In situ coating amorphous boride on ternary pyrite-type boron sulfide for highly efficient oxygen evolution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F21%3A73610290" target="_blank" >RIV/61989592:15640/21:73610290 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2021/TA/D0TA10633J" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/TA/D0TA10633J</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0ta10633j" target="_blank" >10.1039/d0ta10633j</a>

Jazyk výsledku

angličtina

Název v původním jazyce

In situ coating amorphous boride on ternary pyrite-type boron sulfide for highly efficient oxygen evolution

Popis výsledku v původním jazyce

Multimetallic pyrite-type sulfides have been promising electrocatalytic materials for the electrochemical oxygen evolution reaction (OER), but sulfides still require further improvement due to the easy oxidization of surface atoms and the intrinsically low activity. Herein, we synthesized the ternary pyrite-type boron sulfide in situ coated by amorphous FeCoNiBx as an efficient and durable heterogeneous catalyst for OER. The spherical aberration-corrected transmission electron microscopy clearly shows that the adjacent crystals exhibit different phases with an approximately 2 nm amorphous layer on the external surface of the catalysts. This hybrid catalyst exhibits the superior OER activity with an attractive overpotential of 419.4 mV vs. RHE at 100 mA cm(-2) in 1 M KOH solution and excellent stability over 10 h. Density functional theory calculations reveal that the B atoms can attract the electrons from metals, resulting in the expansion of the unoccupied d orbitals of metals, which is beneficial to attract the electrons from OH- groups, thus improving the OER performance of the catalyst combined with its special heterostructure. This study provides an advantageous method for engineering the electrical structure of pyrite-type sulfides for high OER activity and long durability.

Název v anglickém jazyce

In situ coating amorphous boride on ternary pyrite-type boron sulfide for highly efficient oxygen evolution

Popis výsledku anglicky

Multimetallic pyrite-type sulfides have been promising electrocatalytic materials for the electrochemical oxygen evolution reaction (OER), but sulfides still require further improvement due to the easy oxidization of surface atoms and the intrinsically low activity. Herein, we synthesized the ternary pyrite-type boron sulfide in situ coated by amorphous FeCoNiBx as an efficient and durable heterogeneous catalyst for OER. The spherical aberration-corrected transmission electron microscopy clearly shows that the adjacent crystals exhibit different phases with an approximately 2 nm amorphous layer on the external surface of the catalysts. This hybrid catalyst exhibits the superior OER activity with an attractive overpotential of 419.4 mV vs. RHE at 100 mA cm(-2) in 1 M KOH solution and excellent stability over 10 h. Density functional theory calculations reveal that the B atoms can attract the electrons from metals, resulting in the expansion of the unoccupied d orbitals of metals, which is beneficial to attract the electrons from OH- groups, thus improving the OER performance of the catalyst combined with its special heterostructure. This study provides an advantageous method for engineering the electrical structure of pyrite-type sulfides for high OER activity and long durability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

<a href="/cs/project/EF15_003%2F0000416" target="_blank" >EF15_003/0000416: Pokročilé hybridní nanostruktury pro aplikaci v obnovitelných zdrojích energie</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

12283-12290

Kód UT WoS článku

000651135600001

EID výsledku v databázi Scopus

2-s2.0-85106614126