Electrochemical properties of layered double hydroxides containing 3d metal cations

Layered double hydroxide materials coated carbon electrode: New challenge to future electrochemical power devices

“…In light of the above results with CV and EIS studies, we can say that the charge transportation occurs through the LDH via electron hopping between metal cations and ion motion across the pores and channels of the material [54][55][56][57][58]. In order to certify the preceding process and to explain the effect between Mg and Zn ions, suspicion focus is accorded to the phase modification occurring during the oxidation process and the resulting oxidized films were characterized by XRD.…”

“…Previously, we reported that LDHs in which M(II) is a transition metal, undergoing a redox reaction in the range of applied potential, have been proposed as materials with improved charge transport [24][25][26][27][28]. Indeed, electron transfer within these Inorganic lamellar materials can further be promoted by two strategies: (i) the intercalation of redox active anions between the LDH layers and (ii) the presence of transition metal cations within the LDH intralayer domain, itself [17]. Accordingly, the modulation of the intrinsic properties of LDHs (electronic conductivity, redox or acid-base properties) is dependant on the nature of the cations in the layers [29], can render the LDH hybrid structure electroactive and endow redox properties to the LDH layers.…”

“…HTs exhibit a broad versatility which allows their synthesis with different ions for specific applications [10,11], including degradation and adsorption of a wide variety of pollutants such as phenols, oxyanions and dyes [12][13][14]. Recently, Tonelli et al [15] and Mousty et al [16,17] have reviewed the HT materials as electrode modifiers to be used for both electrochemical detection (chemical sensors and biosensors) and energy-storage devices.…”

Iron Is the Active Site in Nickel/Iron Water Oxidation Electrocatalysts

“…It is likely that nickel electrochemistry in [NiFe]-LDH is similar to that in [NiAl]-LDH [ 31 ]. Interestingly, Qiu and Villemure found that charging [NiAl]-LDH in 0.2 M KOH at 0.6 V vs. SCE (~0.74 vs. Hg/HgO) produces Ni(III).…”

Research Progress of NiMn Layered Double Hydroxides for Supercapacitors: A Review

“…Charge transportation happens through the NiMn LDHs host layers via electron hopping between the redox sites and ion motion across the pores or channels in the electrode material to keep the electroneutrality of LDH structure [ 41 ]. The effect of the scan rate (ν) on the electrochemical response of NiMn LDH exhibits that the redox reaction is governed by a diffusion-controlled process, which can be indicated from the linear relationship between ν 1/2 and peak current from both redox peaks.…”