TSLAQ: EV battery energy density not changed in decades. U.S. Dept Energy: Energy Density of Lithium-ion Batteries Increased by More than Eight Times

firsttruck

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U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, FOTW (Fact of the Week) #1234, April 18, 2022:
Volumetric Energy Density of Lithium-ion Batteries Increased by More than Eight Times Between 2008 and 2020
https://www.energy.gov/eere/vehicle...lumetric-energy-density-lithium-ion-batteries

Volumetric energy density refers to the amount of energy that can be contained within a given volume. Increasing the volumetric energy density of batteries allows electric vehicles (EVs) to travel further without increasing the size of the battery pack. Conversely, it can allow an EV to travel the same distance with a smaller battery pack, thus saving space, weight, and manufacturing costs. Given the enormous benefit of increasing the energy density of batteries for EVs, there has been heavy investment in battery development by the Department of Energy and private industry that has yielded impressive gains. In 2008, lithium-ion batteries had a volumetric energy density of 55 watt-hours per liter; by 2020, that had increased to 450 watt-hours per liter.

View attachment 43147
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Data Reveals Tremendous Growth In Volumetric Energy Density Of EV Batteries
Since 2008, the amount of energy stored in a volume unit has increased multiple times.
Apr 27, 2022
By: Mark Kane
https://insideevs.com/news/581729/volumetric-energy-density-ev-batteries-growth/

.....
the Department of Energy’s (DOE) Vehicle Technologies Office highlights how the volumetric energy density of lithium-ion batteries (industry average for battery packs) changed between 2008 and 2020.

The progress is tremendous, as in 2008 the number was only 55 Wh/Liter, while in 2020 it was 450 Wh/l, according to the study. That's an 8-fold increase in 12 years.

Progress (on the pack level):

2008: 55 Wh/l
2010: 90 Wh/l
2013: 140 Wh/l
2017: 250 Wh/l
2020: 450 Wh/l

A lot depends on lithium-ion battery chemistry, as there is a very wide difference between particular solutions - up to an order of magnitude.
We often focus on the gravimetric energy density to make electric vehicles lighter and thus improve efficiency and range. However, the volumetric energy density is also very important for EVs, to make the battery smaller and fit inside the vehicle, increasing space for other elements and the passenger/cargo compartment.

CATL, the world's largest EV battery manufacturer, announced recently that its latest cell-to-pack (CTP) 3.0 battery systems will have a volumetric energy density of over 290 Wh/l in the case of LFP chemistry and over 450 Wh/l in the case of NCM chemistry.

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Lithium-ion batteries break energy density record
21 Apr 2023
By Isabelle Dumé
https://physicsworld.com/a/lithium-ion-batteries-break-energy-density-record/


View attachment 43150
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“The anode electrode employs ultrathin metal lithium incorporated using a separator coating technique, which addresses the annoying issue of reversible deposition of ultrathin lithium of large surface capacity,” explains first author Quan Li.

The devices boast a gravimetric energy density of 711.3 Wh/kg and a volumetric energy density of 1653.65 Wh/L, both of which are the highest in rechargeable lithium batteries based on an intercalation-type cathode, Li tells Physics World.

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g7bupw9z

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U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, FOTW (Fact of the Week) #1234, April 18, 2022:
Volumetric Energy Density of Lithium-ion Batteries Increased by More than Eight Times Between 2008 and 2020
https://www.energy.gov/eere/vehicle...lumetric-energy-density-lithium-ion-batteries

Volumetric energy density refers to the amount of energy that can be contained within a given volume. Increasing the volumetric energy density of batteries allows electric vehicles (EVs) to travel further without increasing the size of the battery pack. Conversely, it can allow an EV to travel the same distance with a smaller battery pack, thus saving space, weight, and manufacturing costs. Given the enormous benefit of increasing the energy density of batteries for EVs, there has been heavy investment in battery development by the Department of Energy and private industry that has yielded impressive gains. In 2008, lithium-ion batteries had a volumetric energy density of 55 watt-hours per liter; by 2020, that had increased to 450 watt-hours per liter.

View attachment 43147
----------------------------------------


Data Reveals Tremendous Growth In Volumetric Energy Density Of EV Batteries
Since 2008, the amount of energy stored in a volume unit has increased multiple times.
Apr 27, 2022
By: Mark Kane
https://insideevs.com/news/581729/volumetric-energy-density-ev-batteries-growth/

.....
the Department of Energy’s (DOE) Vehicle Technologies Office highlights how the volumetric energy density of lithium-ion batteries (industry average for battery packs) changed between 2008 and 2020.

The progress is tremendous, as in 2008 the number was only 55 Wh/Liter, while in 2020 it was 450 Wh/l, according to the study. That's an 8-fold increase in 12 years.

Progress (on the pack level):

2008: 55 Wh/l
2010: 90 Wh/l
2013: 140 Wh/l
2017: 250 Wh/l
2020: 450 Wh/l

A lot depends on lithium-ion battery chemistry, as there is a very wide difference between particular solutions - up to an order of magnitude.
We often focus on the gravimetric energy density to make electric vehicles lighter and thus improve efficiency and range. However, the volumetric energy density is also very important for EVs, to make the battery smaller and fit inside the vehicle, increasing space for other elements and the passenger/cargo compartment.

CATL, the world's largest EV battery manufacturer, announced recently that its latest cell-to-pack (CTP) 3.0 battery systems will have a volumetric energy density of over 290 Wh/l in the case of LFP chemistry and over 450 Wh/l in the case of NCM chemistry.

----------------------------------------

Lithium-ion batteries break energy density record
21 Apr 2023
By Isabelle Dumé
https://physicsworld.com/a/lithium-ion-batteries-break-energy-density-record/


View attachment 43150
.....
“The anode electrode employs ultrathin metal lithium incorporated using a separator coating technique, which addresses the annoying issue of reversible deposition of ultrathin lithium of large surface capacity,” explains first author Quan Li.

The devices boast a gravimetric energy density of 711.3 Wh/kg and a volumetric energy density of 1653.65 Wh/L, both of which are the highest in rechargeable lithium batteries based on an intercalation-type cathode, Li tells Physics World.

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Wow, firsttruck, this is a fantastic breakdown of the advancements in lithium-ion battery technology! The eight-fold increase in volumetric energy density between 2008 and 2020 is super impressive. No wonder we're seeing longer range and more spacious EVs these days.

The news about the record-breaking battery with a density of over 1600 Wh/L is mind-blowing! It's exciting to see the research pushing the boundaries and paving the way for even more efficient and powerful electric vehicles in the future.

Thanks for sharing these informative resources – this is exactly the kind of technical post that keeps this forum interesting and educational!
 
 




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