Flexible free-standing cathode enabled via multifunctional Mo2C for high sulfur loading lithium–sulfur batteries

Mao, Yuqiong; Sun, Wang; Yue, Xin‐Yang; Hou, Wenshuo; Deng, Tongtong; He, Liuliu; Li, Fang; Sun, Rui; Wang, Zhenhua; Sun, Kening

doi:10.1016/j.jpowsour.2021.230254

Cited by 27 publications

(15 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that untreated CC is hard to be infiltrated by polar water molecules due to its nonpolar nature. However, ethanol whose polarity is lower than water can be used to accelerate the interaction between nonpolar carbon and water. − Therefore, the wetting ability of CC can also be temporarily improved after ethanol treatment due to the effect of solvent polarity, but the improved wetting ability of ETCC cannot maintain a stable state in air, which is confirmed by the measurement of its contact angle (Figure S5). As the electrochemical response strongly depends on the electrolyte ion adsorption on the surface, the improved surface wettability could inevitably enhance the sensing performance …”

Section: Results and Discussionmentioning

confidence: 82%

“…Due to the nonpolar nature of untreated CC, it is hard to be infiltrated by polar water molecules. Ethanol whose polarity lower than water can be used to accelerate the interaction between nonpolar carbon and water. − To demonstrate that improved hydrophilicity is a vital factor in the enhancement of dopamine-sensing performance, we compared the electrochemical sensing performance of AOCC and ethanol-treated carbon cloth (ETCC). For the preparation of ETCC, CC was immersed into absolute ethyl alcohol solution for 5 min to maintain the wettability before use.…”

Section: Experimental Sectionmentioning

confidence: 99%

See 1 more Smart Citation

Surface Oxygen Functionalization of Carbon Cloth toward Enhanced Electrochemical Dopamine Sensing

Wei

Wang

et al. 2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Metal elements, including noble and transition metals, have always been required in the design of electrochemical sensors. Despite great advances, some drawbacks like the release of metal ions and exfoliation of catalysts from substrates still exist. Acid oxidation treatment, as a simple and effective way, is commonly used in the surface treatment of carbon materials, extensively used either directly as capacitive and catalytic electrodes or as the current collectors. However, its potential to be directly applied for electrochemical sensing has not been explored enough. In this work, a metal-free electrochemical sensor based on a surface oxygen-functionalized carbon cloth (CC) is fabricated through a simple acid oxidation treatment, during which more oxygen-containing groups are introduced, ensuring the solvent-accessible hydrophilic surface of electrodes and the improved surface interaction with dopamine. Our results suggest that the enhanced dopamine sensing performance can be obtained just through the introduction of oxygen-containing groups. Compared with raw CC, the acid-oxidized CC (AOCC) exhibits improved electrochemical sensing performance. A high sensitivity (9320 μA mM −1 cm −2 ), a low detection limit (10 nM), and a wide linear range (0.1−104.5 μM) are achieved. The selectivity, stability, and reproducibility are also proved to be satisfactory. Furthermore, the flexibility of AOCC endows its promising potential in fabricating wearable and soft electronics for human healthcare monitoring.

show abstract

Section: Results and Discussionmentioning

confidence: 82%

Section: Experimental Sectionmentioning

confidence: 99%

Surface Oxygen Functionalization of Carbon Cloth toward Enhanced Electrochemical Dopamine Sensing

Wei

Wang

et al. 2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…[16][17][18] All of these issues have made it difficult to achieve the wide application of lithium-sulfur batteries. 19 To deal with these problems, many methods were tried to enhance the electrochemical performance of lithium-sulfur batteries. 20,21 Among various strategies, the most useful method is to design perfect sulfur host materials to improve the electrochemical performance of lithium-sulfur batteries.…”

Section: Introductionmentioning

confidence: 99%

“…Finally, the shuttle effect of the discharge product of lithium polysulfide leads to poor electrochemical performance during the discharging and charging process 16‐18 . All of these issues have made it difficult to achieve the wide application of lithium–sulfur batteries 19 . To deal with these problems, many methods were tried to enhance the electrochemical performance of lithium–sulfur batteries 20,21 .…”

Section: Introductionmentioning

confidence: 99%

In situ load of sulfur species on hollow carbon spheres as advanced electrode for superior electrochemical activity

Yan-tao

2022

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Hollow carbon nanospheres (HCNS) were successfully prepared using silica as a template. After that, elemental sulfur particles were grown in situ on the surface of the hollow carbon nanospheres by a solution method to prepare HCNS/S composites. RESULTS The morphology and crystal structure of the samples were characterized by scanning electron microscopy and X‐ray diffraction. The electrochemical performance of the samples was tested by constant charge and discharge, cyclic voltammetry and electrochemical impedance spectra using coin 2032 half batteries. The electrochemical tests indicated that the as‐prepared HCNS/S composites exhibited an initial specific capacity of 1162 mA h g−1 at the current density of 0.2 C. CONCLUSION The electrochemical impedance spectra showed that the as‐prepared HCNS/S composites displayed superior electronic conductivity during electrochemical cycles. The employment of HCNS/S composites is beneficial for the improvement of electrochemical performance of lithium–sulfur batteries. © 2022 Society of Chemical Industry (SCI).

show abstract

“…19 For this regard, various self-supporting sulfur cathodes without any Al foil current collector have been proposed to well solve the above-mentioned "two low problem" of active sulfur due to the unique structure. Various carbon materials such as carbon nanotubes, [20][21][22] graphenes, [23][24][25] carbon cloth, [26][27][28] carbon fibers [29][30][31] and carbon foams [32][33][34] have been widely used as self-supporting current collectors for easily building sulfur cathode hybrid materials due to their excellent electronic conductivity and good flexibility. For instance, Song 35 et al prepared a porous carbon-framework-nested nickel foam as a freestanding host for high-energy Li-S batteries.…”

Section: Introductionmentioning

confidence: 99%

Facile preparation of flexible porous carbon fibers as self-supporting sulfur cathode hosts for high-performance Li–S batteries

Lei

Yang

et al. 2022

Dalton Trans.

View full text Add to dashboard Cite

show abstract

Flexible free-standing cathode enabled via multifunctional Mo2C for high sulfur loading lithium–sulfur batteries

Cited by 27 publications

References 54 publications

Surface Oxygen Functionalization of Carbon Cloth toward Enhanced Electrochemical Dopamine Sensing

Surface Oxygen Functionalization of Carbon Cloth toward Enhanced Electrochemical Dopamine Sensing

In situ load of sulfur species on hollow carbon spheres as advanced electrode for superior electrochemical activity

Facile preparation of flexible porous carbon fibers as self-supporting sulfur cathode hosts for high-performance Li–S batteries

Contact Info

Product

Resources

About