Browsing by Subject "electrocatalysis"

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Access status: Open Access ,
2030 roadmap on two-dimensional materials for energy storage and conversion
(2026) Ding, Lan; Qi, Kezhen; Huang, Zimo; Yu, Ying; Yang, Ze; Tabibi, Sepehr; Khataee, Alireza; Hao, Lei; Zhang, Qitao; Popkov, Vadim; Kaneva, Maria; Lobinsky, Artem; Yu, Zhipeng; Li, Jun; Sultan, Amir; Zheng, Kun; Qu, Gan; Ma, Dandan; Shi, Jian-Wen; Ismail, Ahmed
Wydział Energetyki i Paliw
Two-dimensional (2D) materials have rapidly emerged as transformative platforms for energy storage and conversion, owing to their atomic-scale thickness, tunable electronic structures, and versatile chemical functionalities. Over the past five years, remarkable advances in material synthesis, interface engineering, and device integration have unlocked new opportunities, yet challenges in stability, scalability, and performance optimization remain. In this roadmap, we provide an updated perspective toward 2030, systematically reviewing eleven representative 2D material classes, which can be broadly grouped into carbon-based materials, inorganic semiconductors, framework materials, and layered nanosheet systems. Their opportunities and challenges in electrochemical energy storage, photocatalysis, and electrocatalysis are highlighted. We believe this roadmap can enrich the development of 2D materials for sustainable energy technologies, and provide useful guidance for both fundamental studies and practical applications in the coming decade.
Access status: Open Access ,
Electrodeposition of Cu-Cu2O composite films of adjustable band structure for photoelectrochemical conversion of carbon dioxide to hydrocarbons
(2024) Mech, Krzysztof; Podborska, Agnieszka; Marzec, Mateusz M.; Szaciłowski, Konrad; Ponce de Leon, Carlos
Akademickie Centrum Materiałów i Nanotechnologii
The electrodeposited $Cu-Cu_{2}O$ composite films were investigated in terms of their selectivity, efficiency, and stability in the electrochemical and photoelectrochemical conversion of $CO_{2}$ to hydrocarbons. Composite films were deposited at various potentials from an alkaline copper(II) lactate solution. The influence of electrode potential on the structure, morphology, and location of the valence and conduction bands was investigated. Finally, the catalytic activity of the materials was investigated in the dark and under illumination at various potentials in a $CO_{2}$-saturated $KHCO_{3}$ solution. Gas chromatography analysis indicated that maximum concentrations of $CH_{4}$ and $C_{2}H_{4}$ were observed under illumination and amounted to 13.37 and 8.99%, respectively. The highest Faradaic efficiencies for ethylene formation were observed at - 0.893 V vs. RHE, while for methane at - 0.893 V or 0.993 V, depending on the applied deposition potential. Performed studies indicated that at even relatively low conversion potentials, $Cu_{2}O$ may not be fully reduced to metallic copper and therefore affects the mechanism and kinetics of electrode reactions. Moreover, reported results indicated possibilities for controlling the selectivity toward the formation of hydrocarbons through proper selection of the composite synthesis conditions and conversion parameters as well.