alpha-Co(OH)(2) Thin-Layered Cactus-Like Nanostructures Wrapped Ni3S2 Nanowires: A Robust and Potential Catalyst for Electro-oxidation of Hydrazine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F21%3A43962526" target="_blank" >RIV/49777513:23640/21:43962526 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1002/celc.202100068" target="_blank" >https://doi.org/10.1002/celc.202100068</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/celc.202100068" target="_blank" >10.1002/celc.202100068</a>

Jazyk výsledku

angličtina

Název v původním jazyce

alpha-Co(OH)(2) Thin-Layered Cactus-Like Nanostructures Wrapped Ni3S2 Nanowires: A Robust and Potential Catalyst for Electro-oxidation of Hydrazine

Popis výsledku v původním jazyce

It is of significant urgency to fabricate highly active catalysts for electro-oxidation of hydrazine for application in direct hydrazine fuel cells (DHFCs). Thus, in this work we grow threedimensional (3-D) α-Co(OH)2 thin-layered cactus-like nanostructures (shell) on the surface of Ni3S2 nanowires (core) enveloped nickel (Ni) foam substrate. HRTEM images clearly reveal that the α-Co(OH)2 thin-layered cactus-like nanostructures (shell) are evenly surrounded on the surface of Ni3S2 nanowires (core). Notably, α-Co(OH)2/Ni3S2 thin-layered cactus-like nanowires modified Ni foam displays an enhanced electro-oxidation of hydrazine (340 mA current response and the onset oxidation potential of -1.10 V) than α-Co(OH)2 sponge-like, and Ni3S2 nanowire structures. The obtained enhanced electro-catalytic response is mainly due to its electron rich Ni active centers, larger electrochemically active surface area, higher electrical conductivity, and porous surface-structure formed by growing α-Co(OH)2 thin-layered cactus-like nanostructures on the Ni3S2 nanowires, henceforth increasing the inherent activity and the number of available active sites/spots. Further, the α-Co(OH)2/ Ni3S2 thin-layered cactus-like nanowire catalyst shows notablestability (stable for more than a week) towards electro-oxidation of hydrazine. Thus, as fabricated cactus-like thin-layered α- Co(OH)2/Ni3S2 core-shell nanowires catalyst can be considered as potential and robust catalyst for electro-oxidation of hydrazine.

Název v anglickém jazyce

alpha-Co(OH)(2) Thin-Layered Cactus-Like Nanostructures Wrapped Ni3S2 Nanowires: A Robust and Potential Catalyst for Electro-oxidation of Hydrazine

Popis výsledku anglicky

It is of significant urgency to fabricate highly active catalysts for electro-oxidation of hydrazine for application in direct hydrazine fuel cells (DHFCs). Thus, in this work we grow threedimensional (3-D) α-Co(OH)2 thin-layered cactus-like nanostructures (shell) on the surface of Ni3S2 nanowires (core) enveloped nickel (Ni) foam substrate. HRTEM images clearly reveal that the α-Co(OH)2 thin-layered cactus-like nanostructures (shell) are evenly surrounded on the surface of Ni3S2 nanowires (core). Notably, α-Co(OH)2/Ni3S2 thin-layered cactus-like nanowires modified Ni foam displays an enhanced electro-oxidation of hydrazine (340 mA current response and the onset oxidation potential of -1.10 V) than α-Co(OH)2 sponge-like, and Ni3S2 nanowire structures. The obtained enhanced electro-catalytic response is mainly due to its electron rich Ni active centers, larger electrochemically active surface area, higher electrical conductivity, and porous surface-structure formed by growing α-Co(OH)2 thin-layered cactus-like nanostructures on the Ni3S2 nanowires, henceforth increasing the inherent activity and the number of available active sites/spots. Further, the α-Co(OH)2/ Ni3S2 thin-layered cactus-like nanowire catalyst shows notablestability (stable for more than a week) towards electro-oxidation of hydrazine. Thus, as fabricated cactus-like thin-layered α- Co(OH)2/Ni3S2 core-shell nanowires catalyst can be considered as potential and robust catalyst for electro-oxidation of hydrazine.

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

2021

Kód důvěrnosti údajů

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

Název periodika

CHEMELECTROCHEM

ISSN

2196-0216

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

937-947

Kód UT WoS článku

000627423800020

EID výsledku v databázi Scopus

2-s2.0-85102379175