Bismuth-Noble Metal Alloy Nanostructures Prepared by Colloidal Chemical Routes for Use in Hydrogen Evolution and Oxygen Reduction Electrocatalysis: Bi-Pt Versus Bi-Pd

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924189" target="_blank" >RIV/60461373:22310/22:43924189 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/adsu.202200163" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/adsu.202200163</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adsu.202200163" target="_blank" >10.1002/adsu.202200163</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bismuth-Noble Metal Alloy Nanostructures Prepared by Colloidal Chemical Routes for Use in Hydrogen Evolution and Oxygen Reduction Electrocatalysis: Bi-Pt Versus Bi-Pd

Popis výsledku v původním jazyce

Compositional and morphological tuning of bismuth-based nanomaterials is crucial to improve and broaden the application of such structures in a range of electrocatalytic reactions. Nanostructures composed of Pt-Bi and Pd-Bi alloys in different elemental proportions and shapes are produced by solvo-thermal and hydrothermal chemical routes at moderate temperatures. The alloying of cost-effective bismuth with platinum is found to be much more efficient than that with palladium for the boosting of the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR). Interestingly, Pt-rich Pt-Bi structures with irregular-shaped thin morphologies are more suitable for HER, whereas cubic-like Pt-Bi nanostructures prove to be better catalysts for the ORR. The higher mass activity of Pt-Bi alloys in ORR than that of pure Bi and Pd-Bi alloys as well as the low HER overpotentials, which are comparable with benchmark 10% Pt/C catalysts, are attributed to synergistic effects, due to the coexistence and satisfactory degree of alloying between both metals.

Název v anglickém jazyce

Bismuth-Noble Metal Alloy Nanostructures Prepared by Colloidal Chemical Routes for Use in Hydrogen Evolution and Oxygen Reduction Electrocatalysis: Bi-Pt Versus Bi-Pd

Popis výsledku anglicky

Compositional and morphological tuning of bismuth-based nanomaterials is crucial to improve and broaden the application of such structures in a range of electrocatalytic reactions. Nanostructures composed of Pt-Bi and Pd-Bi alloys in different elemental proportions and shapes are produced by solvo-thermal and hydrothermal chemical routes at moderate temperatures. The alloying of cost-effective bismuth with platinum is found to be much more efficient than that with palladium for the boosting of the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR). Interestingly, Pt-rich Pt-Bi structures with irregular-shaped thin morphologies are more suitable for HER, whereas cubic-like Pt-Bi nanostructures prove to be better catalysts for the ORR. The higher mass activity of Pt-Bi alloys in ORR than that of pure Bi and Pd-Bi alloys as well as the low HER overpotentials, which are comparable with benchmark 10% Pt/C catalysts, are attributed to synergistic effects, due to the coexistence and satisfactory degree of alloying between both metals.

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/LL2101" target="_blank" >LL2101: Příští Generace Monoelementárních 2D Materiálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Advanced Sustainable Systems

ISSN

2366-7486

e-ISSN

2366-7486

Svazek periodika

6

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

nestrankovano

Kód UT WoS článku

000828832600001

EID výsledku v databázi Scopus

2-s2.0-85134486540