Скачать или смотреть Episode #7: Batteries, capacity, C-rate, and EIS features

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.

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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].

Time stamps:
00:00 - Introduction
08:04 - Livestream starts
12:24 - Battery capacity mAh/g unit derivation
19:25 - General discussion of batteries, transference number, polarization
30:30 - Current density vs. capacity, C-rate, for batteries
37:02 - EIS charge transfer resistance and film wetness
44:48 - Bubble formation on RDE/RRDE and what to do about it
49:10 - Electrochemical double layer, bulk resistance, and Warburg from EIS
53:30 - Pine Research YouTube membership details, full EIS webinar content
55:46 - Warburg vs. CPE, units, and diffusion coefficient
1:02:58 - Electrochemical potential, HOMO/LUMO, and SEI
1:13:16 - More comments on bubbles from OER/HER
1:15:01 - Specific EIS circuit elements for PCET/deprotonization processes
1:22:59 - If EIS Nyquist plot starts at origin, is bulk resistance negligible?
1:25:51 - More battery discussion, C-rates, EVs and infrastructure, why charging/discharging quickly impacts capacity and performance
1:35:42 - What are the units for the Warburg elements?
1:42:50 - Inductive loops, why impedance decreases at low frequencies
1:55:16 - What is happening in a 3-electrode system?
2:00:08 - Impact of amorphous and porous materials on EIS
2:03:28 - Why does a battery separator allow ions to pass through but not electrons?
2:07:12 - "Duck" vs. rectangle shape during cyclic voltammetry
2:10:08 - Fuel cells, overpotential, anion exchange membrane water electrolyzers (AEMWE)
2:18:36 - Pretreating Nafion membranes
2:19:40 - CV curve increasing unexpectedly, possible diagnoses
2:24:12 - Water production in an anion exchange membrane water electrolyzer
2:27:56 - Looking for a post-Ph.D. position
2:31:35 - How do you pick the frequency range and parameters when doing EIS?