Related Experiment Video
Updated: Feb 12, 2026
07:44
Determining the Chemical Composition of Corrosion Inhibitor/Metal Interfaces with XPS: Minimizing Post Immersion Oxidation
Published on: March 15, 2017
16.2K
Interlayer-Expanded Metal Oxide/Sulfide Composites for Ultrastable Flexible Hybrid Supercapacitors.
Sara Yaseen1,2,3, Kashif Mairaj Deen2, Edouard Asselin2
1Institute of Physics, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Pakistan.
ACS Applied Materials & Interfaces
|February 10, 2026
Summary
Researchers developed a novel molybdate-ion intercalated oxide/sulfide composite (ZnMoO4/CoMoS4) for advanced energy storage. This material significantly boosts supercapacitor performance, offering high energy and power densities for flexible devices.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Optimizing electrode nanoarchitectures is key for high-performance batteries.
- Improving redox kinetics enhances energy and power density simultaneously.
Purpose of the Study:
- To engineer a molybdate-ion intercalated oxide/sulfide composite for superior electrochemical behavior.
- To enhance pseudocapacitive contributions through precise control of the active site's chemical environment and electronic structure.
Main Methods:
- Hydrothermal synthesis of ZnMoO4/CoMoS4 nanostructures anchored on Cu foil.
- Characterization of the composite's porosity, interlayer spacing, and electrical conductivity.
- Fabrication and testing of a flexible asymmetric supercapacitor (ZnMoO4/CoMoS4||AC).
Main Results:
- The ZnMoO4/CoMoS4 composite exhibited a specific capacitance of 2238.75 F g−1 at 1.2 A g−1.
- The supercapacitor achieved an energy density of 58.3 Wh kg−1 at 637.7 W kg−1.
- The device retained 91.7% capacitance after 2000 cycles, demonstrating excellent stability.
Conclusions:
- The engineered composite offers enhanced ion transport and reduced charge transfer resistance.
- This work presents a scalable strategy for high-performance hybrid electrodes for flexible energy storage.
- The findings provide insights for developing next-generation supercapacitor technologies.
Related Concept Videos
02:37Metallic Solids
20.9K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.9K
03:14Oxidation Numbers
43.1K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
43.1K
03:06Alkali Metals
25.0K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
25.0K
02:26Preparation and Reactions of Sulfides
5.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.8K
02:58Properties of Transition Metals
30.0K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
30.0K
02:51Metal-Ligand Bonds
24.5K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
24.5K