On the Possibility of Other Quasibarrierless and Quasiactivationless Electrode Reactions

ON THE POSSIBILITY OF OTHER QUASIBARRIERLESS AND QUASIACTIVATIONLESS ELECTRODE REACTIONS 

So far, we have considered three electrode reactions involving heavy particles, which in all probability are quasibarrierless. Further investigation may reveal other quasibarrierless electrode processes also. 

In particular, it is possible that the formate ion decarboxylation reaction in anhydrous formic acid at anodes made of gold or some PdAu alloys may turn out to be quasibarrierless[375]. Under the conditions mentioned above, the polarization curves have a slope of 60-70 mV, which attains values between 110 and 180 mV for higher potentials. In this case, 3( )/91og C = 50-70 mV in the region where b = 60-70 mV, and 100-150 mV in the region with a higher slope. 

the nature of the dependence of electrode potential on the formate concentration also corresponds first to a barrierless reaction, and then to an ordinary electrochemical reaction. 

Barrierless reactions are also possible in other processes for which the experimentally observed value of b is close to 60 mV. 

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