Episode #125: Ionic conductivity in blocking and symmetric cells

This is a Livestream Q&A/Ask Us Anything for answering YOUR questions on YouTube. In this Q&A session we will answer your electrochemistry research questions LIVE, as well as any other questions related personal topics like careers, academia, industry, or life in general. We have compiled a database of all questions asked in our Ask Us Anything About Electrochemistry Livestreams, tagged by the question subject and linked with time stamps to the place in that week's Livestream. If you are interested in obtaining a copy of this database (MS Excel file), please reach out via comments here or directly to us at [email protected]. Check out https://aftermathlive.com, Pine Research's online electrochemical simulation software! Perfect for the classroom or research lab, licenses are available for simulating CV and bulk electrolysis of a variety of chemical and electrochemical reactions. Accessible on both PC and Mac! Time stamps: 00:00 - Introduction 06:00 - Livestream starts 16:21 - How can we do iR compensation in AfterMath software? 21:05 - What are some reasons why ionic conductivity would be different in blocking vs. symmetric cells? 39:36 - Do you know what the Pine Research NI interface does? We're interested in the WaveNeuro FSCV system but we don't know if we need the NI interface. 51:42 - Can you teach the Daniell cell reactions? 58:21 - In electrochemical gas sensing, how do screen-printed electrodes work without electrolyte? 1:01:13 - Please explain how pseudo reference electrodes work and what that means? 1:08:32 - How do we extract Tafel slope from CV? 1:16:42 - How can we prepare a miniaturized Ag/AgCl electrode for biomedical sensing applications? 1:23:54 - What parameters should be critically analyzed for lab-made SPEs before applying them to biosensing assays? 1:26:54 - Please explain the circuit diagram of CV. 1:29:50 - Please explain about S-shaped voltammograms of EC mechanisms. Why are forward and backward currents merged together? 1:35:02 - In the oxygen reduction reaction, what type of CV graph can we expect? Also, what is the mechanism for ORR? 1:42:49 - Can you suggest some ideas about electrochemical analyses for PEM water electrolyzers? 1:50:49 - For a reference electrode in a flooded cell, can I use Ag wire instead of Ag/AgCl? 1:57:14 - Can you explain the sign conventions and redox direction with the Nernst equation? 1:58:54 - In CV analysis for OER/HER, sometimes CV curves overlap at higher scan rates. Why does this happen?