Grain boundaries derived from layered Fe/Co di-hydroxide porous prickly-like nanosheets as potential electrocatalyst for efficient electrooxidation of hydrazine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F23%3A43970243" target="_blank" >RIV/49777513:23640/23:43970243 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi" target="_blank" >https://doi</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2023.158265" target="_blank" >10.1016/j.apsusc.2023.158265</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Grain boundaries derived from layered Fe/Co di-hydroxide porous prickly-like nanosheets as potential electrocatalyst for efficient electrooxidation of hydrazine

Popis výsledku v původním jazyce

Constructing a potentially stable and highly active nanostructured catalyst for hydrazine electro-oxidation is of substantial importance in direct-hydrazine fuel cells (DHFCs) application. In this work, we grow layered pricklylike Fe/Co di-hydroxide porous nanostructures as bifunctional catalysts on the surface of nickel mesh (Fe/Co/ NiMn D-HPNs) via controllable electroplating method for an efficient electrooxidation reaction of hydrazine. The layered prickly-like Fe/Co/NiMn D-HPNs samples are explored as potential catalysts for electrooxidation of hydrazine with the enhanced catalytic current response (32.4 mA cm???? 2), which is higher than the monohydroxide nanostructured electrodes (Fe@ D-HPNs and Co@ D-HPNs). The obtained higher catalytic activity is mainly attributed to layered prickly-like nanostructures with a large electroactive surface area (116.5 cm???? 2),Fe and Co elements that promoted synergetic effect, and the presence of grain-boundaries on the surface of prickly-like porous layers. The layered prickly-like Fe/Co/NiM30 D-HPNs catalyst displayed a low Tafel slope (67.4 mV dec???? 1) and longer stability of its original morphology of layered prickly-like porous nanostructures toward the electrooxidation of hydrazine even after &gt;10000 sec. Thus, the layered prickly-like Fe/Co/NiM30 DHPNs are considered as a potential and robust catalyst, and provide new insights in the construction of highlyactive and low-cost alternative non-noble nanostructured materials for DHFCs applications.

Název v anglickém jazyce

Grain boundaries derived from layered Fe/Co di-hydroxide porous prickly-like nanosheets as potential electrocatalyst for efficient electrooxidation of hydrazine

Popis výsledku anglicky

Constructing a potentially stable and highly active nanostructured catalyst for hydrazine electro-oxidation is of substantial importance in direct-hydrazine fuel cells (DHFCs) application. In this work, we grow layered pricklylike Fe/Co di-hydroxide porous nanostructures as bifunctional catalysts on the surface of nickel mesh (Fe/Co/ NiMn D-HPNs) via controllable electroplating method for an efficient electrooxidation reaction of hydrazine. The layered prickly-like Fe/Co/NiMn D-HPNs samples are explored as potential catalysts for electrooxidation of hydrazine with the enhanced catalytic current response (32.4 mA cm???? 2), which is higher than the monohydroxide nanostructured electrodes (Fe@ D-HPNs and Co@ D-HPNs). The obtained higher catalytic activity is mainly attributed to layered prickly-like nanostructures with a large electroactive surface area (116.5 cm???? 2),Fe and Co elements that promoted synergetic effect, and the presence of grain-boundaries on the surface of prickly-like porous layers. The layered prickly-like Fe/Co/NiM30 D-HPNs catalyst displayed a low Tafel slope (67.4 mV dec???? 1) and longer stability of its original morphology of layered prickly-like porous nanostructures toward the electrooxidation of hydrazine even after &gt;10000 sec. Thus, the layered prickly-like Fe/Co/NiM30 DHPNs are considered as a potential and robust catalyst, and provide new insights in the construction of highlyactive and low-cost alternative non-noble nanostructured materials for DHFCs applications.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

APPLIED SURFACE SCIENCE

ISSN

0169-4332

e-ISSN

1873-5584

Svazek periodika

639

Číslo periodika v rámci svazku

DEC 1 2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

001067120300001

EID výsledku v databázi Scopus

2-s2.0-85168557672