ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption

Ma, Chao; Wang, Yicheng; Zhang, Chenghao; Huang, Yufei; Zhang, Xiuqin; Peng, Jing; Chai, Chaochao; Yuan, Mengfei; Ma, Hongchao; Zhai, Maolin

doi:10.1016/j.apsusc.2023.157913

Cited by 11 publications

(3 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The coprecipitation method was used to synthesize ZIF-67 according to the literature . Briefly, 4.656 g of Co(NO 3 ) 2 ·6H 2 O was dissolved in 100 mL of methanol (solution A).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Keggin-Type Polyoxometalate and Co Nanoparticles Codecorated Separator for High-Performance Lithium–Sulfur Battery

Sun,

Wu,

Xia

et al. 2024

Crystal Growth & Design

View full text Add to dashboard Cite

The Li−S battery has garnered widespread attention as an intriguing new energy storage equipment due to its remarkable energy density and low cost. Nevertheless, the infamous shuttle effect seriously hinders the commercialization process. In order to address this issue, this study rationally synthesizes the composites comprising Keggin-type polyoxometalate and Co nanoparticles, which are then coated on a pristine polypropylene separator. The modified separator can greatly inhibit lithium polysulfide shuttling, thereby leading to a greatly improved electrochemical performance. At the first cycle, the fabricated Li−S battery exhibits a specific discharge capacity of 1335.7 mA h g −1 , surpassing the 938.7 mA h g −1 capacity of an unmodified separator. At a current density of 1C, the initial reversible discharge capacity reaches 988.2 mA h g −1 , and even after 500 cycles, it still retains a remaining capacity of 664.2 mA h g −1 , with a capacity decay rate of 0.066% per cycle. Even at a high sulfur loading of 4.2 mg cm −2 , the device displays a remarkable initial discharge capacity of 1158.2 mA h g −1 , with a remaining capacity of 952.7 mA h g −1 after 70 cycles (0.1C). This significant performance enhancement could be ascribed to the synergistic effect of PMo 12 /Co−NCe, which exhibits greatly decreased electron transfer resistance and contact angle to the electrolyte, facilitating the rapid transport of Liion and kinetics. Meanwhile, the severe shuttle effect is alleviated effectively by combining the strong catalytic activity of PMo 12 and Co nanoparticles with long-chain polysulfides.

show abstract

“…The coprecipitation method was used to synthesize ZIF-67 according to the literature . Briefly, 4.656 g of Co(NO 3 ) 2 ·6H 2 O was dissolved in 100 mL of methanol (solution A).…”

Section: Methodsmentioning

confidence: 99%

“…The coprecipitation method was used to synthesize ZIF-67 according to the literature. 46 Briefly, 4.656 g of Co(NO 3 ) 2 •6H 2 O was dissolved in 100 mL of methanol (solution A). Similarly, 5.254 g of 2-methylimidazole dissolved in 100 mL of methanol was denoted as solution B.…”

Section: Materials Synthesis 211 Synthesis Of the Zif-67mentioning

confidence: 99%

Keggin-Type Polyoxometalate and Co Nanoparticles Codecorated Separator for High-Performance Lithium–Sulfur Battery

Sun,

Wu,

Xia

et al. 2024

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…One of the effective ways to obtain an ideal EMW absorption material with thin thickness and good impedance matching is to introduce magnetic particles obtained by high‐temperature carbonization of MOF. [ 18 ] Huang et al [ 19 ] used Cu–MOF as a precursor and introduced Ni to prepare Ni/NiO/Cu@C composites with RL min of −38.1 dB and a thickness of 3.2 mm. The porous structure produced by pyrolysis is used to increase the interface polarization, and Ni introduced into the carbon matrix can adjust the impedance matching, thereby obtaining excellent EMW absorption performances.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Metal–Organic Framework‐Derived LaCo/C‐Decorated Ti₃C₂T_x Composites with High Electromagnetic Wave Absorption

Huang,

Zhao,

Chen

et al. 2024

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

Thin‐thickness and light‐weight electromagnetic wave (EMW) absorption materials are critically needed for stealth technology in the military stealth field. The special structure of a material is important for improving its good EMW absorption. In this work, a series of porous MOF‐derived LaCo/C decorated Ti 3 C 2 T x (LaCo/C/Ti 3 C 2 T x ) composites were prepared by carbonization at high temperatures. Impressively, the minimum reflection loss (RLmin) of LaCo/C/Ti 3 C 2 T x ‐2 is ‐47.72 dB at 10.26 GHz (thickness 2.3 mm), and the optimal effective absorption bandwidth is 5.45 GHz (thickness 1.9 mm). The excellent EMW absorption properties are due to multiple electromagnetic loss mechanisms, such as polarization loss, magnetic loss, and multiple reflections and scattering. This work provides a new route for the application of Ti 3 C 2 T x ‐based derivatives.This article is protected by copyright. All rights reserved.

show abstract

An Efficient Bifunctional Core‐Shell ZIF‐90@ZIF‐67 Composite as a Stable Pickering Interfacial Catalyst for the Deacetalization–Knoevenagel Tandem Reaction

Liu,

Zhang,

Dong

et al. 2024

Chemistry A European J

View full text Add to dashboard Cite

Exploiting advanced solid particles is crucial to the construction of Pickering emulsions catalysis. Recently, metal‐organic frameworks (MOFs) have been used as ideal emulsifiers stabilizing Pickering emulsions for interfacial catalysis. Although Pickering emulsions stabilized by core‐shell MOFs have significant importance in practical studies, to date there have been very limited reports on this topic. Herein, ZIF‐90@ZIF‐67, a core‐shell material with simultaneous acid‐base bifunctionality, was synthesized by seeded epitaxial growth. It was firstly applied as an emulsifier in Pickering emulsions to catalyze the deacetalization‐Knoevenagel tandem reaction, which exhibited excellent catalytic properties and achieved extremely high yields. Additionally, ZIF‐90@ZIF‐67 showed high stability and remained well repeatable after five cycles. This work provides a platform for the design of structurally and functionally diverse MOF‐based Pickering emulsions interfacial catalysis.

show abstract

ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption

Cited by 11 publications

References 63 publications

Keggin-Type Polyoxometalate and Co Nanoparticles Codecorated Separator for High-Performance Lithium–Sulfur Battery

Keggin-Type Polyoxometalate and Co Nanoparticles Codecorated Separator for High-Performance Lithium–Sulfur Battery

Fabrication of Metal–Organic Framework‐Derived LaCo/C‐Decorated Ti₃C₂T_x Composites with High Electromagnetic Wave Absorption

An Efficient Bifunctional Core‐Shell ZIF‐90@ZIF‐67 Composite as a Stable Pickering Interfacial Catalyst for the Deacetalization–Knoevenagel Tandem Reaction

Contact Info

Product

Resources

About

ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption

Cited by 11 publications

References 63 publications

Keggin-Type Polyoxometalate and Co Nanoparticles Codecorated Separator for High-Performance Lithium–Sulfur Battery

Keggin-Type Polyoxometalate and Co Nanoparticles Codecorated Separator for High-Performance Lithium–Sulfur Battery

Fabrication of Metal–Organic Framework‐Derived LaCo/C‐Decorated Ti3C2Tx Composites with High Electromagnetic Wave Absorption

An Efficient Bifunctional Core‐Shell ZIF‐90@ZIF‐67 Composite as a Stable Pickering Interfacial Catalyst for the Deacetalization–Knoevenagel Tandem Reaction

Contact Info

Product

Resources

About

Fabrication of Metal–Organic Framework‐Derived LaCo/C‐Decorated Ti₃C₂T_x Composites with High Electromagnetic Wave Absorption