Production of AB5 materials from spent Ni-MH batteries with further tests of hydrogen storage suitability

Underlying factors of mega pressure hysteresis in cerium-rich CaCu5-type metal hydrides and effective modification strategies

“…[8][9][10][11][12][13][14][15] RE-based metal hydrides offer wide-ranging applications including Ni-MH batteries, high-density hydrogen storage, hydrogen compression, etc. 8,16,17 However, of particular concern is the mega pressure hysteresis caused by the high Ce content in the composition. 8,18,19 In detail, hysteresis, an intrinsic feature in a chemically reversible metal-hydrogen system, is dened as the pressure difference or irreversible energy losses in the isothermal de-/hydrogenation PCT curves at the same temperature.…”

Phosphide-Enhanced Hierarchical NiMoO4 Composite in Binder-Free Ni-Electrodes for High-Capacity Aqueous Rechargeable NiZn Batteries

“…The wish to develop low-cost, long-life, and safe batteries has increased with the ambition to connect intermittent solar and wind power to the grid. A response to this challenge is to develop water-based energy storage devices with high energy and power densities. − Several aqueous battery chemistries, such as Ni–Cd, NiMH, NiCo, NiFe, NiBi, and NiZn, − based on the reversible Ni-hydroxide electrode, have been extensively studied. Obviously, low-cost, high-performance, and environmentally friendly aqueous rechargeable NiZn batteries have become more attractive in recent years.…”