Batteries of the Future (Full) | MconneX | BrownBag Learning
58:32Brought to you by mconnex (http://www.engin.umich.edu/alumni) about the series: what advancements in batteries are being made and how can these improvements impact the consumer market and the environ ..Batteries of the Future: Ch. 1 | MconneX | BrownBag Learning
04:2Brought to you by mconnex (http://www.engin.umich.edu/alumni) about the series: what advancements in batteries are being made and how can these improvements impact the consumer market and the environ ..Batteries of the Future: Ch. 2 | MconneX | BrownBag Learning
08:18Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter two: why electric vehicles? - what's the rationale for electric vehicles? this chapter explains a "well to wheels analysis" of a ..Batteries of the Future: Ch. 3 | MconneX | BrownBag Learning
05:30Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter three: challenges - this chapter discusses the challenges that need to be tackled to make electric vehicles more accessible to th ..Batteries of the Future: Ch. 4 | MconneX | BrownBag Learning
05:45Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter four: battery fundamentals - a battery converts chemical energy into electrical energy and manifests that into voltage across the ..Batteries of the Future: Ch. 5 | MconneX | BrownBag Learning
03:49Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter five: li-ion batteries 101 - how does a lithium ion battery work? this chapter explains the motion within a lithium ion during wh ..Batteries of the Future: Ch. 6 | MconneX | BrownBag Learning
03:44Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter six: power vs. energy - this chapter explores the regone plot, which compares net energy (the watt hours stored in a battery) ve ..Batteries of the Future: Ch. 7 | MconneX | BrownBag Learning
05:40Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter seven: battery degradation - the issue of battery degradation must be resolved to increase the lifetime of batteries and make ele ..Batteries of the Future: Ch. 8 | MconneX | BrownBag Learning
11:0Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter eight: techniques for battery r&d - the first publicized battery was introduced in 1800, yet since that time there have been few ..Batteries of the Future: Ch. 9 | MconneX | BrownBag Learning
11:32Brought to you by mconnex (http://www.engin.umich.edu/alumni) chapter nine: what does the battery of the future look like? it should be smaller, lighter, less expensive and last longer, but many poss ..In these nine chapters, Don Siegel discusses the challenges and opportunities in developing battery-operated products.
Do you see batteries advancing rapidly enough to make Electric Vehicles a real possibility?
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What advancements in batteries are being made and how can these improvements impact the consumer market and the environment? Would a renaissance in electric vehicles have an impact on emissions, or would it simply displace the emissions from the back of the vehicles to the power plants in our backyard? And what are the mechanics behind how a battery works?
Don Siegel, an assistant professor of Mechanical Engineering at the University of Michigan, conducts this BrownBag Learning series where he discusses the challenges in developing consumer products that rely on batteries and the opportunities to improve them.
ABOUT THE PROFESSOR: Don Siegel is an assistant professor of Mechanical Engineering at the University of Michigan College of Engineering. His primary research interests include the development of high-capacity materials and systems for energy storage applications; computational materials science; nanoscale chemistry and its impact on the mechanical properties of materials; thermodynamics and kinetics of phase transformations; multi-scale modeling; and integrated computational materials engineering.
Siegel teaches Atomistic Computer Modeling of Materials at the University of Michigan, and works in the Energy Storage and Materials Simulation Lab.
Dear Sir,
I am Kuldeep, a lithium-ion battery engineer, recently finished my Master’s in Chemical Engineering and my topic of thesis was AC Impedance: A tool for the interrogation of lithium and lithium-ion battery cathodes. I must say you have done an excellent work, by explaining the SEI film formation mechanism in your videos. I have also observed that with the increase in the storage time and number of electron discharge the SEI film plays a key role in increase in the internal and the polarization resistance. I am very interested in your work.
The issue of Battery technology is understated. Present battery technology would require a physical battery 50 times larger than present gasoline tanks. We have a long way to go in battery technology before these are practical.
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When selecting a baertty, manufacturers will often list an amount of “cells,” where each cell has a certain capacity; thus a 9 cell has 50% more capacity than an equal model 6-cell baertty. That is useful for comparing directly, but the story is more complex if you wanted to compare different batteries on different laptops. Batteries have a voltage rating (V) and milli-Amp hours (mAH), which, if multiplied together, give you milliwatt hours. For example, a 14.8 V baertty with 4460 mAH gives you 66,000 milliwatt hours (66 watt-hours). You can compare batteries this way, but also keep in mind that different laptops have very different power requirements that vary based on the components and how well the operating system manages power consumption. Typically, bigger, heavier batteries will give you a higher watt-hour rating. A 6-cell baertty may be the same form factor as a 9-cell, but the 6-cell will weigh less since there’s less chemical in it to hold onto that charge.If you are a mobile warrior, you will want the most cells and/or most watt-hours you can get into your model so you can go 5 or 6 hours without a recharge. It is so painful to run out of power before you are ready.
Eric says: September 15, 2012 at 2:15 pm |
Great videos! Well made, informative. When is your next wave of videos?