PtSe2 on a reduced graphene oxide foil for the alkaline hydrogen evolution reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924115" target="_blank" >RIV/60461373:22310/22:43924115 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlehtml/2022/ma/d2ma00190j" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2022/ma/d2ma00190j</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d2ma00190j" target="_blank" >10.1039/d2ma00190j</a>

Jazyk výsledku

angličtina

Název v původním jazyce

PtSe2 on a reduced graphene oxide foil for the alkaline hydrogen evolution reaction

Popis výsledku v původním jazyce

Reducing energy consumption during the hydrogen evolution reaction (HER) in electrocatalytic water splitting for hydrogen production is still a challenge. Among the transition metal dichalcogenide family, platinum diselenide (PtSe2) exhibits good air stability, a low band-gap, and semimetallic properties, rendering it a promising catalyst for the HER. Herein, the selenization of predeposited Pt on a reduced graphene oxide (rGO) substrate forming an 88 +/- 6 nm PtSe2 thin layer results in a freestanding, efficient HER electrocatalyst yielding a competitive performance in an alkaline medium, achieving a low overpotential of 95 mV at -10 mA cm(-2). Furthermore, the PtSe2/rGO foil used in a two-electrode cell configuration demonstrates good long-term stability, up to 18 hours. The performance of the PtSe2/rGO foil results from the distribution of PtSe2 over the rGO substrate, which is maintained after the electrochemical reactions as attested by Raman mapping, and complemented by scanning electron microscopy, inductively coupled plasma optical emission spectrometry, and X-ray photoelectron spectroscopy characterization.

Název v anglickém jazyce

PtSe2 on a reduced graphene oxide foil for the alkaline hydrogen evolution reaction

Popis výsledku anglicky

Reducing energy consumption during the hydrogen evolution reaction (HER) in electrocatalytic water splitting for hydrogen production is still a challenge. Among the transition metal dichalcogenide family, platinum diselenide (PtSe2) exhibits good air stability, a low band-gap, and semimetallic properties, rendering it a promising catalyst for the HER. Herein, the selenization of predeposited Pt on a reduced graphene oxide (rGO) substrate forming an 88 +/- 6 nm PtSe2 thin layer results in a freestanding, efficient HER electrocatalyst yielding a competitive performance in an alkaline medium, achieving a low overpotential of 95 mV at -10 mA cm(-2). Furthermore, the PtSe2/rGO foil used in a two-electrode cell configuration demonstrates good long-term stability, up to 18 hours. The performance of the PtSe2/rGO foil results from the distribution of PtSe2 over the rGO substrate, which is maintained after the electrochemical reactions as attested by Raman mapping, and complemented by scanning electron microscopy, inductively coupled plasma optical emission spectrometry, and X-ray photoelectron spectroscopy characterization.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/GC20-16124J" target="_blank" >GC20-16124J: Dvojdimenzionální vrstevnaté dichalkogenidy přechodných kovů / nanostrukturované uhlíkové kompozity pro aplikace na elektrochemické uchovávání energie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Advances

ISSN

2633-5409

e-ISSN

2633-5409

Svazek periodika

3

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

4348-4358

Kód UT WoS článku

000787900200001

EID výsledku v databázi Scopus

2-s2.0-85129917898