首页|A Nb-doped metal hydride electrode with overcharge resistance and wide temperature performance for aqueous rechargeable batteries
A Nb-doped metal hydride electrode with overcharge resistance and wide temperature performance for aqueous rechargeable batteries
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NSTL
Elsevier
Metal hydride electrodes have been widely used for aqueous rechargeable batteries with good wide temperature performance compared to lithium-ion batteries. For the first time, the design and application of Nb-doped metal hydride electrode with excellent overcharge resistance in this study for La0.46Ce0.42xPr0.03Nd0.08Zr0.02NbxNi4.41Mn0.36Al0.28 (x = 0, 0.05 or 0.1). The ratio of capacity retention after the 100th cycle for charging 420 and 360 mAh g-1 increases from 86.99% (x = 0) to 99.93% (x = 0.1) at 25 degrees C, and from 83.95% (x = 0) to 99.28% for (x = 0.1) at 50 degrees C. Furthermore, the capacity of simulated wide temperature and overcharge experiment at -20 degrees C increases from 86.3 mAh g-1 (x = 0) to 217.8 mAh g-1 (x = 0.1) after the 100th cycle at 50 degrees C, due to the increase of overcharge resistance. This material makes it a promising candidate as electrode material for wide temperature applications.
NSTL
Elsevier
