Influence of the alloy morphology on the kinetics of AB5-type metal hydride electrodes

Effect of annealing treatment on structure and electrochemical performance of quenched MmNi4.2Co0.3Mn0.4Al0.3Mg0.03 hydrogen storage alloy

“…Zhang et al [29] investigated the microstructure and electrochemical properties of sub-stoichiometric low-cost AB 5 -type alloys containing small amounts of Mg. It was also found previously that rapid quenching and subsequent annealing [30][31][32][33][34][35] …”

Structural and electrochemical characterization of a melt spun AB5-type alloy

“…When comparing the results described above [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], it can be noticed that the alloy composition and the structural properties of the material probably affect the electrochemical properties and their dependencies on the cooling rate. Other factors that might change the electrochemical properties are particle size, electrochemical setup (different cell geometry) and electrode design [21][22][23][24][25][26][27][28].…”

“…One promising option is to change or increase the cooling rate during casting of the metal hydrideforming alloy, for instance, by melt spinning. The effect on the electrochemical properties by changing the cooling rate has been an object for discussion, and the results obtained by different authors are not consistently reported for multicomponent AB 5 -type alloys [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

“…The slope of the hydrogen plateau pressure, obtained directly or by determining the electrochemical potential during discharge, was reduced after rapid solidification of the materials [11][12][13][14][15][16][17][18]. When comparing conventionally cast material with rapidly solidified material, the activation time was observed to be longer [3,[10][11][12][13][14][15], shorter [16,20] or unaffected [9]. When the cooling rate was increased in steps, the activation time increased [5,10] or was unaffected by cooling rate during production of materials [2,8].…”

High-throughput characterization of hydrogen storage materials using thin films on micromachined Si substrates

“…and microstructure on the nanoscale, for example, by controlled porosity [6], nanoscale grain sizes [7][8][9], or by multilayer [10,11] and nanolayer structures [12]. This can be done in an efficient way by depositing materials in the form of thin films, which avoids some drawbacks associated with bulk methods like high energy ball milling [13].…”