Highly exfoliated NiPS3 nanosheets as efficient electrocatalyst for high yield ammonia production

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924157" target="_blank" >RIV/60461373:22310/22:43924157 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1385894721042273" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894721042273</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2021.132649" target="_blank" >10.1016/j.cej.2021.132649</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Highly exfoliated NiPS3 nanosheets as efficient electrocatalyst for high yield ammonia production

Popis výsledku v původním jazyce

The development of electrocatalytic nitrogen reduction reaction (NRR) at ambient conditions as an alternative to traditional high-temperature ammonia synthesis is a vibrant research topic due to the potential to significantly reduce the energy consumption required for the production of ammonia. Several noble metal-based materials have already been identified as highly active electrocatalysts for this purpose. However, the development of nonprecious metal-based electrocatalysts is necessary for realizing cost-effective ammonia synthesis at large scales. This work has explored the potential of the less exploited transition metal phosphorus trichalcogenide NiPS3 as an NRR electrocatalyst. Excellent NRR activities have been achieved by exfoliating bulk NiPS3 into bi- or trT layered nanosheets. The NH3 yield attained using exfoliated NiPS3 is 118 mu g h(-1) mg(eat)(-1) with a Faraday efficiency of &gt; 17 % at an applied potential of -0.4 V vs RHE. The NRR performance of exfoliated NiPS3 in terms of NH3 yield surpasses many non-noble metal-based catalysts reported in the literature. Further, it also exhibited a stable NRR activity of &gt; 90% even after several repetitive cycles. Plane-wave DFT calculations at the GGA U level have been used to investigate the reaction pathways. It could be shown that the NNR follows an associative mechanism, with the very first hydrogenation step being the potential determining step.

Název v anglickém jazyce

Highly exfoliated NiPS3 nanosheets as efficient electrocatalyst for high yield ammonia production

Popis výsledku anglicky

The development of electrocatalytic nitrogen reduction reaction (NRR) at ambient conditions as an alternative to traditional high-temperature ammonia synthesis is a vibrant research topic due to the potential to significantly reduce the energy consumption required for the production of ammonia. Several noble metal-based materials have already been identified as highly active electrocatalysts for this purpose. However, the development of nonprecious metal-based electrocatalysts is necessary for realizing cost-effective ammonia synthesis at large scales. This work has explored the potential of the less exploited transition metal phosphorus trichalcogenide NiPS3 as an NRR electrocatalyst. Excellent NRR activities have been achieved by exfoliating bulk NiPS3 into bi- or trT layered nanosheets. The NH3 yield attained using exfoliated NiPS3 is 118 mu g h(-1) mg(eat)(-1) with a Faraday efficiency of &gt; 17 % at an applied potential of -0.4 V vs RHE. The NRR performance of exfoliated NiPS3 in terms of NH3 yield surpasses many non-noble metal-based catalysts reported in the literature. Further, it also exhibited a stable NRR activity of &gt; 90% even after several repetitive cycles. Plane-wave DFT calculations at the GGA U level have been used to investigate the reaction pathways. It could be shown that the NNR follows an associative mechanism, with the very first hydrogenation step being the potential determining step.

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

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

430

Číslo periodika v rámci svazku

15 February 2022

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

nestrankovano

Kód UT WoS článku

000730111800003

EID výsledku v databázi Scopus

2-s2.0-85116575543