Not Solid Yet; Solid State Batteries Have 50% Greater Energy Density, More Range. Lower Cost, Lighter, & Faster Charge Time But Battery Packs For Cars Are Far From Ready Even With Big Promise

BATTERY TECHNOLOGY 

SITUATION:
Solid-state batteries promise to offer greater energy density compared to lithium batteries.
Not yet being used in the production of mass-market cars ’til at least 2023;
Companies are mostly working on solid state batteries at the cell level.
Sold State batteries are showcase for the technology—no matter.
And are expected to be significantly higher price than lithium-ion.
No company has managed to transition from hand-made samples to date.
Need to scale up both cell size & production volume to be practical to power a vehicle.

SIGNIFICANCE:
Solid Power uses sulfide-based cells & promises that its solid electrolyte is not flammable.
Says their batteries deliver more than 50 percent more energy density.
Produced by using a manufacturing infrastructure similar to lithium-ion battery production.
Do away with liquid electrolyte that makes conventional lithium-ion batteries heavy & dangerous at high temperatures.
Batteries can be lighter, with greater energy density, more range, lower cost, and faster recharge.
Building a solid-state battery that will function at the rates and temperatures needed for real-world applications is hard

SOLUTIONS:
By using a ceramic solid-state separator Solid Power seem to have succeeded.
Claims Solid-state and metal-air batteries, are safer.
And demonstrate higher performance than lithium-ion batteries.
Ford & BMW led a $130M Series B investment round in solid-state battery startup, Solid Power.
Key difference between lithium-ion batteries & solid-state batteries is latter doesn’t use liquid electrolytes.
Solid-state batteries have greater energy density, enabling EVs to cover larger range at lower cost.
However, more expensive now and in the early development stage,
Solid State is getting good results from liquid-free 22-layer sulfide-based cells.

The Promise of the Solid-State Lithium-Metal Battery  [See posting link below for details]

  1. Energy density
  2. Power density/fast charge
  3. Cycle life:
  4. Safety:
  5. Cost:

SEZ:
“It has been made clear the batteries are still in the development stage, with results from testing small prototypes, not full packs but there is much work ahead of us,”– Chief technology officer Tim Holme

Re 22 volt sulfide-based cells:.  “We hope to see commercially viable production, meaning batteries in cars that won’t cost an arm and a leg, around 2026,” – Solid Power CEO Doug Campbell

SOURCES:
1) Solid Power – info@solidpowerbattery.com
press@solidpowerbattery.com

2) The Eternal Promise of Solid-State Batteries – https://www.autoweek.com/news/green-cars/a35367888/the-eternal-promise-of-solid-state-batteries/

3) QuantumScape’s research on solid state lithium metal batteries for electric cars. –https://www.quantumscape.com/blog/solid-state-battery-landscape/

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