Abstract
Nanoporous metals similar to paper in form are developed using Japanese washi paper as a template to create hierarchical porous electrodes. This method is used to create a trimodal -nanoporous Au electrode, as a well as a hierarchical NiMn electrode that achieves high electrochemical capacitance and a rapid rate of oxygen evolution.
Highlights
Advanced nanostructured electrodes are a vital component to creating environmentally friendly energy applications such as supercapacitors, batteries, and electrochemical catalyst/conversion technologies.[1,2,3,4,5,6] 3D nanostructures offering both a high electron conductivity and surface area are required for many such applications, as they allow unimpeded transfer of electrons and ions
A template material consisting of cellulosic fibers
If different pure metal powders are used in the slurry, e.g., Au and Ag, a solidsolution alloy can be created
Summary
Advanced nanostructured electrodes are a vital component to creating environmentally friendly energy applications such as supercapacitors, batteries, and electrochemical catalyst/conversion technologies.[1,2,3,4,5,6] 3D nanostructures offering both a high electron conductivity and surface area are required for many such applications, as they allow unimpeded transfer of electrons and ions. To provide a more practical perspective, a cheaper hierarchical nanoporous NiMn structure was fabricated using onestep dealloying, as shown in Figure S7 (Supporting Information).
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