The Metal tin (Sn) cathode shows the best conversion and selectivity among selected metal and nonmetal graphite (C). As for the anode, metal magnesium (Mg) provides a lower resistance and leads to better performance than aluminum (Al). The C anode was chosen to find a non-sacrificial electrode while, interestingly, nitrobenzene is not converted at all even though the C anode provides a resistance that is lower than Mg and keeps decreasing during electrolysis. This consequence implies that the C anode is more susceptible to oxidation than expected and the undetected products hinder the reduction of nitrobenzene. Moreover, the Sn cathode gradually bends during the reaction with Al and C, which is presumably due to the overgrowth of SEI. The solvent is a crucial factor that influences the conversion of substrates in electrochemistry because it is the mediate of matter and charge transport and is related to solvent effects and electric double-layer models . Some common solvents do not dissolve LiBr (Supplementary information, Table 6, Entry 11-15), so no free charge will be generated in the liquid phase.