4 ms·

LFP is also a more stable chemistry which makes them safer but also it has more than double the cycle life and can be charged to 100% while still keeping that

LFP is also a more stable chemistry which makes them safer but also it has more than double the cycle life and can be charged to 100% while still keeping that long cycle life. No need to choose to charge to 80-90% for daily use vs 100% for long distance, Tesla recommends charging the LFP to 100% all the time. LFP's where getting ridiculously cheap recently, you can get 19" rack mount batteries with built in BMS for less than $300 / kWh to your door. I think most UPS are going to move over to LFP, they will be 20 year batteries in controlled environments. I put some 12v replacements in my RV getting 4X the capacity of my lead acid at half the weight for about 3x the cost but the batteries will last 10+ years. The main downside is a lower energy density than NMC which seems to be getting better I believe its about 20% less kWh/kg at this point. No nickel or cobalt is another advantage, iron is plentiful.

cogman10 4y ago
> No nickel or cobalt is another advantage, iron in plentiful. Nickel is a problem but you might be surprised to know that cobalt is fairly plentiful. The issue is it doesn't have a whole lot of industry usage outside of batteries. That's why it's a human rights problem. Instead of mining it locally we use small time mining operations with cheap (often child) labor. In other words, the amounts needed to meet global demand are below the demand needed to setup industrial cobalt mining operations. This is why iron phosphate are both great key materials. Both are highly plentiful AND highly useful outside of battery production (thus, already have industrial mining/recycling systems setup) There was recently discussion about opening old cobalt mines in idaho (my home state). [1] [1] https://www.mining-technology.com/projects/idaho-cobalt-project/ https://www.mining-technology.com/projects/idaho-cobalt-proj...
- SigmundA 4y ago
  Nickel is more abundant than cobalt in the earths crust and most cobalt comes as a byproduct of nickel or copper mining: https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth%27s_crust https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth... https://www.globalenergymetals.com/cobalt/cobalt-supply/ https://www.globalenergymetals.com/cobalt/cobalt-supply/

cogman10 4y ago

> No nickel or cobalt is another advantage, iron in plentiful. Nickel is a problem but you might be surprised to know that cobalt is fairly plentiful. The issue is it doesn't have a whole lot of industry usage outside of batteries. That's why it's a human rights problem. Instead of mining it locally we use small time mining operations with cheap (often child) labor. In other words, the amounts needed to meet global demand are below the demand needed to setup industrial cobalt mining operations. This is why iron phosphate are both great key materials. Both are highly plentiful AND highly useful outside of battery production (thus, already have industrial mining/recycling systems setup) There was recently discussion about opening old cobalt mines in idaho (my home state). [1] [1] https://www.mining-technology.com/projects/idaho-cobalt-project/ https://www.mining-technology.com/projects/idaho-cobalt-proj...

SigmundA 4y ago
Nickel is more abundant than cobalt in the earths crust and most cobalt comes as a byproduct of nickel or copper mining: https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth%27s_crust https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth... https://www.globalenergymetals.com/cobalt/cobalt-supply/ https://www.globalenergymetals.com/cobalt/cobalt-supply/