Hydrogen storage in a rare-earth perovskite-type oxide La0.6Sr0.4Co0.2Fe0.8O3 for battery applications

Surface modification of perovskite‐type oxide LaFeO3 with electroless nickel deposition for application in MH‐Ni batteries

“…The highest value is achieved using the electrode 3# with the longest coating time. These data suggest that the nickel plating could improve the HRD performance of the LFO electrode material more effectively compared to other methods, such as ionic doping, [19][20][21][22] carbon cladding modification, [27][28][29] composite with rGO, [30] and so on. However, the HRD value of the nickel-coated LFO alloy is lower than that of the LaNi 5 type alloy, and therefore further improvement in the performance of the surface modified LFO alloy is required in the future work.…”

“…[18] Further studies have revealed that the conductivity of this type of electrode could be significantly affected by the doping of different rare earth elements (or alkaline earth metals) and transition group metals. [19][20][21] Ren et al [22] reported that by increasing the amount of the doped ions, the discharge capacity of the battery with La 1-x Na x FeO 3 (x = 0-0.8) oxide electrodes at 60 • C was improved from 178.8 to 356.7 mAhg −1 , which was higher than that of battery with commercial AB 5 hydrogen storage electrode at room temperature. Deng et al [23,24] developed the La 1-x Sr x FeO 3 oxide electrodes (x = 0.2, 0.4) using a stearic acid combustion method and found that the initial discharge capacity of the as-fabricated battery was significantly improved by the addition of Sr element in the A-site cation, which can strikingly improve the conductivity of the electrode.…”

“…[ 18 ] Further studies have revealed that the conductivity of this type of electrode could be significantly affected by the doping of different rare earth elements (or alkaline earth metals) and transition group metals. [ 19–21 ] Ren et al. [ 22 ] reported that by increasing the amount of the doped ions, the discharge capacity of the battery with La 1‐x Na x FeO 3 (x = 0–0.8) oxide electrodes at 60°C was improved from 178.8 to 356.7 mAhg −1 , which was higher than that of battery with commercial AB 5 hydrogen storage electrode at room temperature.…”

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

“…167,168 The large-radius rare earth ions are introduced into the lattice of the electrode material to induce distortion, thereby decreasing the charge transfer resistance and enhancing the electrode material's conductivity. 169,170 LiCoO 2 is a common cathode material for LIB with a theoretical specic capacity of up to 274 mA h g −1 . It is currently the cathode material with the highest compaction density and thus the manufactured lithium-ion battery has the largest volume specic energy, and it has become the primary material for batteries used in tablet computers and mobile smart terminals.…”

Preparation and application of sulfonated polysulfone in an electrochemical hydrogen storage system

“…19 In addition to MHs in energy systems, metal oxides (MOs) and MMOs are recently reported for energy applications. Henao et al 20 reported a new perovskite based rare-earth elements, with the general formula of La-Sr-Co-Fe-O, as a promising material for electrochemical hydrogen storage. They expressed a maximum hydrogen absorption capacity of 1.72 wt% at 333 K in an alkaline electrolyte, with approximately 25% self-discharge rate after 24 hours storage.…”