fig3
![Recent advances in nanoscale engineering of Pd-based electrocatalysts for selective CO<sub>2</sub> electroreduction to formic acid/formate](https://image.oaes.cc/f25e5c85-9815-4f5d-b9c5-2b9f75878984/em4088.fig.3.jpg)
Figure 3. (A) Schematic diagram of switchable reaction pathways for CO2 electroreduction caused by electrochemically-driven active-phase transformations of Pd nanoparticles[39]. Reprinted with permission. Copyright 2017, Springer[39]. (B) Faraday efficiency and the Tafel slope of formate, H2 and CO at different potentials[39]. Reprinted with permission. Copyright 2017, Springer[39].