![]() mH 2O, offer various possible valence states provided by mixed metal ions (M 2+ and M 3+) in the host layer.LDHs, which can be expressed as x+(A n−) x/n Compared with single metal hydroxides, layered double hydroxides (LDHs), as a class of two-dimensional anionic clays, show larger basal spacing owing to the pillaring of interlayer species, which can favor the intercalation of Li +. Nevertheless, the sluggish rate capability and poor cycling stability of Ni(OH) 2 have hindered its application. reported promising performance of β-Ni(OH) 2–reduced graphene oxide composites as an anode for LIBs. Layered metal hydroxides, like Ni(OH) 2, have been considered as negative electrode materials for LIBs owing to their structure with large interlayer spacing that enables rapid transfer of lithium ions. The necessity of increasing the energy and power density has made it urgent to discover new types of anode materials with higher capacity than graphite, good rate performance, and cycling stability. However, graphite is limited by its relatively low theoretical capacity (372 mAh g −1). Graphitic carbon has long been employed as the most common intercalation-type negative electrode material. Rechargeable lithium-ion batteries (LIBs) dominate the market for several decades due to their outstanding energy density, high working voltage, and long cycle life. 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. 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. 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. 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. Li +/Li, which is better than what obtained with a polyvinylidene difluoride (PVDF)-based electrode. 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) and of the binder on the performance of the material is investigated in 1 M LiPF 6 in EC/DMC vs. Nickel aluminum layered double hydroxide (NiAl LDH) with nitrate in its interlayer is investigated as a negative electrode material for lithium-ion batteries (LIBs). ![]()
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