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Updated: Jan 22, 2026
06:53
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
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A polyoxovanadate-based metal-organic framework unlocks the potential for advanced calcium-ion storage
Yiran Cao1,2, Lixiao Xiang1, Wei Wei1
1College of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, P. R. China. wangxiakuaile@qdu.edu.cn.
Chemical Communications (Cambridge, England)
|January 21, 2026
Summary
Researchers developed a novel Co,V-POMOFs/GO hybrid material to overcome challenges in calcium-ion batteries. This advanced cathode material demonstrates high energy density and excellent stability for next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Calcium-ion batteries face kinetic barriers due to high Ca2+ charge density.
- Developing stable and high-performance cathodes is crucial for advancing multivalent battery technology.
Purpose of the Study:
- To engineer a cathode material that mitigates kinetic barriers for Ca2+ insertion/extraction.
- To enhance the energy density and cycling stability of calcium-ion battery cathodes.
Main Methods:
- Fabrication of a hybrid cathode using Cobalt-Vanadium-based polyoxometal-organic frameworks (POMOFs) integrated with graphene oxide (GO).
- Electrochemical characterization including galvanostatic charge-discharge cycling and rate capability tests.
Main Results:
- The Co,V-POMOFs/GO hybrid cathode achieved a high specific capacity of 320.45 mAh g-1 at a current density of 50 mA g-1.
- The material exhibited extended cycling stability, demonstrating its robustness for practical applications.
- Synergistic effects between POMs, MOFs, and GO contributed to improved electrochemical performance.
Conclusions:
- The engineered Co,V-POMOFs/GO hybrid presents a promising cathode material for advanced multivalent batteries.
- This work establishes a new paradigm for designing high-performance battery cathodes by combining redox-active POMs, stable MOFs, and volume-buffering GO.
- The developed material effectively addresses kinetic limitations in calcium-ion battery systems.
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