erik.calco
Solar Badger
While I love, use and only recommend LiFePO4 for in-home PV storage due to its safety/stability, the winner in grid storage is...
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NMC (nickel manganese cobalt oxide) in Li-ion:
The Future
(source: SolarPRO, December 2018)According to the most recent edition of the US Energy Storage Monitor (see Resources), lithium-ion (Li-ion) batteries are by far the dominant energy storage technology in today’s gridinteractive applications. Continuing a trend that dates back to Q4 2014, Li-ion deployments accounted for 94.2% of the energy storage market in Q2 2017.
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Li-ion batteries provide excellent energy and power density; on the other, they present potential issues with chemical and thermal stability.
NMC (nickel manganese cobalt oxide) in Li-ion:
Yole Développement predicts that NMC materials will account for more than half of the global cathode market by 2022.
The Future
According to GTM Research, flow batteries accounted for just 5% of the US energy storage market in Q2 2017.
Because only a fraction of the electrolyte volume is in the battery cell stack at any one time, the shortcircuit potential of a flow battery is negligible, typically posing no danger to equipment or personnel. Flow batteries also do not present a thermal runaway hazard, and the electrolyte is generally not flammable. Some flow batteries do not even require auxiliary cooling systems because the liquid electrolyte itself regulates temperatures inside the battery cell stack.
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