The electrochemical tests show that maximum discharge capacity, high rate dischargeability (HRD), dischargeability at low temperature and cyclic stability was improved by vacuum evaporation plating Cu, Al and Ni.
Due to variation in phases of the alloys, the maximum discharge capacity, the high rate dischargeability (HRD), and the low temperature dischargeability increase first and then decrease.
The maximum discharge capacity and high-rate dischargeability of milled alloy electrodes were obviously higher than those of the alloy electrode before milling.
The maximum discharge capacity and the high rate dischargeability (HRD) of La0.7Mg0.3Ni2.875Co0.525Mn0.1 alloy electrode both decrease with decreasing test temperature, mainly due to the slower hydrogen transfer in the bulk of the alloy and the lower electrocatalytic activity at lower temperatures.
The maximum discharge capacity and the high-rate dischargeability (HRD) of the La0.75 Mg0.25Ni3.5 alloy electrode both decrease with decreasing testing temperature, which mainly due to the slower hydrogen transfer in the bulk of the alloy and the lower electrocatalytic activity at lower temperatures.
Compared with bare hydrogen storage alloys, the fabricated composite shows larger maximum discharge capacity, 326.37 vs. 302.62 mAh g���1, and enhanced high rate dischargeability with larger discharge capacity at a current density of 3000 mA g−1, 59.01 vs. 40.88 mAh g−1.
The maximum discharge capacity is 502 mAh g−1 at 303 K when x = 0.4.
Maximum discharge capacity of the alloy electrodes changes a little with increasing x value.
The maximum discharge capacity, at 20 mA g−1, amounts to 299 mA h g−1.
Interfacially stabilized Si electrode exhibited a high capacity retention 80% of the maximum discharge capacity after 200 cycles between 0.1 and 1.5 V vs. Li/Li+.
Its maximum discharge capacity was ∼360 mA h g−1 and remained 300 mA h g−1 even after 100 cycles, and the capacity retention rate was ∼83%.
