Research Achievements
Publications
Research Achievements
Publications
Where Jeju’s nature meets technology shaping
a sustainable future.
Jeju National University
Green Hydrogen Glocal Leading Research Center
TEL. 064-754-4446 ｜ E-MAIL. gh2rlrc@gmail.com
LOCATION. D208, Engineering Building 4, 102
Jejudaehak-ro, Jeju-si, Jeju Special Self-Governing Province, Jeju National University (Arail-dong)
Copyright ⓒ Jeju National University Green Hydrogen Glocal Leading Research Center. All right reserved.
 | Jeju National University Green Hydrogen Glocal Leading Research Center TEL. 064-754-4446 ｜ E-MAIL. gh2rlrc@gmail.com LOCATION. D208, Engineering Building 4, 102 Jejudaehak-ro, Jeju-si, Jeju Special Self-Governing Province, Jeju National University (Arail-dong), Republic of Korea |
Where Jeju’s nature meets technology shaping
a sustainable future.
Copyright ⓒ Jeju National University Green Hydrogen Glocal Leading Research Center. All right reserved.
Abstract
Developing affordable/efficient catalysts for electrolytic co-production of green hydrogen and value-added products is a prime interest. However, efficient electronic structure engineering of transition metal-based catalysts remains challenging. Herein, we develop high-valent capsule-like copper molybdate (c-CMO) via ultrasonication-assisted strategy. XPS, XANES, KPFM, and DFT studies suggest strong Mo-Cu interaction in c-CMO alters its electronic structure, reduces work function, and lowers ∆GH*. In HER, c-CMO/PNF electrode achieved 130 mV@10 mA/cm² with higher MA and TOF than CO/PNF and MO/PNF electrodes and superior methanol-tolerance than Pt/C. MOR investigations suggest c-CMO/PNF requires 1.39 V@10 mA/cm², 0.239 V lower than OER. Qualitative/quantitative 1H NMR confirms impressive HCOO− selectivity with ∼96 % Faradaic efficiency. The assembled hybrid AEM water-electrolyzer (HER+MOR) demonstrates 1 A/cm²@2 V (at 60 °C), outperforming HER+OER (2.25 V). The stability test of HAEMWE modeled/predicted using Time-Series-Analysis reveals statistically significant lags, indicating zero autocorrelation. This study emphasizes the development of efficient TMO based catalyst for HAEMWE.