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A Hyperstable Aqueous Zinc-Ion Battery Based on Mo1.74CTz MXene.
Ningjun Chen1, Rodrigo Ronchi1, Joseph Halim1
1Materials Design Division, Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, 58183, Sweden.
Small (Weinheim an Der Bergstrasse, Germany)
|February 19, 2025
Summary
Researchers developed a novel multi-defect MXene cathode for aqueous zinc-ion batteries (AZIBs). This material demonstrates exceptional stability and performance, paving the way for sustainable energy storage alternatives.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Growing demand for electronic devices necessitates safe, stable, and rechargeable aqueous zinc-ion batteries (AZIBs).
- Divalent Zn2+ insertion/extraction challenges require stable cathode materials for AZIBs in aqueous electrolytes.
Purpose of the Study:
- To develop a stable and high-performance cathode material for AZIBs.
- To investigate the potential of a tailored multi-defect MXene (Mo1.74CTz) as a cathode in AZIBs.
Main Methods:
- Assembled a tailored multi-defect MXene, Mo1.74CTz, as a cathode material in AZIBs.
- Evaluated the electrochemical performance and cycling stability of the Mo1.74CTz-based AZIBs.
Main Results:
- Mo1.74CTz cathode achieved 75% capacity retention and nearly 100% Coulombic efficiency over 100,000 cycles.
- Exhibited a specific capacity of 200 mAh g-1 at 0.2 A g-1, surpassing previous MXene-based cathodes.
- Intrinsic structural stability and vertical holes of Mo1.74CTz alleviated MXene collapse during cycling.
Conclusions:
- The tailored multi-defect MXene (Mo1.74CTz) shows significant promise as a stable cathode for AZIBs.
- This advancement contributes to sustainable energy development and offers a potential alternative to lithium-ion batteries.
