Chapter 17, Problem 38E

An inventor proposes using a SHE (standard hydrogen electrode) in a new battery for smartphones that also removes toxic carbon monoxide from the air:

$\begin{array}{l}\text{Anode}:\text{CO}\left(g\right)+{\text{H}}_2\text{O}\left(l\right)\to {\text{CO}}_2\left(g\right)+2{\text{H}}^{+}\left(aq\right)+2{\text{e}}^{-}{E}_{\text{anode}}^{°}=-0.53\text{V}\\ \underset{\_}{\text{Cathode}:2{\text{H}}^{+}\left(aq\right)+2{\text{e}}^{-}\to {\text{H}}_2\left(g\right)E_{\text{cathode}}^{°}=0\text{V}}\\ \text{Overall}:\text{CO}\left(g\right)+{\text{H}}_2\text{O}\left(l\right)\to {\text{CO}}_2\left(g\right)+{\text{H}}_2\left(g\right)E_{\text{cell}}^{°}=+0.53\text{V}\end{array}$

Would this make a good battery for smartphones? Why or why not?