Hellow guys, Welcome to my website, and you are watching Episode #50: THIS is what EIS looks like for diffusion-controlled systems. and this vIdeo is uploaded by Pine Research Instrumentation, Inc. at 2024-04-27T00:19:38-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
| Name | Episode #50: THIS is what EIS looks like for diffusion-controlled systems |
| Video Uploader | Video From Pine Research Instrumentation, Inc. |
| Upload Date | This Video Uploaded At 27-04-2024 07:19:38 |
| Video Discription | 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 10:41 - Where does the 'S' shape in a CV come from? 16:52 - If my experiment is diffusion-controlled, what will the EIS data look like and what is the best circuit fit model to use? 22:50 - Regarding electrochemical kinetics, the Butler-Volmer equation is developed for one reactant giving one product, but what if we have several products from one reactant? 27:39 - How does pH affect the potential I measure? 40:42 - In HER water splitting, which part of the Tafel plot should be considered to measure the Tafel slope? 50:48 - During water splitting, how does the potential change with pH? 56:44 - For EIS of lithium-ion batteries, there are often several semicircles on the Nyquist plot. Which ones are ascribed to the SEI, anode, and cathode? 1:02:27 - Could you still use Tafel plots to measure relative corrosion rates on a material with/without a coating, even if your experiment wasn't appropriate for measuring purely kinetic current? 1:07:26 - Is it OK if during GCD we charge the supercapacitor fast and discharge it slowly? Is it mandatory to keep the ratio of charging and discharging current as 1:1? 1:11:13 - More discussion about the Nernst equation, pH and reference electrodes shifting potentials 1:17:55 - Does a potentiostat know how much potential it applies, or will it "read" the potential measured between the RE and WE? 1:20:25 - What are possible applications for vanadium redox flow batteries? 1:23:33 - In a three electrode cell, what are fundamental reasons why the reference electrode should be very small and close to the working electrode? 1:26:26 - My leakless reference electrode shows an offset of 0.25 V, is this a problem? Discussion about leakless reference electrodes 1:33:28 - Discussion about reference electrode position in a lithium-ion battery 1:40:07 - What are the mechanisms behind reversible and irreversible self-discharge in a lithium-ion battery? 1:44:03 - Why might I get the opposite trend from the Nernst equation with changing pH and measured potential? I am testing a Ni II-III redox and lowering the pH to acidic conditions 1:47:49 - Can I use more AC perturbation than 10 mV to characterize the initial water uptake kinetics for a very thick coating of 500 µm? With 10 mV, I am getting a lot of noise. Will 50 mV work? 1:56:14 - How can I reduce noise in a differential pulse voltammogram? 2:01:55 - Why don't you get good EIS data if the resistance is too high? 2:05:45 - I am trying to measure the conductivity of my membrane with a 4-point probe system. Should I perform GEIS, PEIS, or a DC method? 2:07:42 - I am doing EIS on anodized aluminum with 5 time constants. Should I get 5 different semicircles, or will there only be one or two while circuit fitting? |
| Category | Science & Technology |
| Tags | Pine Research Instrumentation | Pine Research | Electrochemistry | Echem | Electrochemical impedance spectroscopy | Ask us anything about electrochemistry | EIS | reference electrode | reference potential | redox | shunt | CV | cyclic voltammetry | capacitor | EDLC | potentiostat | OCP | OCV | GCD | charge/discharge | batteries | simulation | electrochemical simulation | echem simulation | circuit fit |
