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Related Experiment Videos

Framework Dimensional Control Boosting Charge Storage in Conjugated Coordination Polymers.

Kun Fan1,2, Cheng Fu3, Yuan Chen1,2

  • 1School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, 430074, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 9, 2022
PubMed
Summary

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This summary is machine-generated.

Conjugated coordination polymers (CCPs) offer enhanced conductivity for energy storage. Researchers controllably synthesized 1D and 2D copper-based CCPs (CuTABQ) achieving high performance in battery applications.

Area of Science:

  • Materials Science
  • Chemistry
  • Nanotechnology

Background:

  • Conjugated coordination polymers (CCPs) exhibit extended π-d conjugation, promoting electron delocalization and conductivity, making them promising for various applications.
  • Traditional metal-organic frameworks (MOFs) face challenges in precise construction due to complex reactions.
  • CCPs offer superior properties compared to MOFs for applications in sensors, electronics, and energy devices.

Purpose of the Study:

  • To controllably synthesize different dimensional frameworks of conjugated coordination polymers (CCPs) using the same ligand and metal ion.
  • To investigate the impact of structural control on the electrochemical performance of CCPs for energy storage.
  • To demonstrate the potential of precisely engineered CCPs as high-performance battery materials.
Keywords:
cathodesconductive metal-organic frameworksconjugated coordination polymersdual-ion batteriesorganic sodium-ion batteries

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Main Methods:

  • Utilized 2,3,5,6-tetraaminobenzoquinone (TABQ) as the ligand and copper as the metal center.
  • Manipulated reaction conditions to achieve different ligand valences, metal ion valences, and coordination geometries.
  • Synthesized two distinct framework dimensions: 1D-CuTABQ and 2D-CuTABQ.

Main Results:

  • Successfully realized two different framework dimensions (1D and 2D) of copper-based CCPs (CuTABQ) with precise structural control.
  • Achieved high-performance charge storage capabilities in both cation and anion storage.
  • The 2D-CuTABQ framework demonstrated a high reversible capacity (≈305 mAh g⁻¹), excellent rate capability, and remarkable cycling stability (≈170 mAh g⁻¹ after 2000 cycles).

Conclusions:

  • Delicate structural control over CCPs is crucial for achieving high-performance energy storage devices.
  • The synthesized 2D-CuTABQ material significantly outperforms 1D-CuTABQ and most reported MOFs as battery cathodes.
  • These findings pave the way for advanced CCP design in batteries and other technological applications.