2021
MXene-containing composite electrodes for hydrogen evolution: Material design aspects and approaches for electrode fabrication
SERGIIENKO, Sergii A.; Daniela V. LOPES; Gabriel CONSTANTINESCU; Marta C. FERRO; Nataliya D. SHCHAERBAN et al.Základní údaje
Originální název
MXene-containing composite electrodes for hydrogen evolution: Material design aspects and approaches for electrode fabrication
Autoři
SERGIIENKO, Sergii A.; Daniela V. LOPES; Gabriel CONSTANTINESCU; Marta C. FERRO; Nataliya D. SHCHAERBAN; Obid B. TURSUNOV; Viacheslav Igorevich SHKEPU; Hanna PAZNIAK; Nataliya Yu TABACHKOVA; Enrique RODRIGUEZ CASTELLON; Jorge R. FRADE a Andrei V. KOVALEVSKY
Vydání
International Journal of Hydrogen Energy, Elsevier Ltd. 2021, 0360-3199
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10405 Electrochemistry
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 7.139
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/21:00121443
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
MXene; Nickel; Hydrogen evolution; Electrocatalysts
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 22. 4. 2021 15:30, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
This work explores the possibilities for the processing of Ni- and Ti3C2Tx (T = OH, O) MXene-containing composite electrodes, by co-pressing and plastic deformation or by etching of the electrodes prepared directly by self-propagation high-temperature synthesis (SHS). Various material design approaches were also explored. In order to tune the Ti3C2 interlayer distance in Ti3C2Al MAX phase, an introduction of additional Al to form Ti3C2Alz materials with z > 1 was attempted. Self-propagation high-temperature synthesis of powder mixtures with extra Ni and Al content (e.g. Ni:Ti:Al:C = 1:2:3:1) resulted in SHS products containing Ti3C2Alz z > 1 material and Ni-Al alloys. Further etching of these products in 10M NaOH allowed the direct formation of electrodes with active surface containing Ti3C2Tx (T = OH, O) MXene- and Raney nickel-containing composites. The electrochemical studies were focused on hydrogen evolution and showed the potential for boosting the electrochemical reaction in Ni and MXene-containing composite electrodes, especially at high current densities. The guidelines for the processing of such electrodes under fluorine-free conditions are proposed and discussed.