# Is the Standard hydrogen electrode potential at T other than 298 K also zero?

The standard hydrogen electrode potential by conventional at 298 K is taken to be 0.00 volts.

This is what I have been taught. It talks about SHE at 298 K, so is the hydrogen electrode potential at a temperature other than 298 kelvin also defined to be zero ? If not, how do we calculate at any other temperature?

According to the definition used by IUPAC, the standard electrode potential $$E^\circ$$ of the standard hydrogen electrode is zero at all temperatures.
For solutions in protic solvents, the universal reference electrode for which, under standard conditions, the standard electrode potential ($$\ce{H+}/\ce{H2}$$) is zero at all temperatures.
The absolute electrode potential $$E^\circ(\mathrm{abs})$$, however, depends on temperature. Its value can be calculated from thermodynamic quantities (e.g. $$\Delta G^\circ$$). The recommended value for $$T=298.15\ \mathrm K$$ is $$E^\circ(\mathrm{abs})=4.44(2)\ \mathrm V$$.