RT Journal Article
T1 In situ X-ray CT visualization of hydrogen bubbles inside the porous transport layer of a direct toluene electro-hydrogenation electrolyzer.
A1 Reyna-Peña, Fátima
A1 Atienza-Márquez, Antonio
A1 Sunpil, Jang
A1 Shiono, Ryuhei
A1 Shigemasa, Kaito
A1 Araki, Takuto
A1 Nagasawa, Kensaku
A1 Mitsushima, Shigenori
K1 Electroquímica
K1 Electrólisis
AB The organic hydride toluene/methylcyclohexane is an attractive hydrogen carrier. The direct electro-hydrogenation of toluene to methylcyclohexane has a higher energy efficiency compared to the conventional two-step method. Yet, there are factors inhibiting the toluene supply to the cathode reaction site and reducing the conversion rate to methylcyclohexane. Thus, hydrogen may be generated as a side reaction. Understanding how hydrogen bubbles are distributed is crucial regarding the design optimization of these electrochemical devices. This work presents, for the first time in a direct toluene electro-hydrogenation electrolyzer, the X-ray visualization of hydrogen bubbles inside the porous electrode. The concentration of bubbles was higher near the cathode catalyst and tended to increase with the electric current and operating time. Bubble distribution spreads across the active area when using flat field plates. As for rib-and-channel field plates, despite bubbles mostly concentrated beneath ribs, the total hydrogen accumulated inside the porous electrode could be reduced.
PB Elsevier
YR 2023
FD 2023-08-24
LK https://hdl.handle.net/10630/40344
UL https://hdl.handle.net/10630/40344
LA eng
NO Reyna-Peña, F.I. ,  Atienza-Márquez, A. , et al. In situ X-ray CT visualization of hydrogen bubbles inside the porous transport layer of a direct toluene electro-hydrogenation electrolyzer. International Journal of Hydrogen EnergyOpen source preview, 2024, 50, pp. 787–798
NO https://openpolicyfinder.jisc.ac.uk/id/publication/12573
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 13 abr 2026