Kinetics of Hydrogen Evolution on Copper Electrode Involving Organic Acids as Proton Donors

<table>Peak current densities versus <svg height="17.125" id="M85" style="vertical-align:-2.457pt" version="1.1" viewbox="0 0 22.15 17.125" width="22.15" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.017,-0,0,-.017,13.05,14)"><path d="M509 373q0 -52 -42.5 -118.5t-124.5 -159.5l-94 -107h-27q-22 209 -78 342q-21 48 -41 48q-18 0 -63 -62l-22 21q77 111 125 111q30 0 52 -21.5t38 -75.5q37 -130 52 -285q48 62 74.5 99.5t53.5 87t27 76.5q0 43 -17 60q-5 5 -5 15q0 17 12.5 30.5t28.5 13.5
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</svg> obtained at different pH for 0.04 M malic and tartaric acid solutions.</table>

International Journal of Electrochemistry

fig4

Figure 4

Figure 4: Kinetics of Hydrogen Evolution on Copper Electrode Involving Organic Acids as Proton Donors 