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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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Low-strain metal-organic framework negative electrode for stable all-solid-state batteries
Minje Ryu1, Sung-O Park2, Seongje Lim1
1Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, Republic of Korea.
Nature Communications
|November 4, 2025
Summary
Metal-organic frameworks offer a solution to mechanical stress in all-solid-state batteries. These low-strain electrodes enable stable battery performance, overcoming critical challenges in next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Solid-State Batteries
Background:
- All-solid-state batteries (ASSBs) face significant mechanical challenges due to large volume changes in electrodes, leading to degradation and reduced lifespan.
- Rigid cell architectures exacerbate mechanical stress, particularly in stacked configurations, compromising battery integrity.
- Developing electrodes with minimal volume fluctuation is crucial for stable and durable ASSBs.
Purpose of the Study:
- To investigate metal-organic frameworks (MOFs) as low-strain negative electrodes for sulfide-based ASSBs.
- To evaluate the mechanical stability and electrochemical performance of MOFs integrated with argyrodite solid electrolytes.
- To demonstrate the potential of MOFs in enhancing the durability of ASSB architectures.
Main Methods:
- Integration of a Co-based MOF with a thiophenedicarboxylic acid linker with Li6PS5Cl0.5Br0.5 solid electrolyte.
- Electrochemical cycling of the composite electrode at 30°C (1.5 mA cm⁻²).
- Operando pressure and displacement analysis to monitor mechanical strain during cycling.
- Fabrication and testing of a pouch-type full cell under low stack pressure.
Main Results:
- The Co-based MOF electrode demonstrated high structural reversibility, retaining 82% capacity after 700 cycles.
- A minimal volume change of 1.04% was observed for the MOF electrode during cycling.
- Operando analysis confirmed negligible mechanical strain, validating the low-strain characteristics of the MOF.
- A pouch-type full cell achieved stable performance for 50 cycles at 30°C under 5 MPa stack pressure.
Conclusions:
- Metal-organic frameworks serve as effective low-strain negative electrodes for sulfide-based ASSBs.
- MOFs significantly mitigate mechanical stress, enhancing the structural integrity and cycle life of batteries.
- This research highlights the potential of MOFs for developing robust and durable all-solid-state battery technologies.
