A parallel plate capacitor (of capacity C) is charged using a battery of potential V. It is disconnected from the battery and the plates of the capacitor are moved away from each other. Now it is reconnected to the same battery. Then

After charging the plates are moved away, in this case the charge on the plates will remain the same.

Also the electric field between the plates.

When the distance between the plates is increased the potential difference across the plates will be increased( Since V=Ed)

Since the capacitor is having higher potential the charge will flow from capacitor to the battery.