I think you'd want to feed the panels into a DC-DC converter. This is an example of a 1000 watt DC-DC with 48v output, 19-72v input.
https://www.ebay.com/itm/POWERNEX-MEAN- ... Swx2dYGDZv
An OpenEVSE could work, dialed-down to 6A @120v = 720 watts current draw. An inverter capable of putting-out 1kw would be able to produce that (but a 1500w inverter would be better). The inverter would have some inefficiency, so you'd want to feed it with 10% extra watts, or 792 watts (= 66 amps).
For batteries, assuming you were using deep-cycle batteries, like this, for $359:
https://theinverterstore.com/product/12 ... gJL1vD_BwE
...that battery has a 200 amp-hour capacity at 12v (when discharged over 20 hours). A 12-hour discharge rate is about as fast as you want to go, or 200 amp-hours/12 hours = 16.7 amps per battery. To add-up to 66 amps of output, you'd need 3.96 of those batteries (so... four batteries, which would work well with a 48v DC-DC converter output).
Assuming that you got four 200-amp-hour batteries, and wanted to limit discharge depth to 30% (nice), that's 60 amp-hours of discharge capacity per battery, at 12v = 720 watt-hours, x 4 batteries = 2880 watt-hrs total stored energy / 792 watts to feed the inverter, = maximum 3 hrs 38 minutes of discharging capacity (to stay within 30% discharge depth).
Looking at the panels, if you think you can capture 1.6 kw-hrs per day of power from the solar panels, and lose 10% in the DC-DC converter, plus 15% storing in the batteries (= 1224 watt-hours per day gain, on average), then you could probably charge your Leaf, at 6A 120v, for about 1 hour 32 minutes per day, on average, based on the weather; and could store up to about three days worth of sunshine (or about 18% SOC gain on the Leaf) in those four batteries.
Using 8 batteries with the 6A EVSE would let you store about 6 days of sunshine / 36% SOC, and would limit you to a 24-hour discharge rate, which is nicer if you want the batteries to last. You'd need to charge them as two 48v strings.
Caveat: I don't actually know what I'm talking about. And electricity isn't safe.