Chemical Stability of Carbon Electrodes in Vanadium Redox Flow Battery

Long-Term Structural and Chemical Stability of Carbon Electrodes in Vanadium Redox Flow Battery

2D Graphitic Carbon Nitride for Energy Conversion and Storage

Carbon Cloth Supported Nitrogen Doped Porous Carbon Wrapped Co Nanoparticles for Effective Overall Water Splitting

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