A high conductive TiC–TiO2/SWCNT/S composite with effective polysulfides adsorption for high performance Li–S batteries

Geng, Xianwei; Yi, Ruowei; Lin, Xiangfei; Liu, Chenguang; Sun, Yi; Zhao, Yatong; Li, Yinqing; Mitrović, Ivona Z.; Li, Rui; Yang, Li; Zhao, Cezhou

doi:10.1016/j.jallcom.2020.156793

Cited by 17 publications

(10 citation statements)

References 46 publications

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“…It can be clari ed by the porous interconnected structural character of the PANI matrix and the synergy between ZnO and SiO 2 . Thereby, it is evident that the existence of crystalline ZnO-SiO 2 composite with new porosity could reinforce the PANI@ZnO-SiO 2 stability [46]. This result also proved that this hybrid material had an excellent electrochemical reversibility.…”

Section: Performancementioning

confidence: 54%

Development and Characterization of Novel Hybrid Materials Formed from ZnO-SiO2-Modified and Polyaniline for Organic Dyes Adsorption and Electrochemical Supercapacitor Applications

Benchikh

Lahreche

Benmimoun

et al. 2022

Preprint

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Polyaniline (PANI) coated ZnO-SiO2 based hybrid material was prepared successfully by in-situ polymerization method and the product was analyzed by XPS, XRD, TEM, UV-vis, TGA, FTIR and BET techniques. According to these characterization results, ZnO were successfully incorporated with SiO2 and PANI matrix was also supported on ZnO–SiO2. The optical band gap was calculated from the Tauc’s plot it has been found 2.89 eV. The development of a PANI@ZnO–SiO2 is a new way to achieve better adsorption efficacy for Congo Red (CR) and Methylene Blue (MB) dyes in aqueous solutions due to the engineered excellent porous structure, which was 83.82 and 71.19 mg.g− 1, respectively. Moreover, this work reports also an extensive study of the effect of the SiO2 on the electrochemical performance of hybrid material based on ZnO and PANI employing cyclic voltammetry. It was found that the perfect stability, which can be sustained during a longtime of the galvanostatic charge-discharge (GCD) operation. The results reveal a superior cycling stability, with 90.1% capacitance retention after 1500 cycles.

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Section: Performancementioning

confidence: 54%

Development and Characterization of Novel Hybrid Materials Formed from ZnO-SiO2-Modified and Polyaniline for Organic Dyes Adsorption and Electrochemical Supercapacitor Applications

Benchikh

Lahreche

Benmimoun

et al. 2022

Preprint

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“…The trapping of soluble PS by nanocrystalline metal oxides added to amorphous carbon is an efficient method to improve the cell’s capacity retention [ 1 , 32 ]. PS are adsorbed on a metal oxide surface or inside pores.…”

Section: Resultsmentioning

confidence: 99%

Nanocrystalline TiO2/Carbon/Sulfur Composite Cathodes for Lithium–Sulfur Battery

et al. 2021

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This paper evaluates the influence of the morphology, surface area, and surface modification of carbonaceous additives on the performance of the corresponding cathode in a lithium–sulfur battery. The structure of sulfur composite cathodes with mesoporous carbon, activated carbon, and electrochemical carbon is studied by X-ray diffraction, nitrogen adsorption measurements, and Raman spectroscopy. The sulfur cathode containing electrochemical carbon with the specific surface area of 1606.6 m2 g−1 exhibits the best electrochemical performance and provides a charge capacity of almost 650 mAh g−1 in cyclic voltammetry at a 0.1 mV s−1 scan rate and up to 1300 mAh g−1 in galvanostatic chronopotentiometry at a 0.1 C rate. This excellent electrochemical behavior is ascribed to the high dispersity of electrochemical carbon, enabling a perfect encapsulation of sulfur. The surface modification of carbonaceous additives by TiO2 has a positive effect on the electrochemical performance of sulfur composites with mesoporous and activated carbons, but it causes a loss of dispersity and a consequent decrease of the charge capacity of the sulfur composite with electrochemical carbon. The composite of sulfur with TiO2-modified activated carbon exhibited the charge capacity of 393 mAh g−1 in cyclic voltammetry and up to 493 mAh g−1 in galvanostatic chronopotentiometry. The presence of an additional Sigracell carbon felt interlayer further improves the electrochemical performance of cells with activated carbon, electrochemical carbon, and nanocrystalline TiO2-modified activated carbon. This positive effect is most pronounced in the case of activated carbon modified by nanocrystalline TiO2. However, it is not boosted by additional coverage by TiO2 or SnO2, which is probably due to the blocking of pores.

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“…First, one-dimensional CNTs could provide fast electron transport paths [ 35 ], and hollow core acts as a nanoscale electrochemical reaction vessel that efficiently limits the large volume variation. Furthermore, the introduction of these abundant functional polar/hydrophilic groups of Ni(OH) 2 nanosphere could restrict the “shuttle effect” of LiPSs through strong chemical adsorption [ 36 , 37 , 38 , 39 , 40 ]. Meanwhile, the intermediate thiosulfate generated by the reaction of nickel hydroxide and LiPSs can accelerate the redox kinetics and promote cycle stability [ 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube-Modified Nickel Hydroxide as Cathode Materials for High-Performance Li-S Batteries

Jin

Yan

et al. 2022

Nanomaterials

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The advantages of high energy density and low cost make lithium–sulfur batteries one of the most promising candidates for next-generation energy storage systems. However, the electrical insulativity of sulfur and the serious shuttle effect of lithium polysulfides (LiPSs) still impedes its further development. In this regard, a uniform hollow mesoporous Ni(OH)2@CNT microsphere was developed to address these issues. The SEM images show the Ni(OH)2 delivers an average size of about 5 μm, which is composed of nanosheets. The designed Ni(OH)2@CNT contains transition metal cations and interlayer anions, featuring the unique 3D spheroidal flower structure, decent porosity, and large surface area, which is highly conducive to conversion systems and electrochemical energy storage. As a result, the as-fabricated Li-S battery delivers the reversible capacity of 652 mAh g−1 after 400 cycles, demonstrating excellent capacity retention with a low average capacity loss of only 0.081% per cycle at 1 C. This work has shown that the Ni(OH)2@CNT sulfur host prepared by hydrothermal embraces delivers strong physical absorption as well as chemical affinity.

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A high conductive TiC–TiO2/SWCNT/S composite with effective polysulfides adsorption for high performance Li–S batteries

Cited by 17 publications

References 46 publications

Development and Characterization of Novel Hybrid Materials Formed from ZnO-SiO2-Modified and Polyaniline for Organic Dyes Adsorption and Electrochemical Supercapacitor Applications

Development and Characterization of Novel Hybrid Materials Formed from ZnO-SiO2-Modified and Polyaniline for Organic Dyes Adsorption and Electrochemical Supercapacitor Applications

Nanocrystalline TiO2/Carbon/Sulfur Composite Cathodes for Lithium–Sulfur Battery

Carbon Nanotube-Modified Nickel Hydroxide as Cathode Materials for High-Performance Li-S Batteries

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