US Gov't report on the use of Ni-Fe cells in vehicles

[Iron Bran]

Why the hate? Do you need a hug?

Are you an aggressive driver? I bet that you have a lot of road rage.

You may have seen that many people are here for the constructive sharing of information.

You put a lot of effort into flaming other peoples comments, and offer very little (if any) constructive help.

You are welcome to join in the conversation, but kindly realize we are all people who are here to learn from one another.

Your negative attitude has, without a doubt, scared away a large number of people who would have otherwise posted legitimate questions.

NiFe is a pretty poor choice for EV applications because of the low energy density and high internal resistances. Sounds like another complete waste of tax payer money which they already know the answer too.

For the same amount of initial cost per Kwh and weight there are commercial LFP that will get you roughly 5 times the range, and not limited to such high internal resistance which means much higher charge and discharge rates. LFP batteries have around 200 wh/kg, vs 40 wh/kg for Nife. Watt hour cost are roughly the same at $600 to $800/Kwh. The newer LFP batteries made by A123 Systems have a 10,000 cycle life which will outlive the vehicle.

Sorry but this is just a silly waste of money and resources, NiFe doe snot stand a chance in the EV market as LFP just runs circles around them.

[Sunking]

NiFe is a pretty poor choice for EV applications because of the low energy density and high internal resistances. Sounds like another complete waste of tax payer money which they already know the answer too.

For the same amount of initial cost per Kwh and weight there are commercial LFP that will get you roughly 5 times the range, and not limited to such high internal resistance which means much higher charge and discharge rates. LFP batteries have around 200 wh/kg, vs 40 wh/kg for Nife. Watt hour cost are roughly the same at $600 to $800/Kwh. The newer LFP batteries made by A123 Systems have a 10,000 cycle life which will outlive the vehicle.

Sorry but this is just a silly waste of money and resources, NiFe doe snot stand a chance in the EV market as LFP just runs circles around them.

[Iron Bran]

Several nickel/iron (Ni/Fe) batteries were designed and procured from Eagle-Picher
Industries (EPI) for evaluation and use in an advanced dual shaft electric propulsion (DSEP) vehicle developed by Eaton Corporation. As part this program, two individual 5-cell Ni/Fe modules and a 140-cell (28-module) battery pack were delivered to Argonne in March 1986 for evaluation. The objective of this activity was to characterize the performance of the Eaton/EPI Ni/Fe battery technology for DSEP applications.

Performance characterization tests were conducted on the two modules and life testing performed on the battery pack. Module performance testing was completed in February 1987. Each module retained ~90% of its initial 180-Ah capacity after completing about 215 cycles of operation (--163Ah/970 Wh).

Life characterization tests for the 28-kWh DSEP battery pack were conducted with driving profile discharges. A 1377-s power profile that represented the battery load in a DSEP vehicle undergoing a Federal Urban Driving Schedule (FUDS) was used. After the battery pack accumulated 502 cycles in October 1987, testing Was suspended for three months. Testing was resumed in January 1988 with the same driving profile discharge.

[Iron Bran]

Please see attached.

Ni-Fe and Cars -- Govt Study.pdf