Characterizing CO2 Reduction Catalysts on Gas Diffusion Electrodes: Comparing Activity, Selectivity, and Stability of Transition Metal Catalysts

Continued advancements in the electrochemical reduction of CO 2 (CO 2RR) have emphasized that reactivity,selectivity, and stability are not explicit material properties butcombined effects of the catalyst, double-layer, reaction environ-<br/>ment, and system configuration. These realizations have steadily built upon the foundational work...

On the influence of the sputtering in determining the resolution of a scanning ion microscope

The determination of the quality of an imaging system is not an easy task for, in general, at least three parameters, strictly interdependent, concur in defining it: resolution, contrast, and signal-to-noise ratio. The definition of resolution itself in scanning microscopy is elusive and the case of scanning ion microscopy is complicated by the...

Hydrogen mediated transport of Sn to Ru film surface

The authors report on the interaction of atomic hydrogen with Sn and thin Ru film at room temperature. The study is done using a combination of photoelectron and low energy ion scattering spectroscopies as well as scanning electron microscopy. The adsorption of hydrogen on a Sn surface leads to the formation of stannane (SnH4), which...

Sputtering limits versus signal-to-noise limits in the observation of Sn balls in a Ga+ microscope

In principle, a scanning ion microscope can produce smaller probe sizes than a scanning electron microscope because the diffraction contribution is smaller. However, the imaging resolution is often severely limited by the sputtering damage. In this article, an experimental procedure to establish the limit of a focused ion beam system for imaging...