Electrochemical Properties of Zn–Al–La Layered Double Hydroxides in Zn–Ni Secondary Batteries

Abstract

Zn–Al–La layered double hydroxides (LDHs) were prepared by the hydrothermal method and used as a new anodic material for Zn–Ni secondary batteries. The morphology and microstructure of Zn–Al–La-LDHs were analyzed by Fourier transform infrared, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The electrochemical properties of Zn–Al–La-LDHs as negative electrode materials for Zn–Ni batteries were studied by the cyclic voltammetry, Tafel polarization curve, and constant current charge–discharge test. XRD and SEM analysis showed that the crystallinity of the prepared Zn–Al–La-LDHs was good and the dispersion was uniform and showed regular hexagonal structures. The results of electrical properties show that Zn–Al–La-LDHs have good cycle reversibility and corrosion resistance when applied to Zn–Ni secondary batteries. The analysis of galvanostatic charge–discharge measurement results shows that the Zn–Al–La-LDH electrode has excellent cycle stability and charge–discharge characteristics. After 150 cycles, the cycle retention rate can reach 91.63%.

Evaluation of the Physicochemical Properties and Antiaging Properties of Bitumen Mastic Modified by Layered Double Hydroxides

“…The first three sharp peaks were characteristic of hydrotalcite compounds with diffraction peaks at 34,946, 14,430, and 3488 a.u. This indicated that the LDHs had good preferred orientation and crystal quality [34]. The peaks 003, 006, and 012 corresponded to 2θ = 11.60 • , 23.38 • , and 34.84 • , respectively.…”

Layered Double Hydroxides as the Unique Product of Target Ionic Construction for Energy, Chemical, Foods, Cosmetics, Medicine and Ecology Applications

“…Thus, various Zn-LDHs can be used in the negative zinc electrode of alkaline batteries. In works, [33,34] ZnÀ Al LDHs have been synthesized and their electrochemical properties have been studied. It should be noted that the authors chose the type of LDH stochastically based on the literature data.…”

Ternary layered double hydroxide cathode materials for electrochemical energy storage: a review and perspective

“…Analysis of the measurement results of constant current charge and discharge showed that a ZnAlLa-LDH electrode with Al/La = 4 has better cycle reversibility, and the cycle retention rate could reach 91.63% after 150 cycles. 188…”