Suppressing the Shuttling of Polysulfide by a Self-Assembled FeOOH Separator in Li–S Batteries

Wang, Yang; Yang, Liwen; Chen, Changtao; Li, Qian; Zhong, Benhe; Guo, Xiaodong; Wu, Zhenguo; Chen, Yanxiao

doi:10.1021/acs.iecr.0c04546

Cited by 11 publications

(3 citation statements)

References 73 publications

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“…TG analysis of ASR (Figure 3A) showed that the thermal degradation of ASR can be divided into two stages. At the temperature below 170°C, the weight loss (about 1%) at early stage was mainly caused by the moisture evaporation of ASR 36 . The first stage of ASR degradation occurred in the temperature range of 226–306°C, with a weight loss of about 7.5%, which was mainly attributed to the degradation of PVC.…”

Section: Resultsmentioning

confidence: 99%

Rigid polyurethane foams reinforced with ultrafine powder from automotive shredder residue

Song

Nie

et al. 2021

Vinyl Additive Technology

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With the booming of the abandoned cars, automobile shredding residual (ASR) increase sharply in recent years. ASRs contain complex components that are difficult to separate and recycle, causing serious environmental impacts. Herein, we report a new strategy for ASR recycling to prepare high value‐added rigid polyurethane foams (RPUFs) with excellent mechanical and thermal properties. Ultrafine ASR powder with homogeneous domain size and activated functional groups, added to the precursor of RPUFs as reinforcing fillers, was fabricated through solid‐state shear milling (S3M) technology. As a nucleating agent, ASR particles can participate in the foaming procedure of RPUFs, which decreased the cell size to ~0.2 mm. Owing to the strong interaction between the ASR and polyurethane matrix, the thermal degradation temperature increased to 246.7°C, 42.4°C higher than the neat one. Inspiringly, the ASR particles can act as reinforcing elements in the cell walls, which can not only increase the compressive strength and modulus to 1.79 and 0.1 MPa respectively, 81% and 71% higher than the neat sample, but also enhance the long‐term fatigue resistance of the foam. This strategy achieves the recycling and utilization of ASR, and expands the application scope of RPUFs as well.

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Section: Resultsmentioning

confidence: 99%

Rigid polyurethane foams reinforced with ultrafine powder from automotive shredder residue

Song

Nie

et al. 2021

Vinyl Additive Technology

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“…Thus, the slow diffusion rate of LiPSs to the active surfaces and the limited accessible surfaces of catalyst would severely impair catalytic reaction efficiency if the catalytic active substances are not sufficiently downsized. Therefore, elevating the utilization of active catalytic sites and improving LiPS surface diffusion properties through uniform nanometer-scale distribution or even atomic-scale distribution is another significant criterion for catalyst introduction in Li–S battery systems. , Recently, transition-metal oxyhydroxides (e.g., CoOOH, FeOOH, and NiOOH), which have similar structural composition to transition-metal oxides/hydroxides, have been proved advantageous to ameliorate the kinetics and improve the electrochemical performances of Li–S batteries. ,− Especially, β-Nickel oxyhydroxide (β-NiOOH) is one of the promising transition-metal oxyhydroxide catalysts. Benefiting from the analogous structural composition with NiO and Ni(OH) 2 , β-NiOOH possesses similar catalytic activity and homologous strong polarity for anchoring LiPSs .…”

Section: Introductionmentioning

confidence: 99%

Rational Design of β-NiOOH Nanosheet-Sheathed CNTs as a Highly Efficient Electrocatalyst for Practical Li–S Batteries

Wang¹,

Lu²,

et al. 2021

ACS Appl. Mater. Interfaces

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The shuttle effects of polysulfide intermediates (LiPSs) and sluggish kinetics during sulfur reduction reaction (SRR) process severely exacerbate the electrochemical performances of Li–S batteries. Herein, a unique nanocatalyst comprising β-NiOOH nanosheets uniformly implanted on the surface of carbon nanotubes (CNT@NiOOH) was designed and synthesized for sulfur cathodes. The β-NiOOH nanosheets have great capability of adsorbing LiPSs as well as superior catalytic activity for accelerating LiPS conversion, providing a more efficient method to restrain shuttle effects and improve the kinetics of SRR. Moreover, the nanometer-scale epitaxial growth and uniform distribution of β-NiOOH on CNTs provide a multidimensional catalytic skeleton with sufficient accessible active surfaces, unimpeded LiPS diffusion pathways, and resultant high utilization of active sites. Simultaneously, stable electron transportation pathways are also obtained by being synthesized on CNTs to avoid the faultiness of poor electron conductivity of β-NiOOH. These conspicuous advantages contribute to fully exert the catalytic and LiPS anchoring potential of CNT@NiOOH, bringing about the ultralong cycle performance and excellent capacity reversibility at a high discharge rate. Reticular CNT@NiOOH frameworks are assembled with the sulfur composite materials (SCMs) by a self-assembly method, and a super-high capacity of 813.3 mA h g–1 after 400 cycles at 0.5 C with a small capacity degradation of 0.07% per cycle is achieved. Furthermore, the 3 A h pouch-type cell with the SCM/CNT@NiOOH cathode attains a super-high energy density of about 320 W h kg–1 and shows a superior capacity retention as high as 75.9% after 50 cycles at 0.2 C. This work provides a promising method to accelerate the SRR process and restrain the shuttle effects for practical long-life and high-capacity Li–sulfur batteries.

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“…Owing to their chemical stability, high abundance, low cost, and eco-friendly nature, iron-based materials attract tremendous attention. − Iron oxide-hydroxide (FeOOH), as an important naturally occurring form of iron, is widely present in environmental media such as soil, water sediments, and mine wastewater . FeOOH has been widely applied in electrode materials, ,, adsorption of harmful ions, , and degradation of organic pollutants , because of its high specific capacity, large specific surface area, as well as the high density of surface hydroxyl groups. However, its application in organic synthesis catalysis is rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Ce-Doped α-FeOOH as a High-Performance Catalyst for Atom-Economic Synthesis of Imines: Enhanced Oxygen-Activating Capacity and Acidic Property

Cao

Dai

Qin

et al. 2021

Ind. Eng. Chem. Res.

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Iron oxide-hydroxide (FeOOH), a naturally abundant iron-based material, has been widely applied in electrode materials, adsorption of harmful ions, and degradation of organic pollutants. However, it has rarely been used as a heterogeneous catalyst in organic reactions. Herein, we attempt to extend its application to the catalytic synthesis of imines by preparing a Ce-doped α-FeOOH catalyst. The as-prepared Fe 0.9 Ce 0.1 OOH exhibited excellent catalytic performance in the atom-economic synthesis of imines by one-pot oxidative coupling from alcohols and amines. Mechanistic experiments and corresponding characterizations demonstrate that FeOOH acts as an intermediate facilitating the [O] cycling of Ce 4+ /Ce 3+ , enhancing the oxygen-activating capacity of the catalyst to accelerate the rate-controlling step of benzyl alcohol oxidation. Moreover, the FeOOH surface is rich in acid sites, which greatly promote the condensation of aldehyde and amine. The present work may provide new insights into the design of novel active and eco-friendly catalysts for organic oxidation reactions.

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Suppressing the Shuttling of Polysulfide by a Self-Assembled FeOOH Separator in Li–S Batteries

Cited by 11 publications

References 73 publications

Rigid polyurethane foams reinforced with ultrafine powder from automotive shredder residue

Rigid polyurethane foams reinforced with ultrafine powder from automotive shredder residue

Rational Design of β-NiOOH Nanosheet-Sheathed CNTs as a Highly Efficient Electrocatalyst for Practical Li–S Batteries

Ce-Doped α-FeOOH as a High-Performance Catalyst for Atom-Economic Synthesis of Imines: Enhanced Oxygen-Activating Capacity and Acidic Property

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