Journal
MATERIALS
Volume 11, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/ma11112090
Keywords
aqueous Al-ion; battery; high-rate; electrochemical treatment; titanium dioxide
Categories
Funding
- [EP/L016818/1]
- [646286]
Ask authors/readers for more resources
The potential for low cost, environmentally friendly and high rate energy storage has led to the study of anatase-TiO2 as an electrode material in aqueous Al3+ electrolytes. This paper describes the improved performance from an electrochemically treated composite TiO2 electrode for use in aqueous Al-ion batteries. After application of the cathodic electrochemical treatment in 1 mol/dm(3) KOH, Mott-Schottky analysis showed the treated electrode as having an increased electron density and an altered open circuit potential, which remained stable throughout cycling. The cathodic treatment also resulted in a change in colour of TiO2. Treated-TiO2 demonstrated improved capacity, coulombic efficiency and stability when galvanostatically cycled in 1 mol.dm(-3) AlCl3/l mol.dm(-3) KCl. A treated-TiO2 electrode produced a capacity of 15.3 mA.h.g(-1) with 99.95% coulombic efficiency at the high specific current of 10 A/g. Additionally, X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy were employed to elucidate the origin of this improved performance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available