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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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Related Experiment Video

Updated: Feb 5, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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A heterobimetallic single-source precursor enabled layered oxide cathode for sodium-ion batteries.

Maofan Li1, Kai Yang, Jiajie Liu

  • 1School of Advanced Materials, Peking University, Peking University Shenzhen Graduate School, Shenzhen 518055, China. zhangmj@pkusz.edu.cn panfeng@pkusz.edu.cn.

Chemical Communications (Cambridge, England)
|September 6, 2018
PubMed
Summary

A novel single-source precursor, sodium cobalt acetylacetonate (NaCo(acac)3), simplifies the synthesis of P2-NaxCoO2 layered oxide cathodes for sodium-ion batteries (SIBs), yielding superior rate capabilities.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Inorganic Chemistry

Background:

  • Layered oxide cathode materials are crucial for high-performance sodium-ion batteries (SIBs).
  • Developing efficient synthesis routes for these materials is essential for practical applications.
  • Current methods often involve multiple steps and complex precursors.

Purpose of the Study:

  • To report a novel single-source precursor, NaCo(acac)3, for synthesizing P2-NaxCoO2 layered oxide cathodes.
  • To demonstrate the effectiveness of this precursor in achieving high-quality cathode materials with excellent electrochemical performance.
  • To explore the potential for synthesizing other layered metal oxides using analogous precursor complexes.

Main Methods:

  • Synthesis of the single-source precursor NaCo(acac)3 from commercially available reagents.
  • Characterization of the precursor's 1D chain structure and stability.
  • Calcination of the precursor to obtain the phase-pure P2-NaxCoO2 cathode material.
  • Electrochemical evaluation of the synthesized P2-NaxCoO2 material, focusing on rate capability.

Main Results:

  • The NaCo(acac)3 precursor was synthesized in nearly quantitative yield and exhibits stability in open air.
  • Calcination of NaCo(acac)3 yielded phase-pure P2-NaxCoO2 with excellent rate capability, outperforming previously reported microspheres.
  • The precursor synthesis is adaptable for creating analogue complexes via cationic replacement.

Conclusions:

  • NaCo(acac)3 serves as an efficient single-source precursor for high-performance P2-NaxCoO2 layered oxide cathodes in SIBs.
  • This approach offers a simplified and scalable route to advanced cathode materials.
  • The methodology can be extended to synthesize a range of high-performance layered metal oxides for energy storage applications.