Galvanostatic loading

Fig. 4. Time evolution of (i) current, (ii) electrode potential (with respect to Hg/HgO electrode) and (iii) transmission (at 635 nm) of Pd (15 nm) capped Y (300 nm) in 1 M KOH during galvanostatic loading experiment. The vertical lines (dash dot) indicate the equilibrium potential C/eq (Kooij et al., 1999).

Fig. 10. Optical transmittance (i) and reflectance (ii) spectra of a Pd (15 nm) capped Y (300) film as a function of hydrogen concentration during the second galvanostatic loading from the dihydride to trihydride. The corresponding contours are plotted in the lower part of the graphs (Kooij et al., 1999).

Fig. 36. Initial galvanostatic loading in 5 M NaOH of a Sm (67 nm) capped Pd (15 nm) film (von Rottkay...

Fig. 36 shows the time evolution of the electrode potential and transmittance during the initial galvanostatic loading of a Pd (15 nm) capped Sm (67 nm) film hydrogenated via electrochemical loading in 5 M NaOH (von Rottkay et al., 1999a). Two plateaus were observed, one at —690 mV and another one at —820 mV, after which the potential was observed to drop... 

Fig. 88. (i) Optical transmittance at 1.96 eV (solid lines obtained using continuous galvanostatic loading and open circles obtained from GIFT) and (ii) resistivity (obtained from GIFT measurements and corrected for Pd over layer) as a function of hydrogen concentration in Pd (15 nm) capped Y (300 nm) films, (iii) Pressure composition isotherms obtained from GIFF for the same film (Kooij et al., 2000). 

Fig. 7.24 The behaviour of voltage with time under galvanostatic load (switching-on and switching-ofF behaviour) of a cell blocking the ions. Contact resistances are neglected. Note that, to better approximation, the resistances have to be taken as dependent on concentration and, hence, on time and position (see below) [431].

Anodes for boilers can be tested by such methods. Good-quality magnesium anodes have a mass loss rate per unit area < 30 g m d", corresponding to a current yield of >18% under galvanostatic anode loading of 50 /xA cm" in 10 M NaCl at 60°C. In 10 M NaCl at 60°C, the potential should not be more positive than t/jj = -0.9 V for the same polarization conditions [27],... 

Figure 8. Behavior of modified carbon-type materials in the course of galvanostatic cycling, current load 30 mA/g.

Lee, J., Seo, J., Han, K., and Kim, H. Preparation of low Pt loading electrodes on Nation (Na+)-bonded carbon layer with galvanostatic pulses for PEMFC application. Journal of Power Sources 2006 163 349-356. 

Figure 11-19. Ifemporal instabilities of the Ag/AgI interface under anodic load and galvanostatic conditions. T= 260 °C. This plot represents a) the periodic voltage drop across the interface and h) the change in coordinate of the pulsating receding interface [J. Janek, S. Majoni (1994)).

Figure 22 Typical chronopotentiometric profile of a graphite (4% PVDF) electrode and Li counter electrode loaded with methyl formate-LiAsF61 M solution under C02 (6 atm), galvanostatic operation C/33 h, 0.5 mA/cm2 [83]. (With copyright from The Electrochemical Society Inc.)... 

Figure 23.5 Galvanostatic insertion-deinsertion of lithium in a composite constituted from hard carbon from viscose coated by a pyrocarbon film. Current load of 20mA/g. (Adapted from Ref. [22].)...

Fig. 5. Galvanostatic charge/discharge curve at 100 mA g current load of a capacitor built with a commercial activated carbon in 6 mol L ...

Fig. 35 shows two thermoprogrammed desorption (TPD) curves obtained with the AC material galvanostatically charged with difRa nt loads in 6 mol L KOH at-500 mA g [127], In one experiment, the charging time is limited to 15 minutes for only charging the... 

Figure 13. Typical polarization and relaxation transients of catalyst potential, (Fwr-// ), and ethylene combustion reaction rate, r, on Ir02/YSZ catalyst. Galvanostatic anodic polarization with / = 10 pA during 100 min. (a), (b), (c) and (d) designate the subsequent transient steps. Catalyst loading 77 pg IrCh. Feed composition at pm = 100 kPa PC2H4 = 12.5 Pa, - 1.25 kPa, balance helium. Flow rate 200 mL min" STP 7 =375°C. Reprinted from J. Electroanal. Chem., Q. F6ti, V. Stankovii, I. BolzoneUa, and Ch. Comninel-lis. Transient Behavior of Electrochemical Promotion of Gas-Phase Catalytic Reactions, (2002), in press, with permission from Elsevier Science,...

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