Thesis - Oztek_Muzaffer_T_200508_MA

Table 5. Percent hydrogen uptake with AuPd and Pt coating on LaNi 5 .
Weight % H
Mole
% Al
Coating type and time,
min
5 atm H 2 5 atm H 2 in
50% (v/v) H 2 -He
3.3 atm H 2 in
50% (v/v) H 2 -He
12 No coating 0.81 0.59 -
12 AuPd, 4 0.91 0.64 0.33
12 AuPd, 8 0.84 0.79 0.43
12 Pt, 2 0.83 - 0.33
0.77 No coating 1.03 0.83 -
0.77 Pt, 2 1.00 1.01 0.55
Figure 31 shows percent hydrogen curves for samples with AuPd coating on
12.00% Al where the coating is shown to fail to increase the hydrogen absorption rate
and capacity.
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