J 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

EID Scopus

Klíčová slova anglicky

MXene; Nickel; Hydrogen evolution; Electrocatalysts

Štítky

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.