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<title><string language="fre"><![CDATA[Carlos Sanchez - Electrolyte engineering for electrochemical CO2 reduction]]></string></title>
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<string language="fre"><![CDATA[Ionic liquids
(ILs) in electrocatalysis have attracted a lot of attention from the seminal work of Rosen et al. [1] where they achieved a
relevant overpotential decrease for CO2 reduction reaction (CO2RR)
on a silver electrode. Moreover, ILs have been proposed as organic promoters for
enhancing the catalytic activity by modifying the electrostatic properties at
the electrochemical interface. Then, electrolyte engineering has become a
powerful way to impact on the stability of reaction intermediates and control
reaction selectivity.
 
The role of
different ILs as simultaneous supporting electrolyte and co-catalyst in
acetonitrile for CO2 electroreduction in the presence of a model
molecular catalyst [Re(bpy)(CO)3Cl]
is presented here. [2] In particular, the nature of the cation, anion and
cation alkyl chain is varied by a choice of 5 different ILs, including
imidazolium and pyrrolidinium cations and their results are compared to
conventional benchmark supporting electrolyte. Under catalytic conditions an
overpotential diminution of 0.33 V
for CO2 to CO conversion is achieved in the presence of ILs. Finally,
a mechanistic explanation is provided to justify this behaviour.
[1] Rosen,
B.A.; Salehi-Khojin, A.; Thorson, M.R.; Zhu, W.; Whipple, D.T.; Kenis, P.J.A.;
Masel, R.I. Science 2011, 334 (6056), 643.
[2] Vichou,
E.; Xu-Li, Y.; Gomez-Mingot, M.; Fontecave, M.; Sánchez-Sánchez, C.M. J. Phys. Chem. C 2020, 124, 23764.]]></string></description>
<keyword><string language="fre"><![CDATA[Solar driven energy conversion]]></string></keyword><keyword><string language="fre"><![CDATA[Photoelectrochemical water splitting]]></string></keyword><keyword><string language="fre"><![CDATA[Green processes for H2 production]]></string></keyword>
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<date><dateTime>2021-06-15</dateTime></date>
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