Research on microstructure and catalysis effects on hydrogen storage alloy of nanosized three ions co‐doped Ce1−3xCuxFexZnxO2

Summary Ce1−3xCu xFe xZn xO2 nano‐particles were synthesized by hydrothermal method. The micro‐structure, spectra features and catalysis effects on hydrogen storage alloy of Ce1−3xCu xFe xZn xO2 were studied. It was researched that the dopants were inserted into the lattice of CeO2 and the solid solubility x was identified as 0.05. The oxygen vacancies contents and degree of lattice distortion were improved, and the band gap energies were decreased. The hydrogen absorption/desorption kinetics of Mg60La10Ni20‐5 mol%Ce1−3xCu xFe xZn xO2 composites were evaluated. The results showed that the catalysts effects were improved by enhancing the doped concentrations. The catalysis mechanism was related with the microstructure and micro‐electronic structure of the catalysts. Nanosizedthree ions co‐doped Ce1‐3xCuxFexZnxO2 solid solutions are synthesized via hydrothermal method. The oxygen vacancies contents are improved andthe micro‐electronic structures are modified by enhancing the doped contents in Ce1‐3xCuxFexZnxO2. The catalysis effects of the solid solutions onhydrogen storage alloys Mg60La10Ni20 are closely associated with the concentrations of oxygen vacancies, micro‐electronic structures and the dopants contents. The sample of Ce0.85Cu0.05Fe0.05Zn0.05O2 exhibits the best catalysis effect.