Enhanced Potassium-Ion Battery Electrolytes
Author Information
Author(s): Dhasarathaboopathy Mukhilan, Sabhapathy Palani, Gurkan Burcu
Primary Institution: Department of Chemical and Biomolecular Engineering, Case Western Reserve University
Hypothesis
Can a binary salt approach improve the transport and stability of potassium-ion battery electrolytes?
Conclusion
The study demonstrates that a mixed bi-salt approach in water-in-salt electrolytes can significantly enhance the transport properties and electrochemical stability for potassium batteries.
Supporting Evidence
- The mixed bi-salt approach achieved a high K+ concentration of 36 molal.
- The ionic conductivity of the new electrolyte was measured at 18 mS cm−1 at 25 °C.
- The electrochemical stability window exceeded 4.74 V.
Takeaway
This study found a way to make better battery juice for potassium batteries by mixing two types of salts, which helps the battery work better and last longer.
Methodology
The study involved creating a eutectic mixture of potassium acetate and potassium trifluoromethane sulfonate salts and analyzing its properties using Raman and NMR spectroscopy.
Digital Object Identifier (DOI)
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