Huge congratulations to Thitiphum Sangsanit et al.

Huge congratulations to
Thitiphum Sangsanit,
Nuttida Matkhaw,
Ronnachai Songthan,
Phatsawit Wuamprakhon,
and Worapol Tejangkura.
Under the supervision of Associate Professor Montree Sawangphruk.
Their research on "Advancing safer and sustainable Supercapacitors: First demonstration of water-in-salt electrolytes in 18650 cylindrical cells" has been published in the Journal of Power Sources (Impact Factor 8.1, T1, CiteScore 16.4)
Key Findings
i. WiSE in 18650 Cells: Successfully implemented WiSE in large-format symmetric AC//AC 18650 cells, maintaining >80% capacitance retention after 50,000 cycles at 2000 mA.
ii. Safety Breakthrough: WiSE-based cells are non-flammable and thermally stable up to 250 °C, unlike flammable ACN systems.
iii. Cellulose Separators:
o Suppress hydrogen evolution reaction (HER).
o Improve cycling stability and ion transport kinetics.
o Offer better electrolyte wettability and contact angle, leading to enhanced compatibility with WiSE.
iv. Electrochemical Stability:
o Optimum performance at 2.1–2.3 V.
o Severe degradation (gas evolution, HF formation, AC dissolution) above 2.7 V.
v. Degradation Mechanisms Identified:
o NMR and DEMS showed formation of hydroxyl radicals, H-TFSI, HF, and fluorinated species at higher voltages.
o These reactions degrade electrodes and increase internal resistance.
Here's the link to the article for further exploration:
https://doi.org/10.1016/j.jpowsour.2025.237152
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