Electrocatalytic trends of different Cantor entropy alloys for alkaline and acidic hydrogen-evolution reactions

Ljubec Božiček, Barbara (avtor), Arah, Bor (avtor), Kušter, Monika (avtor), Naglič, Iztok (avtor), Markoli, Boštjan (avtor), Ponikvar-Svet, Maja (avtor), Einfalt, Lara (avtor), Čeh, Miran (avtor), Alcantara Marinho, Belisa (avtor)

Medium- and high-entropy alloys (MEAs and HEAs) are the basis of unique electrocatalysts for hydrogen-evolution reactions (HERs) due to their tunable chemical compositions and microstructures. Here, various Cantor MEAs (CoFeNi, CoFeNiMn, CoFeNiCr) and a HEA (CoFeNiMnCr) made up of affordable non-noble transitional metals with different structures (primary matrix and secondary phases, grain sizes, lattice parameters) were successfully synthesized with an inert-gas melting process. A close correlation was established between their physicochemical properties (elemental composition, microstructure, crystal structure) and the hydrogen-binding ability of the elements in the alloy on the electrocatalytic HER activity and stability in alkaline and acidic media. Advanced performances of electrocatalysts toward HERs were revealed in a specially designed electrochemical cell. Effectively identifying these electrocatalytic trends lays the groundwork for the strategic design of multi-component alloy electrocatalysts for practical HERs.

• Jezik: Angleški jezik
• Ključne besede: water splitting, hydrogen-binding energy, medium-entropy alloys, high-entropy alloys, spillover effect
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 7 str.
• Številčenje: Vol. 41, art. 110876
• PID: 20.500.12556/RUL-164785
• UDK: 54
• ISSN pri članku: 2352-4928
• DOI: 10.1016/j.mtcomm.2024.110876
• COBISS.SI-ID: 214436867
• Datum objave v RUL: 12.11.2024

Gradivo je del revije

• Naslov: Materials today communications
• Založnik: Elsevier
• ISSN: 2352-4928
• COBISS.SI-ID: 19385622

Licence

• Licenca: CC BY-NC 4.0, Creative Commons Priznanje avtorstva-Nekomercialno 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc/4.0/deed.sl
• Opis: Licenca Creative Commons, ki prepoveduje komercialno uporabo, vendar uporabniki ne rabijo upravljati materialnih avtorskih pravic na izpeljanih delih z enako licenco.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: vodikova energija, cepitev vode, zlitine, entropija, elektrokataliza