Is an AuCl4 / Zn battery possible? (similar to CuSo4 / Zn Daniell Cell) - expense is no consideration

I have been approached by an interesting fellow who collects anything made from Gold.  

He has asked me to make him the Gold/Zinc equivalent of the Copper/Zinc Daniell Gravity Cell.  

Would this be possible using gold chloride instead of copper sulphate?


The standard electrode potential for the


Zn2+ + 2 e− ⇌ Zn (-0.76 V)


will be the same but the electrode potential for the gold is approx 0.6 volts higher than the Copper electrode in a regular Daniell cell.


[AuCl4]− + 3 e− ⇌ Au(s) + 4Cl− (0.93 V)


Any tips, insights, and pitfalls would be appreciated before I accidently do something dumb with this fellow's Gold.


