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Nanoporous PdCu alloys (NP-PdCu) with uniform PdCu alloy ligament (~6 nm) and predetermined bimetallic ratio are prepared by selectively dealloying PdCuAl ternary alloys in an alkaline solution. NP-PdCu exhibit greatly enhanced electrocatalytic activity for formic acid and methanol oxidation compared with nanoporous Pd (NP-Pd). Moreover, the structure stability of NP-PdCu is also greatly enhanced. The electrochemical surface area of NP-PdCu is well-maintained after 10,000 potential cycles fromdoi:10.1016/j.elecom.2011.04.007 fatcat:vjq7fycj4rdqbbhgtqm3pwltna