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PolyPlus
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Developer of advanced battery technology based on protected lithium electrode (PLE) technology allowing for increased energy storage density

Founded in 1990
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Company type Private Public ()
Company type

Industry Group energy & power

Sector energy storage

TRL Range 4-6
TRL 1 Basic research
TRL 2 Technology formulation
TRL 3 Applied research
TRL 4 Small scale prototype
TRL 5 Large scale prototype
TRL 6 Prototype system
TRL 7 Demonstration system
TRL 8 First of a kind commercial system
TRL 9 Full commercial application
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Headquarters Berkeley, CA Berkeley, United States
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Updated by Cleantech Group on 08/17/2021

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Date Company
06/15/2012

Corning Corning

PolyPlus is working with Johnson Controls and Corning on a pilot line to make a component of lithium-water, lithium-air, and lithium-sulfur batteries.

Confirmed by Corning
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Date Partner Type
02/22/2019
SK Innovation SK Innovation
SK Innovation said it signed a joint development agreement for the development of Li metal batteries with PolyPlus Battery. SK Innovation will invest in research and development of conductive glass separators owned by PolyPlus.
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Confirmed by SK Innovation
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Date Investors Type Amount
11/28/2012 Advanced Research Projects Agency - Energy (ARPA-E) Advanced Research Projects Agency - Energy (ARPA-E) (1)
Post-money valuation of
This grant will help fund PolyPlus' development, in partnership with Johnson Controls, of an innovative water-based, lithium-sulfur battery.
 Grant $4,500,000
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