Electrochemically Generated Nanobubbles: Invariance of the Current with Respect to Electrode Size and Potential

The Journal of Physical Chemistry Letters
Esteban D GadeaDamian A Scherlis

Abstract

Gas-producing electrochemical reactions are key to energy conversion and generation technologies. Bubble formation dramatically decreases gas-production rates on nanoelectrodes, by confining the reaction to the electrode boundary. This results in the collapse of the current to a stationary value independent of the potential. Startlingly, these residual currents also appear to be insensitive to the nanoelectrode diameter in the 5 to 500 nm range. These results are counterintuitive, as it may be expected that the current be proportional to the circumference of the electrode, i.e., the length of the three-phase line where the reaction occurs. Here, we use molecular simulations and a kinetic model to elucidate the origin of current insensitivity with respect to the potential and establish its relationship to the size of nanoelectrodes. We provide critical insights for the design and operation of nanoscale electrochemical devices and demonstrate that nanoelectrode arrays maximize conversion rates compared to macroscopic electrodes with same total area.

References

Apr 14, 2005·Journal of the American Chemical Society·Berit HinnemannJens K Nørskov
Oct 30, 2008·The Journal of Physical Chemistry. B·Valeria Molinero, Emily B Moore
May 14, 2010·The Journal of Physical Chemistry. B·Liam C Jacobson, Valeria Molinero
Nov 11, 2010·Chemical Reviews·Michael G WalterNathan S Lewis
Feb 19, 2013·Physical Review Letters·Joost H Weijs, Detlef Lohse
Apr 20, 2013·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Vitaly B SvetovoyMiko C Elwenspoek
Aug 21, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Long Luo, Henry S White
Jan 31, 2014·Nature Communications·Qi LuFeng Jiao
Mar 4, 2014·Journal of the American Chemical Society·Matías H FactorovichDamián A Scherlis
Mar 27, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Qianjin ChenHenry S White
Apr 15, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Detlef Lohse, Xuehua Zhang
Aug 19, 2015·The Journal of Physical Chemistry Letters·Qianjin ChenHenry S White
Sep 1, 2015·Journal of the American Chemical Society·Qianjin ChenHenry S White
Nov 2, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Shantanu MaheshwariDetlef Lohse
Jan 28, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Yuwen LiuHenry S White
May 19, 2017·The Journal of Physical Chemistry Letters·Hang RenHenry S White
Sep 10, 2017·Journal of the American Chemical Society·Shuping LiXiaochun Zhou
Feb 24, 2018·Journal of the American Chemical Society·Sean R GermanHenry S White
Mar 24, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Qianjin Chen, Long Luo
May 23, 2018·Proceedings of the National Academy of Sciences of the United States of America·Rui HaoBo Zhang
Jun 1, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Álvaro Moreno SotoHenry S White
Mar 20, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Xu ZhaoLong Luo
Jun 14, 2019·Journal of the American Chemical Society·Yamila A Perez SirkinValeria Molinero

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Citations

Feb 13, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Yunqing MaXianren Zhang
Oct 28, 2020·The Analyst·Shizhong AnLong Luo
Jul 9, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Valery V Belousov, Sergey V Fedorov

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