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Related Concept Videos

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
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Ionic Crystal Structures02:42

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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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Ion Exchange01:17

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Construction and Testing of Coin Cells of Lithium Ion Batteries
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Hollow structured cathode materials for rechargeable batteries.

Xiaobo Zhu1, Jiayong Tang1, Hengming Huang2

  • 1Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, QLD 4072, Australia.

Science Bulletin
|February 7, 2023
PubMed
Summary
This summary is machine-generated.

Hollow structured cathode materials (HSCMs) offer improved battery performance by increasing surface area and ion transport. Research advances in HSCMs synthesis are crucial for developing high-performance metal-ion batteries.

Keywords:
Cathode materialsElectrochemical performanceHollow structuresRechargeable batteries

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Hollow structuring enhances electrode material performance in rechargeable batteries.
  • Hollow structured cathode materials (HSCMs) are less explored than anodes due to synthesis challenges and volumetric concerns.

Purpose of the Study:

  • To provide an overview of research advances in the synthesis and evolution of HSCMs for metal-ion batteries.
  • To highlight the benefits of hollow structures for improving cathode material kinetics and performance.

Main Methods:

  • Review of existing research on HSCMs synthesis and characterization.
  • Analysis of the advantages of hollow structures for electrochemical performance.

Main Results:

  • Hollow structuring improves specific capacity, rate capability, and cycling performance.
  • Hollow structures enhance surface area, active site accessibility, and mass transport for low-kinetics cathode materials.
  • Potential to balance electrochemical performance and volumetric capacity in HSCMs.

Conclusions:

  • Hollow structuring is a promising strategy for high-performance metal-ion battery cathodes.
  • Precise control over spatial configuration is key to realizing practical HSCMs.
  • Further research into HSCMs synthesis can lead to advanced energy storage solutions.