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ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH301:11

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All ortho–para directors, excluding halogens, are activating groups. These groups donate electrons to the ring, making the ring carbons electron-rich. Consequently, the reactivity of the aromatic ring towards electrophilic substitution increases. For instance, the nitration of anisole is about 10,000 times faster than the nitration of benzene. The electron-donating effect of the methoxy group in anisole activates the ortho and para positions on the ring and stabilizes the corresponding...
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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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The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
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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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Updated: Feb 11, 2026

Writing and Low-Temperature Characterization of Oxide Nanostructures
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Nanostructured Li3 V2 (PO4 )3 Cathodes.

Huiteng Tan1, Lianhua Xu2, Hongbo Geng3

  • 1Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China.

Small (Weinheim an Der Bergstrasse, Germany)
|April 19, 2018
PubMed
Summary

Nanostructured lithium vanadium phosphate (Li3 V2 (PO4 )3) cathodes significantly enhance lithium-ion battery performance by improving conductivity and ion transport. This review explores various nanostructures for high-power LIBs.

Keywords:
cathode materialslithium vanadium phosphatelithium-ion batteriesnanostructures

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Monoclinic Li3 V2 (PO4 )3 is a promising cathode material for lithium-ion batteries (LIBs) due to its high energy and power densities.
  • Low electrical conductivity and sluggish kinetics hinder the full potential of Li3 V2 (PO4 )3 in high-rate LIB applications.

Purpose of the Study:

  • To review recent advancements in nanostructured Li3 V2 (PO4 )3 hybrid cathodes for high-performance LIBs.
  • To highlight the synthesis strategies and electrochemical properties of various nanostructured Li3 V2 (PO4 )3 materials.

Main Methods:

  • Exploration of 0D (nanoparticles), 1D (nanowires, nanobelts), 2D (nanoplates, nanosheets), and 3D (nanospheres) nanostructured Li3 V2 (PO4 )3.
  • Analysis of how nanostructuring improves electrical conductivity, electrode/electrolyte interface, and ion transport.
  • Discussion of synthetic approaches for creating these nanostructures.

Main Results:

  • Nanostructured Li3 V2 (PO4 )3 demonstrates significantly improved electrochemical performance, including rate capability and cycling stability.
  • Nanotechnology enhances electrical conductivity and facilitates efficient electron and Li+ transport.
  • Nanostructured materials effectively accommodate strain during lithium-ion insertion/extraction.

Conclusions:

  • Advanced nanotechnologies are crucial for overcoming the limitations of Li3 V2 (PO4 )3 in LIBs.
  • Various nanostructured forms of Li3 V2 (PO4 )3 offer promising pathways for developing high-performance LIB cathodes.
  • Future research should focus on optimizing synthetic strategies and exploring the full potential of these nanostructured materials.