Electrochemical study on nickel aluminum layered double hydroxides as high-performance electrode material for lithium-ion batteries based on sodium alginate binder

Abstract

Nickel aluminum layered double hydroxide (NiAl LDH) with nitrate in its interlayer is investigated as a negative electrode material for lithium-ion batteries (LIBs). The effect of the potential range (i.e., 0.01–3.0 V and 0.4–3.0 V vs. Li+/Li) and of the binder on the performance of the material is investigated in 1 M LiPF6 in EC/DMC vs. Li. The NiAl LDH electrode based on sodium alginate (SA) binder shows a high initial discharge specific capacity of 2586 mAh g−1 at 0.05 A g−1 and good stability in the potential range of 0.01–3.0 V vs. Li+/Li, which is better than what obtained with a polyvinylidene difluoride (PVDF)-based electrode. The NiAl LDH electrode with SA binder shows, after 400 cycles at 0.5 A g−1, a cycling retention of 42.2% with a capacity of 697 mAh g−1 and at a high current density of 1.0 A g−1 shows a retention of 27.6% with a capacity of 388 mAh g−1 over 1400 cycles. In the same conditions, the PVDF-based electrode retains only 15.6% with a capacity of 182 mAh g−1 and 8.5% with a capacity of 121 mAh g−1, respectively. Ex situ X-ray photoelectron spectroscopy (XPS) and ex situ X-ray absorption spectroscopy (XAS) reveal a conversion reaction mechanism during Li+ insertion into the NiAl LDH material. X-ray diffraction (XRD) and XPS have been combined with the electrochemical study to understand the effect of different cutoff potentials on the Li-ion storage mechanism. Graphical abstract The as-prepared NiAl-NO3−-LDH with the rhombohedral R-3 m space group is investigated as a negative electrode material for lithium-ion batteries (LIBs). The effect of the potential range (i.e., 0.01–3.0 V and 0.4–3.0 V vs. Li+/Li) and of the binder on the material’s performance is investigated in 1 M LiPF6 in EC/DMC vs. Li. Ex situ X-ray photoelectron spectroscopy (XPS) and ex situ X-ray absorption spectroscopy (XAS) reveal a conversion reaction mechanism during Li+ insertion into the NiAl LDH material. X-ray diffraction (XRD) and XPS have been combined with the electrochemical study to understand the effect of different cutoff potentials on the Li-ion storage mechanism. This work highlights the possibility of the direct application of NiAl LDH materials as negative electrodes for LIBs.

MgAl Saponite as a Transition-Metal-Free Anode Material for Lithium-Ion Batteries

“…Reviewing the GCD curve (Figure 2c) of long cycle test (Figure 2a) in the dQ/dV curve (Figure 2d), four noteworthy oxidation peaks located at 1.16 (oxidation of LiH to LiOH), 1.61, 2.34, and 2.86 V are observed in the second charging cycle, implying the difference between the second and other charging cycles. 5,28 However, with the increase of the cycle number, the peak at 1.61 V moves to 1.93 V and their peak intensity gets a substantial decline, suggesting the major electrochemical reactions transfer into a wider voltage range after the second charging. With regard to the discharging dQ/ dV curves (Figure S3d) in the long cycle test, two voltage ranges (2.5−0.5 and 0.5−0.01 V) were preliminarily discriminated according to the change in peak intensity.…”

“…Among these candidates, transition-metal compounds (oxides, sulfides, hydroxides, etc.) exhibit a great application potential due to their high theoretical capacity (∼800–1000 mA h·g –1 ), ease of preparation, and acceptable cost. − Their capacity derives from the conversion mechanism accompanied by the valence change of transition metals: M x A y + σ y Li + + σ y e – → x M + y Li σ A, where M is the transition metal, such as Fe, Co, Ni, Cu, and V, and A is O, S, or OH. In practical tests, the transition-metal compounds usually show actual capacities exceeding their theoretical values, which is related to the transformation of LiOH into Li 2 O/LiH in solid electrolyte interface (SEI) films or reaction products. − It is noted that LiOH has a double electron-transfer energy storage process, and a low relative molecular weight of 24, resulting in an ultra-high theoretical capacity of 2230 mA h·g –1 based on LiOH + 2Li + + 2e – → Li 2 O + LiH, which is far more than most of the anode materials. − However, the LiOH transformation reaction is only used for the explanation on the unexpected capacity for transition-metal compounds. − In other words, the direct use of LiOH as an anode has rarely been reported, probably due to the strong alkalinity of LiOH leading to battery deterioration and electrode preparation failure caused by strong moisture absorption.…”

Thermal behavior and antibacterial studies of a carbonate Mg–Al-based layered double hydroxide (LDH) for in vivo uses

“…From the Arrhenius pair determined by the Simon method for the second step, extremely high reaction time values were calculated using Eq. (8). Reaction time values of step 2 listed in Table 2 ranged from 10 to 40 times higher than those related to the first step resulting in a significant and probably unrealistic prediction of high stability: about 100 and more than 500 years to reach 50% of degradation at 37 and 25 °C, respectively.…”

“…As the structure, LDHs similarly to hydrotalcite belong to the space group R 3 m-h [1]. LDHs are used in a wide range of applications [2], including catalysis [3], energy conversion and storage [4,5], remediation [6,7], electrochemical and drugs delivery purposes [8,9].…”

ZnAl-SO4 Layered Double Hydroxide and Allophane for Cr(VI), Cu(II) and Fe(III) Adsorption in Wastewater: Structure Comparison and Synergistic Effects

“…LDH are also called “anionic clays” owing to their characteristics as anionic exchangers [ 25 ]. The particular feature derived from their structure [ 26 ] makes these compounds promising materials for a wide range of technological applications in ion exchange/adsorption, pharmaceutics [ 27 ], electrochemistry [ 28 ], catalysis and photocatalysis. In the latter field of research, ZnAl LDH nanosheets are in the hotspot for their specific ability to fix atmospheric nitrogen with the formation of ammonia by UV light under mild conditions [ 29 ].…”