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Hydrogen solubility isotherms and solute susceptibility.
Hydrogen solubility isotherms and solute susceptibility. Electrode potential, ESHE, vs. bulk hydrogen fraction, xH, measured by in situ dilatometry from the length change during cyclic voltammetry. Different scan rates as indicated. (A) np Pd and (B) np Pd-Au. (C) Details for solutions that are dilute in H plotted as hydrogen chemical potential μH vs. xH. Colored symbols (overlapping), experiment; white dashed lines, fits. (D) Solute susceptibility parameter χ vs. xH. Included in A is an isotherm determined by current integration after potential jumps (even slower charging) in our earlier work (29). Shan Shi et al. PNAS doi: /pnas ©2018 by National Academy of Sciences
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