scholarly journals Highly Efficient Nanocarbon Coating Layer on the Nanostructured Copper Sulfide-Metal Organic Framework Derived Carbon for Advanced Sodium-Ion Battery Anode

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1324 ◽  
Author(s):  
Chiwon Kang ◽  
Yongwoo Lee ◽  
Ilhwan Kim ◽  
Seungmin Hyun ◽  
Tae Hoon Lee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Copper Sulfide ◽  
Large Scale ◽  
Metal Organic Framework ◽  
Specific Capacity ◽  
Chemical Properties ◽  
Sodium Ion ◽  
Physico Chemical ◽  
Metal Organic ◽  
Organic Framework

High theoretical capacity and low-cost copper sulfide (CuxS)-based anodes have gained great attention for advanced sodium-ion batteries (SIBs). However, their practical application may be hindered due to their unstable cycling performance and problems with the dissolution of sodium sulfides (NaxS) into electrolyte. Here, we employed metal organic framework (MOF-199) as a sacrificial template to fabricate nanoporous CuxS with a large surface area embedded in the MOF-derived carbon network (CuxS-C) through a two-step process of sulfurization and carbonization via H2S gas-assisted plasma-enhanced chemical vapor deposition (PECVD) processing. Subsequently, we uniformly coated a nanocarbon layer on the Cu1.8S-C through hydrothermal and subsequent annealing processes. The physico-chemical properties of the nanocarbon layer were revealed by the analytical techniques of high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS), and scanning electron microscopy (SEM). We acquired a higher SIB performance (capacity retention (~93%) with a specific capacity of 372 mAh/g over 110 cycles) of the nanoporous Cu1.8S-C/C core/shell anode materials than that of pure Cu1.8S-C. This encouraging SIB performance is attributed to the key roles of a nanocarbon layer coated on the Cu1.8S-C to accommodate the volume variation of the Cu1.8S-C anode structure during cycling, enhance electrical conductivity and prevent the dissolution of NaxS into the electrolyte. With these physico-chemical and electrochemical properties, we ensure that the Cu1.8S-C/C structure will be a promising anode material for large-scale and advanced SIBs.

Metal-organic framework derived FeS/MoS2 composite as a high performance anode for sodium-ion batteries

2021 ◽  
Vol 869 ◽  
pp. 159348
Author(s):  
Likang Fu ◽  
Wenqi Xiong ◽  
Qiming Liu ◽  
Shuyun Wan ◽  
Chenxia Kang ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Organic Framework ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Metal-Organic Framework-Based Stimuli-Responsive Polymers

2021 ◽  
Vol 5 (4) ◽  
pp. 101
Author(s):  
Menglian Wei ◽  
Yu Wan ◽  
Xueji Zhang
Keyword(s):  
Metal Organic Framework ◽  
Chemical Properties ◽  
Stimuli Responsive ◽  
Guest Molecules ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Reversible Phase Transition ◽  
Metal Organic ◽  
External Stimuli ◽  
Organic Framework

Metal-organic framework (MOF) based stimuli-responsive polymers (coordination polymers) exhibit reversible phase-transition behavior and demonstrate attractive properties that are capable of altering physical and/or chemical properties upon exposure to external stimuli, including pH, temperature, ions, etc., in a dynamic fashion. Thus, their conformational change can be imitated by the adsorption/desorption of target analytes (guest molecules), temperature or pressure changes, and electromagnetic field manipulation. MOF-based stimuli responsive polymers have received great attention due to their advanced optical properties and variety of applications. Herein, we summarized some recent progress on MOF-based stimuli-responsive polymers (SRPs) classified by physical and chemical responsiveness, including temperature, pressure, electricity, pH, metal ions, gases, alcohol and multi-targets.

Metal–organic framework-derived CoSe2/(NiCo)Se2 box-in-box hollow nanocubes with enhanced electrochemical properties for sodium-ion storage and hydrogen evolution

2017 ◽  
Vol 5 (35) ◽  
pp. 18823-18830 ◽  
Author(s):  
Seung-Keun Park ◽  
Jin Koo Kim ◽  
Yun Chan Kang
Keyword(s):  
Electrochemical Properties ◽  
Hydrogen Evolution ◽  
Metal Organic Framework ◽  
Sodium Ion ◽  
Zeolitic Imidazolate Framework ◽  
Box Structures ◽  
Ion Storage ◽  
Metal Organic ◽  
Sodium Ion Storage ◽  
Organic Framework

Multishell structured metal selenide nanocubes, namely, Co/(NiCo)Se2 box-in-box structures with different shell compositions, were successfully synthesized by applying zeolitic imidazolate framework-67 (ZIF-67) as a template.

scholarly journals Synthesis of Al-Based Metal-Organic Framework in Water With Caffeic Acid Ligand and NaOH as Linker Sources With Highly Efficient Anticancer Treatment

2021 ◽  
Vol 9 ◽  
Author(s):  
Malihe Zeraati ◽  
Abbas Rahdar ◽  
Dora I. Medina ◽  
Ghasem Sargazi
Keyword(s):  
Electron Microscopy ◽  
Green Synthesis ◽  
Metal Organic Framework ◽  
Cost Effective ◽  
Spherical Particles ◽  
Anticancer Properties ◽  
Synthesis Route ◽  
Anticancer Treatment ◽  
Metal Organic ◽  
Organic Framework

In this study, novel nanostructures of aluminum base metal-organic framework (Al-MOF) samples were synthesized using a sustainable, non-toxic, and cost-effective green synthesis route. Satureja hortensis extract was used as an effective source of linker for the development of the Al-MOF structures. The Fourier-transformed infrared (FTIR) spectrum confirmed the presence of characterization bonds related to the Al-MOF nanostructures synthesized by the green synthesis route. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses revealed that the sample synthesized by Na2-CA was composed of multilayers, although it was agglomerated, but it had dispersed and occurred in spherical particles, indicating active organic matter. N2 adsorption/desorption isotherms demonstrated the significant porosity of the Al-MOF samples that facilitate the high potential of these nanostructures in medical applications. The anticancer treatment of Al-MOF samples was performed with different concentrations using the MTT standard method with untreated cancer cells for 24 and 48 h periods. The results exhibited the significant anticancer properties of Al-MOF samples developed in this study when compared with other MOF samples. Thus, the development of a novel Al-MOF and its application as a natural linker can influence the anticancer treatment of the samples. According to the results, the products developed in this study can be used in more applications such as biosensors, catalysts, and novel adsorbents.

Sign in / Sign up

Export Citation Format

Share Document