Effect of acid etching of stainless-steel foils in aqueous rechargeable lithium-ion batteries
Maratova K. Myrzakhmetov B. Rakhman D. Toleuova A. Dauletbay A. Bakenov Z. Konarov A.
December 2025Nature Research
Scientific Reports
2025#15Issue 1
The influence of hydrochloric acid etching on the surface properties and electrochemical performance of stainless-steel foils as current collectors for aqueous energy storage devices was investigated. Stainless-steel foils were etched at 80 °C for 10, 20, and 30 min, and the subsequent effects on surface roughness, wettability, and battery performance were investigated in detail. Etching for 10 min provided slight variations in the surface, while etching for 30 min encompassed serious corrosion with deep pits. The roughness shifted from 0.115 µm to 0.403 µm and enhanced the hydrophilicity. The measurements of the LiFePO4 electrode demonstrated that 10-min etched foils delivered the highest capacity (~ 130 mAh g−1) and stability compared to un-etched or further etched foils. The improved performance is due to moderate roughening, oxide layer removal, and higher contact area efficiency, and hence etching at 10 min is most appropriate for stainless-steel current collectors in aqueous batteries.
Acid etching , Aqueous rechargeable batteries , Current collector , Lithium-ion batteries , Stainless-steel foil
Text of the article Перейти на текст статьи
National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
Department of Chemistry, School of Science and Humanities, Nazarbayev University, Astana, Kazakhstan
Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
Private Institution Nazarbayev University Research Administration, Nazarbayev University, Astana, 010000, Kazakhstan
National Laboratory Astana
Department of Chemistry
Department of Chemical and Materials Engineering
Private Institution Nazarbayev University Research Administration
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026