An investigationwas performed on the suitability of carbonmaterials

metallic lead and its alloys as substrates for zinc negative electrode in acid PbO

2

-Zn single flow batteries. The zinc deposition process was carried out in the medium of 1 mol·L

-1

H

2

SO

4

at room temperature. No maximum current appears on the potentiostatic current transients for the zinc deposition on lead and its alloys.With increasing overpotential

the progressive nucleation turns to be a 3D-instantaneous nucleation process for the resin-graphite composite. Hydrogen evolution on the graphite composite is effectively suppressedwith the doping of a polymer resin. The hydrogen evolution reaction on the lead is relatively weak

while on the lead alloys

it becomes serious to a certain degree. Although the exchange current density of zinc deposition and dissolution process on the graphite composite is relatively low

the zinc corrosion is weakened to a great extent. With the increase of deposition time

zinc deposits are more compact. The cyclings of zinc galvanostatic charge-discharge on the graphite composite provide more than 90% of coulombic and 80% of energy efficiencies

and exhibit superior cycling stability dur

ing the first 10 cycles.