Enhanced hydrogen storage capacity of NiAl-layered double hydroxide modified with Tb3Fe5O12 nanostructures

Under ultrasonic irradiation, the porous Tb3Fe5O12 (TFO) and Nickel Aluminum layer double hydroxide (NiAl-LDH) were synthesized by investigation the effect of sonication time. Synthesis of TFO was conducted in the presence of tetradentate Schiff-base ligand H(2)salophen, [N,N '-bis(salicylidene)-1,2-phenylenediamine] as complexing agent to size controlling and further growth prevention of crystals. The resultant nanocomposites of TFO/NiAl-LDH used as novel active compounds for applying in hydrogen storage strategies. Comprehensively, the hydrogen capacitance after 15 cycles was displayed on the pure NiAl-LDH and TFO materials about 115 and 334 mAhg(-1) respectively. It demanded the maximum capacitance for Tb3Fe5O12/NiAl-LDH nanocomposites was 451 mAhg(-1), which was higher than the initial NiAl-LDH structure. It was exposed from the spillover effect that; the endorsed electrochemical hydrogen storage (EHS) performance is ascribed to the reaction of the redox pair of Fe3+/Fe2+ at the active sites throughout the EHS procedure. This work delivers a novel plan and potential sorption electrode materials to progress the intrinsic action of layered compounds. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

Under ultrasonic irradiation, porous Tb3Fe5O12 and Nickel Aluminum layer double hydroxide were synthesized by investigating the effect of sonication time. The complexing agent H(2)salophen was used for size controlling and growth prevention of the crystals. The nanocomposites of Tb3Fe5O12/NiAl-LDH showed higher hydrogen capacitance compared to the pure NiAl-LDH and TFO materials, indicating the spillover effect and improved electrochemical hydrogen storage performance due to the redox reaction of Fe3+/Fe2+.